Latest news of science and technology, new electronics

A regularly updated selection of the most interesting news in science and technology, new electronics. Large archive of articles from 2000 to 2024. Based on materials from periodicals and the Internet.

timeline

Burglar alarm for laptop 21.05.2005

The Korean corporation "David & Chris" has patented an "anti-theft device" for portable computers. If you are afraid that the laptop might be stolen while you leave it on the table in the library, for example, go to the bookshelves, you can turn on the alarm - and if you try to take the computer away, the motion sensor based on the accelerometer will turn on the siren. Only the owner can turn it off by entering a password known to him from the keyboard. ... >>

The nurses will scrub the copper 19.05.2005

Staphylococcus aureus, resistant to antibiotics, was bred by the efforts of doctors and patients who used antibiotics where needed and not needed. It occurs on the skin and on the mucous membrane of the nasal cavity in about a third of healthy people and does not harm them in any way. But in a body weakened by disease, staphylococci can multiply, causing persistent infections of the skin, bones, lungs, or blood poisoning. According to English statistics, this happens in almost 10% of hospital patients, and the number of deaths in England has increased 1995 times since 15. If we take all cases of staphylococcal infections, including those that ended safely, then their number increased from 210 to 5309. Bill Keevil, a professor at the University of Southampton, who studies the antiseptic properties of copper, suggests replacing stainless steel in hospitals with copper alloys that are toxic to microbes. Stainless steel is considered the most hygienic and antiseptic material for medical instruments, furniture, plumbing and clinic fittings. ... >>

sea ​​sheep 17.05.2005

Sheep are known to eat grass. However, on the islet of North Ronaldsay (Orkney Islands) in Scotland, since the middle of the 5000th century, sheep have been accustomed to feed on seaweed thrown ashore by the surf. The owners of the meager meadows and pastures on the island did not want to waste the grass required for horses on sheep. French biologists have studied the composition of the tooth enamel of sheep that lived on the Orkney Islands XNUMX years ago, when animal husbandry first appeared in these parts. It turned out that even then the sheep ate sea plants. Apparently, this is why the direct descendants of the Orkney sheep were relatively easy to reorient to the marine diet. ... >>

Libyan desert craters 16.05.2005

While testing radars designed for robotic probes to be launched to Mars and Venus, French researchers have been airborne surveying the Libyan desert in western Egypt and found unusual ring structures under the sand. It turned out to be the largest meteorite field known so far in the world. About 50 million years ago, numerous large meteorites fell here, disintegrating as they passed through the atmosphere. Over an area of ​​more than 5000 square kilometers, a hundred craters with a diameter of 500 to 2000 meters were counted. Some of them are hidden under a thick layer of sand, but some are visible on the surface. In 2004, a team of scientists began to map the area accurately. It may be possible to find fragments of meteorites. ... >>

Golden treasure in the valley of roses 14.05.2005

Bulgarian archaeologists have unearthed a tomb belonging to the Thracian kingdom in the Valley of Roses near Kazanlak. Under six stone blocks weighing two tons each, many works of art were found, the most valuable of which is the golden mask of the Thracian king. It is believed that this is Seut III, who ruled in 330-313 BC. The weight of the mask is 650 grams. Precious figurines of Hercules, Priapus and Bacchantes were also found. In this area, the cradle of the Thracian culture that gave the world Orpheus and Spartacus, dozens of burials are known, and not all of them have been excavated. ... >>

ultrasonic microphone 12.05.2005

Israeli engineers Yaharon Mayer and Boris Decovich patented a microphone without moving parts. Since the sound does not have to swing the membrane in this system, the microphone picks up much weaker sounds than conventional models. It consists of a tube, at one end of which an ultrasound generator is installed, at the other - its detector. On the way, ultrasonic vibrations pass by a hole in the wall of the tube, through which sounds from the outside enter it. Adding up with ultrasound, they generate beats. An electronic circuit compares these beats with the original ultrasound of a known frequency and reconstructs the incoming sound. ... >>

Beware the bridge 10.05.2005

According to road statistics, every day in England, five buses or trucks crash with their roofs into a too low bridge over the road or into the arch of the entrance to the tunnel. There are also human casualties, and many hours of traffic jam in each such case is guaranteed. The British company Bridge Clear has developed a system that warns the driver with an audible signal that he is approaching a bridge that is too low. The system is based on a satellite navigation device, which contains a map of the road indicating the height of all obstacles encountered above the road. The device also remembers the height of the van or bus itself. ... >>

Diamond tool in the stone age 08.05.2005

American physicist Peter Liu, studying the composition of four stone axes found in ancient Chinese burials near Shanghai, found that they are composed mainly of corundum. This is the second hardest natural mineral (after diamond), meanwhile, the axes, whose age archaeologists estimate at 4500-6000 years, are polished to a mirror shine. Until now, it was believed that the ancient inhabitants of China used quartz sand for grinding, but quartz is too soft compared to corundum. Taking the same rock, Liu tried to grind it on a modern grinding machine using three common abrasive powders - quartz, corundum and diamond. It was possible to obtain a surface of such purity as on Stone Age axes only with the help of diamond powder. By the way, about 300 kilometers from the place of discovery, two diamond placers are known. ... >>

The neck is the weak point of a football player 07.05.2005

Sports doctors from Ankara (Turkey) examined the cervical vertebrae of football players and people of the same age who do not play football on x-rays. Result: leather ball knights have a cervical spine that looks 10-20 years older than non-football players. According to the authors of the study, the reason is that players often take the ball on their heads, and the impact force at the same time reaches 200 kilograms. ... >>

Printed scheme from under the chicken 05.05.2005

Another option was found for using chicken feathers, which are left in large quantities by chicken producers. At the suggestion of specialists from the University of Delaware (USA), their main component, keratin, is isolated from feathers, and then boards for electronic printed circuits are pressed from it. The keratin base is not only strong, light and degrades quickly in a landfill without polluting the environment, but also has special electrical properties, which allows new printed circuits to work faster than conventional ones made on getinaks. The well-known computer firm "Intel" became interested in the invention. ... >>

Wind turbines affect the climate 03.05.2005

It is well known that the hydroelectric reservoir changes the climate in the surrounding area, and the thermal power plant, emitting carbon dioxide, affects the global climate. But now there is evidence that large wind farms, consisting of hundreds of windmills, can have a small but real impact on the climate of the surrounding area. The height of modern wind turbines is up to 100 meters, the blade span is up to 50 meters, and even larger installations are being designed. Computer simulations conducted at Duke University (USA) showed that large groups of windmills can increase wind speed near the ground by an average of 0,6 meters per second and increase air temperature by 0,7 degrees Celsius. At the same time, the evaporation of moisture from the soil will increase around the wind power plant by 0,3 millimeters per day. All these data are averaged over 24 hours, and in the early morning the changes will be greater: the wind speed will increase by 1,5 meters per second in a few hours, and the temperature will increase by 2 degrees Celsius. The total capacity of the power plant out of 44 ... >>

Decaffeinated coffee has grown 01.05.2005

Brazilian botanists led by Paulo Mazzafer discovered in Ethiopia a variety of wild coffee tree, the berries of which contain only 0,76 milligrams of caffeine per gram of dry weight, which is 16 times less than in the usual Arabica variety. The leaves of these plants lack one enzyme that is involved in the production of caffeine. There are also similar trees in Madagascar, but the coffee from them turns out to be tasteless. Demand for decaffeinated coffee now accounts for one-tenth of the world's total coffee demand, and the caffeine is removed from regular varieties with chemical solvents, which alter the taste and aroma of the drink. It is believed that by crossing wild animals with cultivated plants, it will be possible to develop a variety that has almost no caffeine, but retains all other properties. It may hit the market in five years. ... >>

New Series of Thick Film Power Resistors 30.04.2005

VISHAY INTERTECHNOLOGY has released a series of thick-film power resistors with a power of 30, 50 and 100 W in standard transistor TO-220 and TO-247. The resistors have a silicon package that can be mounted directly on metal heatsinks. Resistor ratings from 0,015 Ohm to 1 MΩ. ... >>

DVD-R high density disc 29.04.2005

The development team, which includes Toshiba, announced the successful completion of the development of a high-density DVD-R disc - up to 15 GB per layer. A feature of the disc is that it can be produced on serial equipment for DVD-R discs. To read the information, a blue laser with a wavelength of 450 nm is used. ... >>

TEKTRONIX TDS6154C - the world's widest bandwidth oscilloscope 28.04.2005

TEKTRONIX's TDS6000 series digital oscilloscope family has released the world's widest bandwidth oscilloscope, TDS6154C, with a bandwidth of up to 15 GHz. In a survey conducted by EE Times magazine, this series of oscilloscopes was ranked first in the world for its technical parameters. ... >>

New frequency synthesizer chip CDCM7005 27.04.2005

The new CDCM7005 frequency synthesizer IC from TEXAS INSTRUMENTS has a jitter removal system that allows you to get a very clean signal. Phase noise is only -219 dB/Hz. Synthesizer frequency range up to 2,2 GHz. The microcircuit operates with a supply voltage of 3,3 V in the temperature range from -40 to + 85C. Available in BGA-64 and QFN-48 packages. ... >>

Chips P5CT072 for passports on plastic cards 26.04.2005

PHILIPS SEMICONDUCTOR Corporation has mastered the production of P5CT072 chips for passports on plastic cards. With a large amount of EEPRQM memory (72 Kbytes), the microcircuit can store large amounts of various information (digital photographs, images of the iris, fingerprints). The parameters of the microcircuit exceed the requirements of the Civil Aviation Organization (ICAQ). A high level of information security is also provided. ... >>

New miniature chips for battery maintenance 26.04.2005

NATIONAL SEMICONDUCTOR has introduced new miniature microcircuits for battery maintenance. The LP3947 lithium-ion battery charger IC charges from the mains adapter. The LP3655 microcircuit protects microcircuits from voltage and current overloads, monitors the battery status. LP3947 is available in a miniature LPP-16 package with dimensions of 4x4 mm, LP3655 is available in a SMD-25 package with dimensions of only 2,5x2,5 mm. ... >>

Analog to Digital Converter LTC2255 25.04.2005

Analog-to-digital converter LTC2255 from LINEAR TECHNOLOGY has 14 digits, high conversion rate up to 125 megasamples per second, low supply voltage (from 2,85 to 3,4 V). This ADC does not skip codes. It has a flexible input voltage range: from 1 to 2 V (peak-peak). Produced in a QFN-32 package with a size of 5x5 mm. ... >>

New Intel Celeron D351 processor 24.04.2005

The new Intel Celeron D351 processor has 64-bit addressable memory, making it possible to expand the 64-bit physical and virtual memory that is currently needed in digital media applications. The processor is produced using 90-nm technology in the LGA755 package. The processor has a bus of 533 MHz and a speed of up to 3,2 GHz. ... >>

16-bit microcontroller of the HCS12X family 23.04.2005

FREESCALE SEMICONDUCTOR has launched a new 16-bit microcontroller of the HCS12X family. The microcircuit has a high clock frequency (40 MHz), but its main difference is that the microcontroller processes interrupts without interfering with the central processor. The microcontroller software includes 172 instructions for improved memory access and 32-bit calculations. ... >>

PM6690 High Speed ​​Counter Timer Frequency Analyzer 22.04.2005

FLUKE Corporation introduced the PM6690 High Speed ​​Counter/Timer/Analyzer. In the counting mode, the device can operate at frequencies up to 8 GHz, has a resolution of up to 12 digits. There is an internal memory that can store up to 750000 measurement results. There is an interface for connecting to a personal computer. The device has a graphical display for presenting data in the form of a bar graph. ... >>

Three Port Video Switch FSAV433 21.04.2005

FAIRCHILD SEMICONDUCTOR introduced the industry's first three-port video switch, the FSAV433. It optimizes operations for a liquid crystal display that requires high-speed switching of either color or color difference signals. The switch has a frequency band of up to 550 MHz, low phase distortion (up to 0,1), low resistance (not higher than 6,5 Ohm), very low current consumption (less than 1 μA). The microcircuit is produced in the TSSQP-20 package. ... >>

New series of tantalum capacitors 20.04.2005

EPCOS is developing a new series of tantalum capacitors based on multi-anode technology with a polymer coating - TOPcap (Tantalum Organic Polymer Capacitors). Main advantages: low value of equivalent series resistance - units of mΩ, high specific capacitance, stability, low aging effects. This allows you to significantly reduce the number of capacitors on the board, for example, in DC/DC converter circuits for mobile devices. Voltages from 2,5 to 16 V, capacitances from 33 to 1500 uF, temperatures up to 105 degrees. ... >>

Epson AcuLaser 2600 Printer 19.04.2005

EPSON has launched the Epson AcuLaser 2600 printer, which works in both black and white and color modes, and in black and white it prints up to 30 pages per minute, and in color - up to 7,5 pages per minute. It is possible to install 4 monochrome cartridges at once, thereby increasing the volume of printing. The printer can print up to 120000 monochrome pages per month. ... >>

MAX9701 - Class D Audio Power Amplifier 18.04.2005

The DALLAS SEMICONDUCTOR-MAXIM MAX9701 is a Class D audio power amplifier. It delivers up to 1,3W into 8 ohms and is up to 87% efficient. A feature of the new microcircuit is a patented modulation method, due to which electromagnetic radiation is drastically reduced. The microcircuit operates in the supply voltage range from 2,5 to 5,5 V and is available in QFN-EP-24 and TSSOP-20 packages. Designed for portable applications (cell phones, players, laptops, etc.). ... >>

New Model Spectrum Analyzer 17.04.2005

B&K PRECISION introduced the Model 2658 spectrum analyzer, which has a frequency range up to 8,5 GHz and fits in the hand. The features of the device include: power measurement in the main and side channels, measurement of electric and magnetic fields, measurement by markers, search for maxima, auto-tuning, printout of screen data, etc. ... >>

New family of ATA542x transceiver chips on a single chip 16.04.2005

ATMEL CORPORATION presents a new family of ATA542x transceiver chips on a single chip for receiving and transmitting signals in the 315/345/433/868/915 MHz bands. The microcircuits do not require external filters and external switches. Achieved downsizing due to fewer passive components. Chips consume 10 mA in receive mode and 15 to 20 mA in transmit mode. The speed of receiving and transmitting data is up to 40 kbps. There is an SPI port through which the microcircuit is programmed. ... >>

Triple Differential Receiver AD814 15.04.2005

ANALOG DEVICES introduced the AD8143 Triple Differential Receiver, a compact, single-chip solution for receiving differential signals over twisted pairs up to 10 V and outputting a unipolar signal. The chip is designed to accept a tri-color RGB (red, green, blue) signal with a resolution of up to 1600x1200 or less. The AD8143 is paired with the AD8133 Triple Differential Signal Amplifier for twisted-pair signaling. The microcircuit is produced in the LFCSP-32 package with dimensions of 5x5 mm. ... >>

New data digitizers 14.04.2005

AGILENT TECHNOLOGIES announces 40 MHz digitizer with 14 bit resolution and 78 dB dynamic range for use in 6,7 band spectrum analyzers; 13,2 and 26,5 GHz. The study of the envelope spectrum of signals at these frequencies is necessary in applications such as radar, satellite communications, 3G wireless systems, and military applications. ... >>

In 2007 the Russians will be in control 13.04.2005

The government has approved an action plan for the introduction in Russia of passport and visa documents containing biometric information. All technological solutions must be introduced by the end of 2006. These measures will help counteract crime and, in particular, terrorism. The creation of a state system for the production, execution and control of new generation documents was entrusted to the Ministry of Information and Communications, as well as to all interested federal executive bodies. It is planned to introduce all technological solutions by the end of 2006. That is, by the time when passports with biometric information are introduced in Europe, the production and issuance of foreign passports and visa documents of a new type should begin throughout Russia. As noted, the project to introduce a new generation of foreign passports is aimed at ensuring the possibility of Russian citizens traveling abroad, as well as counteracting terrorist organizations. It is especially emphasized that ... >>

Organic conductor sensor 12.04.2005

Swedish scientists have come up with cheap humidity sensors made from an organic conductor. Polymer transistors, like light-emitting diodes or batteries, have a huge advantage over silicon chips: they can be printed with an inkjet printer, and by no means in an expensive clean room. PhD student David Nilsson from Linköping University (Sweden) came up with a humidity sensor based on them. According to his idea, water molecules affect the conductivity of the polymer, which inevitably affects the behavior of the polymer transistor. And the battery that is needed for the operation of the device, and the sensor, and the display that reflects the readings, the scientist suggests printing on the same piece of paper. "In a similar way, you can make sensors for the acidity of solutions or blood sugar meters," says David Nilsson. However, the most interesting application of polymer transistors is flexible displays: if you apply an electrical signal to each pixel, you can, by changing the ... >>

Internal points 11.04.2005

Replacing a clouded lens with an artificial plastic cataract has been practiced for a long time, and now American oculists have proposed correcting myopia with a lens added to the lens. A lens made of a transparent material based on collagen (a natural substance of connective tissue) is inserted under local anesthesia through an incision in the cornea. Since the material of the lens is soft, before insertion it rolls up into a tube, is easily inserted through a three-millimeter incision, and in place, in front of the lens, it unfolds itself. Tests over three years showed that 95 percent of those operated on improved their vision dramatically, and 60 percent became perfect. The number of dissatisfied with the results of the operation was less than one percent. ... >>

Car for the elderly 10.04.2005

Since life expectancy in Japan is one of the highest in the world, Japanese society is aging. Therefore, the automobile firm "Nissan" intends to produce a special car for the elderly and disabled. The chairs in it are made swivel to facilitate exit and landing. When the trunk is opened, a miniature crane rises from there to help unload suitcases or a folding wheelchair. And Toyota presented at an exhibition in Tokyo a car seat that slides out of the passenger compartment and turns into a wheelchair. ... >>

Build buildings like hornets 09.04.2005

Employees of the Swiss Institute of Materials Science believe that when designing and building residential buildings, it is necessary to take into account the experience of hornets. These large wasps build light but strong nests with excellent thermoregulation from thin wood shavings, planed with sharp jaws and held together with saliva. In the nest, until late autumn, the temperature is maintained at 29 degrees Celsius, which is necessary for breeding juveniles. And in the summer heat, the nest remains cool. In the walls of the nest there are air chambers that conduct heat poorly. The hygroscopic material of the walls accumulates water on cool, humid nights, and evaporates it on a hot day, cooling the nest. By creating such materials for building houses, a person could save a lot of energy used to heat and cool homes. ... >>

Breathing gets harder 09.04.2005

Stations scattered around the world that measure carbon dioxide in the air, for the second year in a row, have noted an unusually large increase in this indicator: more than three parts per million parts of air per year. The oldest such station has been operating in the Hawaiian Islands since 1958, and such cases of sustained growth have not yet been observed. The increase for the year ranged from 0,8 to one and a half parts per million. True, in some years there were two and almost three parts per million, but this happened during the El Niño years - the activation of warm currents in the ocean. Warm water can hold fewer gases in solution than cold water. But in recent years there have been no strong El Niños. Perhaps, say some ecologists, the ability of the biosphere to absorb carbon dioxide emitted by burning fuel has been exhausted. Too many forests have been cut down. If this is so, then we are waiting for a rapid, by historical standards, and a radical change in the Earth's climate. According to another theory, excess carbon dioxide is released into the air ... >>

Tennis racket electronic shock absorber 08.04.2005

Approximately six out of every ten professional or amateur tennis players suffer from what is known as "tennis elbow" or, scientifically, lateral epicondylitis. This is a painful inflammation of one of the ligaments of the elbow joint due to the vibration that occurs when the ball hits the racket and is transmitted through the handle to the elbow. Due to sensitive pains, sometimes you have to quit the game for a while. The Austrian firm HEAD, which specializes in tennis rackets, has released a model with electronic damping of harmful vibrations. There are four piezoelectric sensors in the frame of the racket. They perceive the vibrations from the impact of the ball and send signals to the handle, where the microcomputer is hidden. He analyzes the vibrations and sends the same rackets to the handle, but opposite in phase. The vibrations cancel each other out. Tests conducted on 82 players aged 24 to 66 showed that 91 percent of those who suffered from acute pain in the elbow stopped pain and improved. Piezoelectric ... >>

Radiofied football players 07.04.2005

David Evans, a student at the University of Northumbria (England), intends to radio football players. He designed a T-shirt with electronic sensors that constantly measure heart rate and perspiration. A miniature radio transmitter, sewn into the shirt, sends the measurement data to the laptops of doctors and trainers who sit at the edge of the field. If the information received worries the specialists, they can ask the player to come to the coaches' bench - the signal sent from the laptop will make the sleeve of the T-shirt vibrate. The electronics used in the T-shirt are not afraid of washing. The inventor hopes that in the 2006 World Cup competitions the English team will already be playing in his jerseys. Going forward, Evans intends to build a pressure sensor into his boots to determine whether the pitch is playable on the go. ... >>

Movie Chest 06.04.2005

The American company "Kaleidescape" offers a system for storing favorite movies on computer hard drives. This is a small chest that stores up to 180 full-length pictures with image and sound quality equivalent to DVD (the owner of the system overwrites the information in the storage from DVD discs). If there are several TVs in the house (up to seven), you can simultaneously broadcast from the box to them as many different movies. As the video library grows, the movie buff can add new hard drives to the box, increasing the storage capacity to 500 movies. ... >>

Gravity and earthquake 06.04.2005

Using supersensitive gravimeters, Japanese scientists from the University of Tokyo found that after an earthquake, the force of gravity at its epicenter changes. For example, in the Tokachi region on the island of Hokkaido, where an earthquake of magnitude 8 occurred in September 2003, gravity increased by one part in a billion. This is explained by two reasons: the shift of the tectonic plates changed the distribution of masses inside the Earth, and the terrain dropped a little, becoming a little closer to the center of the planet. ... >>

Radio in hours 05.04.2005

Monaco-based ITT has launched a watch with a built-in walkie-talkie on the market. The radio operates on 22 channels in the range of 446 megahertz, in urban conditions the range is 200-300 meters, in an open field - up to 2,5 kilometers. These watches are sold in pairs for about a hundred euros. ... >>

Temple air is dangerous to health 05.04.2005

An air pollution study conducted in two churches in Maastricht, Holland, showed that spending an hour in a temple, breathing candle smoke and church incense, is 20 times more harmful than standing on the side of an autobahn with heavy traffic for an hour. The content of particles in the air with a size of 10 micrometers or less, penetrating deeply into the lungs, and from there into the blood, even before the start of the service, was 3-5 times higher than on the side of a busy highway. After nine hours of service, which is typical for Sundays, hazardous particles that cause emphysema, heart failure and cancer have exceeded the dangerous limit of one milligram per cubic meter of air set by European health standards. In addition to soot particles, high levels of carcinogenic polycyclic aromatic hydrocarbons and free radicals were found in the air of temples. ... >>

You don't need a white screen for a movie 04.04.2005

Graduate students at the University of Weimar in Germany have created a computer projector that can display movies and TV shows on any surface without the need for a white screen. Uneven walls of any color, walls with wallpaper, and even a wall occupied by bookshelves are fine. The system consists of a computer, a video camera and a multimedia projector. Before the demonstration begins, the projector throws a test chart with lines and geometric shapes in different colors onto the wall. The camcorder sends the visible image to the computer, where it is compared with the original table, and the original is distorted so that the wall, regardless of its color and relief, produces an even image of the correct colors. After that, the same distortions are introduced into the movie shown by the projector. The quality is a little worse than on a flat white screen. ... >>

You can follow the growth of mountains by the leaves of plants 04.04.2005

Geologists have long understood how mountains grow: either due to volcanic activity, when lava pours out of the bowels, or due to folding, when two continental plates collide. But how to measure the speed at which mountains grew? American geologist Jennifer McIlwain drew attention to a pattern known to botanists: the lower the carbon dioxide content in the air, the more microscopic holes on the leaves of plants - stomata, through which the plant absorbs this gas. And the carbon dioxide content decreases with height. Having calculated the density of stomata placement on the leaves of modern plants from different heights, the researcher revealed a correlation between these factors. The leaves of the Californian black oak, which grows at altitudes from 60 to 2440 meters above sea level, were used to calibrate the altitude scale. To determine the growth rate of mountains, stomata are counted on leaf fossils preserved in different rock strata. This ... >>

Household gas outlet 03.04.2005

Natural gas could be used not only in the kitchen, if it was distributed throughout the apartment as conveniently as electricity through sockets. Such a system was developed by the German company Mertik Maxitrol. Gas pipes are laid in the walls of the apartment or cottage, and in each room, on the balcony, on the terrace there is a socket into which the plug of any gas appliance is inserted - a barbecue grill, a clothes dryer, a gas heater. The design of the outlet guarantees the supply of gas only if the device is connected to it. In addition, the gas supply is turned off if its flow through the outlet increases greatly or if the connection temperature exceeds 90 degrees Celsius. ... >>

Non-alcoholic beer is good for the heart 02.04.2005

Beer that has had the alcohol removed appears to be good for heart patients. A study conducted at the Wiesbaden Clinic (Germany) showed that non-alcoholic beer reduces blood clotting. The participants in the experiment were divided into three groups: one was given three liters of regular beer, the other - non-alcoholic, and the third group drank a four percent solution of ethyl alcohol in water. It was necessary to drink these three liters in three hours. Those who drank non-alcoholic beer had reduced blood levels of the enzyme thrombin, which causes platelets to stick together and cause blood to clot. Ordinary beer and a weak solution of alcohol, on the contrary, increased clotting. The researchers believe that non-alcoholic beer may be able to partially replace the drugs that reduce blood clotting, which are prescribed to patients recovering from a heart attack. Which component of beer acts this way is not yet clear. ... >>

Bicycle anti-theft system 01.04.2005

The American company "Sci-Jack" proposes to embed an anti-theft system in the tubular frame of a bicycle, which is a transceiver with a unique number assigned to it. If the bike is stolen, the owner must call the police, and special transmitters start broadcasting the number of the stolen bike. Its anti-theft system responds by sending its own signal, which is easy to find. During the ride, the anti-theft battery is constantly powered by a bicycle speaker. ... >>

Radar sports speedometer from TI 31.03.2005

TEXAS INSTRUMENTS has released a radar sports speedometer, which also combines an electronic watch and a heart rate monitor. The instrument is based on the digital signal processor MSP430F412. It calculates speed, distance, average speed, determines the pulse and displays the data on the display. ... >>

First multi-standard interface for 90nm disk drivers 30.03.2005

ST MICROELECTRONICS introduces the first multi-standard 90nm interface for disk drivers. The device allows driver manufacturers to reduce costs by using only one interface chip. The microcircuit has various additional functions (frequency synthesizer with low jitter, etc.). ... >>

New S5H1406 Chip for Digital TV Receiver 30.03.2005

SAMSUNG ELECTRONICS announced the completion of the development of a new chip S5H1406 for digital television receiver. The chip allows you to receive digital television signals both from the antenna and via cable. The chip processes signals with a high level of noise, with multipath propagation. ... >>

Chip TDA15600 to control the LCD TV screen 29.03.2005

PHILIPS SEMICONDUCTOR released the TDA15600 chip for controlling the LCD screen of serial TVs. The chip processes color signals in NTSC, PAL, SECAM systems, processes audio signals in a 24-bit digital signal processor, can work with PC monitors, supporting SXGA and WXGA formats, teletext up to 100 pages and other features. ... >>

Bluetooth car communication device 28.03.2005

IHF1000 block from MOTOROLA INC. is an in-vehicle Bluetooth wireless communication device. The device receives external calls for a mobile phone, can connect to the owner's headset, which turns out to be hands-free, and can record in memory, stores up to 20 phone numbers in memory and can dial the number by the owner's voice (recognizes the owner's request in 5 languages). Up to four mobile phones of people traveling in a car can be connected to the device. ... >>

The world's first Ethernet system controller type ENC28J60 27.03.2005

MICROCHIP TECHNOLOGY has launched the world's first ENC28J60 Ethernet system controller, which is an efficient remote communication solution. Previous controllers were bulky and came in packages with more than 80 pins. The ENC28J60 is available in a 28-pin package and has an output to the industry standard SPI serial interface, which requires only four wires to communicate with the server controller. ... >>

Linear Voltage Regulator LT3021 26.03.2005

LINEAR TECHNOLOGY has launched the production of a linear voltage regulator LT3021 with a very low voltage drop across the regulator (only 160 mV). Voltage regulation range from 0,9 to 10 V, output current from 0 to 500 mA. There is protection against overcurrent, from the reverse inclusion of the battery, from overheating. The microcircuit is available in DFN-16 packages (5x5 mm in size) and in SO-8. ... >>

Chips EL4342 and EL4340 for video multiplexers 25.03.2005

INTERSIL announced the release of ICs for EL4342 and EL4340 video multiplexers with switching frequency up to 500 MHz (the fastest in the world), which allows supporting UXGA resolution and HDTV. The microcircuits have a fixed gain of 1 and are available in miniature 5x5 mm QFN-32 packages. ... >>

New synchronous boost converter chipsets 24.03.2005

INTERNATIONAL RECTIFIER has announced two new DirectFET synchronous boost converter chipsets. The first chipset consists of IRF6617 (control) and IRF6611 (synchronous FET) chips and is designed for operating voltages up to 30 V and operating current up to 20 A. The second pair consists of IRF6637 (control) and IRF6678 (synchronous FET) chips and is designed for even higher operating currents. It is noted that the devices are produced using lead-free technology. ... >>

Dual core processors 23.03.2005

Intel Corporation announced the beginning of the era of dual-core processors. The first processors in this series are the Intel Pentium Processor Extreme Edition 840 at 3,2 GHz and the Intel 955X Express Chipset. This platform benefits users in the areas of high-definition television, high-quality sound and XNUMXD visualization. Two (or more) processor cores work simultaneously, which dramatically increases work efficiency. ... >>

Type MC33897 Single-Wire CAN Interface Transmitters 22.03.2005

FREESCALE SEMICONDUCTOR introduced MC33897 single wire CAN interface transmitters designed for automotive applications. Chips can also work on a two-wire CAN line. Chips are available in 8- and 14-pin packages. ... >>

Power supply modules type SPM 21.03.2005

FAIRCHILD SEMICONDUCTOR announced the production of SPM power modules that provide efficient motor control for applications such as washing machines and air conditioners. The modules are designed for powers from 300 W to 13 kW and output currents from 3 to 30 A. Case dimensions are reduced to 44x26,8 mm. There is protection when the supply voltage is out of range, as well as protection against short circuits. ... >>

MFP Stylus Photo RX600 20.03.2005

The EPSON CORPORATION Stylus Photo RX600 combines a photo printer, scanner, slide module, copier and card reader in one. Provides 6-color photo printing at 5760x1440 dpi. It has a built-in 2,5" LCD display for operation without a computer. It scans with a resolution of up to 2400x4800 dpi. It scans films and saves to a memory card without a PC. ... >>

DS2711, DS2712 - NiMH charger ICs 19.03.2005

DALLAS SEMICONDUCTOR-MAXIM has started production of microchips for chargers for nickel-metal hydride batteries of types DS2711, DS2712, designed to charge 1 or 2 AA or AAA batteries. Temperature, voltage, charge time are continuously monitored, and changes are made to the charge algorithm. When alkaline cells are installed, the microcircuits detect them and do not turn on the charge, and the charge of nickel-cadmium batteries is maintained. DS2711 operates in linear mode and DS2712 operates in switching mode. Chips are available in SO-16 or TSSOP-16 packages. ... >>

Two Families of Inexpensive High-Speed ​​USB Controllers 18.03.2005/XNUMX/XNUMX 18.03.2005

CYPRESS introduces two families of low cost, high speed USB controllers. The NX2LP controller is specially designed for NAND flash memory chips. It is extremely useful for recording large amounts of information (music, presentations, etc.). The AT2LP controller is designed for magnetic cards, micro drivers, optical drivers (CD-R/RW and DVD-R/RW). The devices can be configured for a wide range of applications (television, video recorders, etc.). ... >>

Universal programmer with USB interface 17.03.2005

B&K PRECISION has released a universal programmer with USB type 866 interface. It can program chips in SOIC, TSOP, DIP, TQFP, SSOP, PSOP and QFP packages. The device supports the programming of 15406 various chips, can work with PCs and laptops that have a parallel port, and is compatible with all types of Windows. Has a printout. ... >>

New color sensor type HDJD-S722-QR999 16.03.2005

AGILENT TECHNOLOGIES presents a new HDJD-S722-QR999 color sensor with dimensions of only 5x5x1 mm. The sensor determines the presence of a certain color and outputs its color coordinates in the form of voltages for the R (red), G (green), B (blue) components. The sensor is a 3x3 array of photodiodes with color filters. The supply voltage is 5 V. The body of the device is leadless for surface mounting. ... >>

SAMSUNG introduced the first DVD recorders 15.03.2005

The Russian representative office of "Samsung Electronics" presented a range of new products - DVD-recorders. These are the first devices of this type in the company's lineup. Feature of all recorders is support of Multi-format of record: DVD-R/-RW/- RAM. The following formats are also supported: DVD-Video, DVD-R/-RW/-RAM, CD-DA/-R/-RW, MP3, JPEG. There are DV, RCA, S-Video connectors on the front panel of each device. The DV digital output will allow you to copy the film captured on the camera in digital quality directly to DVD. Each recorder comes with a 9,4 GB DVD-R AM disc that can record up to 12 hours of video. The "Smart RP" processor has been specially developed for Samsung's new recorders, allowing recording to start at the touch of a button. The DVD-R100E and R100EA models open the line. Next comes the DVD-VR300 combo recorder. The DVD-R100 and DVD-R100EA models differ only in the different front panel design and support for the Show View function of the latter model ( ... >>

New series remote control 14.03.2005

Pogo Products has introduced a battery-free remote control. The EZPower Universal has a built-in handle that only needs to be twisted a little to generate the energy the device needs for seven days. Thus, the remote control is not only "friendly" to the environment and to your hands, but it is also capable of operating devices such as TV, VCR, Cable, SAT, AUX and DVD player. The remote control will first appear in the US for about $25. ... >>

Microwave oven that chooses how to cook food 13.03.2005

What the creators of "smart" refrigerators from Electrolux stumbled on was commercially successfully implemented by the developers of Salton. Their microwave oven is equipped with a barcode scanner and memory, which contains about 4 products. After reading the code using a convenient scanner-pen, mounted on the front panel, the electronic "brain" of the stove finds the desired recipe in the database and starts the appropriate mode of operation. Additional data is loaded into memory using special Smart Appliance Network Interface (SANI) cards. Product codes and programs can also be entered manually. The oven has a power of 850 W, an internal volume of 25000 cubic centimeters and a large LCD display with trendy blue backlight. ... >>

Fog Screen 12.03.2005

Finnish engineers have begun manufacturing fog screens. Three years ago, scientists from the Seinäjoki Technology Center proposed making a screen for showing films, slides and other beautiful pictures not from a sheet, like the Lumiere brothers, or plastic, but from fog. The main advantage of this device, which is more like a special effect of a science fiction film, is that you can easily pass through the image shown on the fog. An ultrasonic water atomizer is used to create fog. The smallest droplets are picked up by an even, without a single vortex, air flow and deliver them to the condenser. The amount of water required to create the mist is so tiny that if you run your hand inside the screen, it stays dry. And to form an image, you need a projector with an aperture ratio of at least 3000 lumens. As it should be for this kind of technique, the darker the room, the better. "We started by making screens of the same size, one and a half by two meters, but I hope that the day is not far off when ... >>

The restaurant starts with a TV camera 11.03.2005

The client is just approaching the restaurant and does not know what he will choose from the menu, and his order is already being prepared in the kitchen. Is it possible? Maybe if "Bob" works in the restaurant. "Bob" is the name of a computer system for roadside fast food restaurants created in Pennsylvania (USA). There are video cameras on the roof of the restaurant that feed the image of the cars arriving and the hungry customers exiting them to a computer running image recognition software. To find out what the visitor will order, two parameters are used - the type of car and the height of the visitor. Statistics say that arriving in a truck or a hefty jeep most often takes an extra large hamburger and coffee. A large "family" car drove up - expect to order chicken pieces in batter, fried potatoes and Pepsi or cola. Large people coming to the door of the restaurant are likely to order hamburgers, and small people, that is, children, need to prepare children's favorite dishes. Also counted ... >>

Live fast - live longer 10.03.2005

It would seem that a slow, sluggish metabolism should prolong life, in the same way that a car can work longer if it is spinning at a lower speed. However, Scottish biologists at the University of Aberdeen have found that, at least in laboratory mice, this is not the case. John Speakman and his colleagues measured the oxygen consumption of 42 mouse tribes, which indicates metabolic activity. The result: mice with a high metabolism lived more than a third longer than mice with a slow metabolism. Speakman believes that the reason for this phenomenon lies in the mitochondria - the energy stations of a living cell, where organic food substances are burned using oxygen. With a high exchange rate, the combustion efficiency is higher and less toxic waste products are produced - free radicals that damage the delicate mechanisms of the cell and thereby contribute to aging. Speakman intends to study the possibilities of increasing metabolism in humans. If we recalculate the results obtained ... >>

Lead free piezoceramic 09.03.2005

Piezoceramic materials are widely used in modern technology. A piezoceramic plate has the ability to create an electric charge with any deformation and, conversely, change its shape when an electric voltage is applied to it. The first property is used, for example, in piezoceramic heads for turntables or in gas stove lighters. The second - for example, in cell phone calls. The most common and most effective piezoceramic material today is lead zirconattitanate, in which lead is 60% by weight. Once in landfills, used electronics pollute the soil and water with lead. A new type of piezoceramics, which does not contain lead, has been created in the laboratory of the Japanese company Toyota, but in preliminary tests it showed no worse results than lead. It is a polycrystalline material consisting mainly of sodium and potassium niobate with small additions of lithium, tantalum and antimony. Given that ... >>

Genetic engineering during a thunderstorm 08.03.2005

Moderate-intensity electrical discharges have long been used in genetic engineering to punch microscopic holes in cell membranes through which a foreign gene can enter the cell. French geneticists from the University of Lyon suggested that a similar process can occur in nature with soil bacteria when lightning strikes the ground during a thunderstorm. Although at the point where the lightning directly strikes, bacteria certainly die, in neighboring areas, where the action of the current is weaker, they can survive and exchange genes through the pores that have opened in the shell. Biologists have asked physicists simulating lightning strikes in the lab to shock cultures of bacteria. It turned out that the soil bacteria Pseudomonas and the laboratory strain of E. coli do take on foreign DNA when lightning strikes them. The researchers suggest that the exchange of genes during thunderstorms may be widespread in nature. It accelerates the evolution of bacteria. ... >>

Floating houses are not afraid of floods 07.03.2005

After the catastrophic floods that have befallen Western Europe in recent years, a block of flood-proof houses has been built in the Dutch town of Maasbommel. The house, entirely wooden, is planted on concrete piles and can slide on them, floating up to a height of up to 360 centimeters. Each house has three rooms with a living area of ​​65 square meters. ... >>

Unsatisfied eyes tempt the stomach 06.03.2005

American nutritionists Barbara Kahn and Brian Wansing offered a group of students multi-colored lollipops, and some of the lollipops were sorted by color into separate cups, and some were mixed in one cup. It turned out that the experimental students ate the colored placer 69% faster. In another experiment, volunteers were offered two bowls of multi-colored chocolates. One contained pills of seven colors, the other ten. The second mixture was eaten 43% faster. "The more different colors we see, the more we eat," the authors of the study say. How powerfully the visual factor affects appetite has been shown by other experiments. It turned out that cinema goers eat 50% more popcorn if it is packaged in oversized paper bags. This happens even if the treat is stale and slightly musty. And office workers eat more if the food is within sight or right on the desktop. Especially if the packages have already been opened, and the boxes with ... >>

Eternal microgravure on diamond 05.03.2005

Scientists from the Institute for Solid State Physics and Materials Science in Dresden (Germany) have developed a way to store documents in supermicroscopic form indefinitely. On a diamond film deposited from a carbon plasma, a text or picture is engraved with the tip of a tunneling microscope. When a voltage is applied to the needle, the diamond film is bombarded by electrons flowing from the needle. Where a jet of electrons hits the film, the diamond turns into graphite. The density of graphite is less than that of diamond, so at this point a tubercle of carbon atoms is obtained. Ten thousand of these tubercles can form a square image with a side of 1,2 micrometers, for the reproduction of which, again, it is necessary to scan it with the needle of a tunneling microscope. With such a density of information recording, one postcard can contain photographs of all six billion inhabitants of the Earth. The authors of the method claim that, due to the exceptional stability of graphite and diamond, records will be able to ... >>

If a bee stings a bacterium 05.03.2005

Bee venom may be able to replace antibiotics. The main component of bee venom, mellitin, a peptide (small molecule protein) consisting of 26 amino acids, has been found to kill bacteria by destroying their shells. Moreover, bacteria that have developed resistance to antibiotics also succumb to it. Biochemists from the Queen's University in Belfast (Ireland) identified two types of mellitin: one is especially toxic to microbes, but destroys the shell of human red blood cells, the other does not harm red blood cells, but is not very dangerous for bacteria either. Scientists hope to use genetic engineering to combine both molecules into one, retaining only useful properties in this hybrid. ... >>

magnetic painting 04.03.2005

A group of Mexican geophysicists led by Avto Gogichaishvili has found a new method for dating rock art. Since the red paint with which the Indians of pre-Columbian America painted their frescoes on the walls of caves contains particles of magnetic minerals - hematite and magnetite, these drawings record the direction of the magnetic field at the time when the frescoes were applied to the stone. Since the record of the changes in the magnetic field is also preserved in the surrounding rocks, it is possible to determine from the magnetism of the drawings when they were made. The age of the studied frescoes is from eight hundred to a thousand years. ... >>

sea ​​bus 03.03.2005

The British company "Covelink Marine", engaged in the production of amphibious all-terrain vehicles, has developed a floating bus with 28 seats. A diesel engine with all-wheel drive allows it to reach speeds of up to 110 kilometers per hour on a good road, and after launching, a jet propulsion unit is turned on, accelerating the sea bus to 55 kilometers per hour. Options are produced for the military, customs officers, rescuers, lovers of tourism, hunting and fishing. ... >>

Halley's comet on Armenian coins 03.03.2005

Armenian astrophysicist V. Gurzadyan, together with an employee of the Museum of History of Armenia R. Vardanyan, studying a rare series of ancient copper and silver coins, discovered on the tiara of King Tigran the Great an image of a star with a crooked tail. It appears to be Halley's comet. Tigranes the Great, who ruled from 95 to 55 BC, could see the comet when it was at perihelion. The reverse of the coins of the same series depicts a crowned goddess sitting on a stone with a palm branch in her hands, which, without a doubt, is an image of the statue of the goddess Tyche by Eutykhides, a student of the famous ancient Greek sculptor Lysippus. As you know, Tigranes the Great conquered the Greek city of Antioch, where this giant bronze statue was located in one of the temples, in 83 BC. Thus, the time of coinage was established - after 83 BC, and the closest visit to Halley's comet took place in 87 BC. ... >>

Aliens better hurry 02.03.2005

Alien civilizations that want to get to know us better hurry up: they have only half a century left to search for our coordinates in the Universe. So says one of the pioneers of the search for extraterrestrial intelligence, Frank Drake. Although several attempts have been made to send specially crafted radio messages to other civilizations into space, the Earth has been inadvertently radiating ultrashort waves of television stations in all directions for half a century, since the advent of mass television. Drake believes that aliens have a chance to notice this radiation, which has already spread to a distance of about 50 light years. In the ultrashort wavelength range, the Earth looks like a bright star. There are no natural sources of VHF of such power. But in another half century, he says, this radio star will go out, as cable and satellite are confidently replacing terrestrial television. The average television broadcast transmitter has a power of one megawatt. Cable TV doesn't broadcast signals at all. ... >>

Phone not for talking 02.03.2005

In the US, a cell phone-sized device has been launched that works on cell phone networks, but does not transmit conversations, but only CMC messages and e-mails. The texts appear on the color screen. The exchange of written messages is especially fashionable among young people, but apparently the deaf and dumb will also use the new apparatus. ... >>

impure blood 01.03.2005

The World Wildlife Fund has tested the blood of 44 members of the European Parliament for the presence of dangerous synthetic compounds introduced by humans into the environment. 101 substances belonging to four groups of chemicals were determined: organochlorine pesticides, polychlorinated biphenyls, phthalates and perfluorates. Parliamentarians were subjected to examination voluntarily. All the deputies who donated blood were found to have representatives of all four classes of compounds. There are 13 potentially toxic substances most commonly found in blood, including the breakdown products of DDT, banned in Europe in 1972, and polychlorinated biphenyls, banned since 1987. Among the compounds with the highest concentration in the blood is one of the phthalates, diethylhexyl phthalate, widely used as a plasticizer in plastics, synthetic carpets, paints and varnishes. Until January 2003, diethylhexyl phthalate was even used in cosmetics, but it was banned as soon as it was found that it affects the end ... >>

house on a corkscrew 01.03.2005

The German company Kezeas produces a line of screw piles that can replace a concrete foundation. Such a pile, about one and a half meters long, is screwed into any soil, including swampy, and holds a load of 25 times its weight. On several piles, you can strengthen a country house, a bridge, a water tower, a windmill tower or a television antenna, even an oil platform in the sea. Smaller models are screwed by hand, with a crank, larger ones require a special drilling rig. ... >>

New digital TDM switch 28.02.2005

ZARLINK SEMICONDUCTOR has introduced a new TDM (Time Switching) digital switch type ZL50031. The new device complies with the H.110 data interface and is used to transmit voice signals in packet data networks. ... >>

Miniature Reflective Optical Sensor TCND3000 27.02.2005

The new miniature reflective optical sensor TCND3000 from VISHAY INTERTECHNOLOGY allows you to work in bright sunlight up to 200 kilolux. The device provides detection at distances up to 2 cm and can be used in systems such as mobile phones, automotive systems, home applications and video cameras. ... >>

First cable modem and PCX5000 router 26.02.2005

The PCX5000 from TOSHIBA ELECTRONIC COMPONENTS, INC is the industry's first cable modem and router. It includes wired and wireless options, four 10/100 ports and an 802.11b wireless interface. This allows the user to connect many computers to the Internet, to ensure security. No separate cable modem needed, no phone line connection needed. ... >>

Highly integrated microcontroller with built-in programmable logic 25.02.2005

ST MICROELECTRONIC has introduced a highly integrated microcontroller with built-in programmable logic type STW21000 for wireless communication applications. The microprocessor has a dynamic memory of 16 Mbit, a programmable logic block (FPGA) and a wide range of analog and digital peripherals. The presence of a programmable logic block provides the device with high flexibility, the ability to use it with a wide variety of interfaces and protocols. Applications include HDLC controllers, 10/100 Ethernet, and more. ... >>

Digital music player SONY NW-E107 24.02.2005

The digital music player NW-E107 from SONY CORPORATION provides up to 70 hours of continuous playback on a single battery charge, has a built-in memory of 1 Gbps, and a liquid crystal display. Plays in ATRAC3 and MP3 audio formats. ... >>

The world's largest TFT liquid crystal display 23.02.2005

SAMSUNG ELECTRONICS has developed the world's largest 82-inch (more than 2 m diagonally) TFT LCD screen. It took 6,22 million TFTs to achieve 12,44 million pixels. The viewing angle of the screen reaches 180°. It is reported that the new screen provides the world's highest contrast ratio of 1:1200, high color saturation, 8 ms information change speed. ... >>

PNX1700 Single Chip Media Processor 22.02.2005

PHILIPS SEMICONDUCTOR announced the release of the PNX1700 single-chip media processor, the latest member of the Nexperia family. It has been designed to provide unparalleled picture quality for movies, digital photos, news and TV programs. Applications for the device include digital media adapters, personal video recorders, videophones, and televisions. ... >>

Boost Voltage Converter NCP5007 21.02.2005

ON SEMICONDUCTOR NCP5007 step-up voltage converter is designed to power a set of 5 white LEDs, for which it provides an output voltage of up to 22 V at a supply voltage of 2,7 to 5,5 V. The microcircuit has built-in overload protection, standby mode, in which consumes only 0,3 μA, thermal protection and a low level of external radiation. Available in a compact TSOP-5 package. ... >>

LM5115 high-frequency regulator-controller microcircuit 20.02.2005

NATIONAL SEMICONDUCTOR Corporation announced the release of the LM5115 high-frequency regulator-controller microcircuit, which operates in power supplies with an output voltage of up to 75 V. When paired with a DC / DC converter, the overall synchronization of these devices is ensured. ... >>

New cordless phone MD761 19.02.2005

New cordless phone MD761 from MOTOROLA INC. operates at a frequency of 5,8 GHz and has a built-in answering machine, speakerphone and caller. The device is built on digital technologies and provides improved speech clarity, batteries provide an unlimited duration of conversation. ... >>

New hot swap controller 18.02.2005

The ISL6173 chip from INTERSIL is a "hot-swappable" controller in the supply voltage range from 2,5 to 3,3 V. The thresholds for regulating the load current are set by two external resistors. The chip is designed for automotive applications. ... >>

New ICs for power factor correction in rectifiers 17.02.2005

INTERNATIONAL RECTIFIER presents a new series of IR1150 chips for power factor correction in rectifiers. The compact microcircuit in the SO-8 package allows you to work in circuits with power from 75 W to 4 kW. The device allows you to bring the power factor to 0,999, while the coefficient of nonlinear distortion does not exceed 4%. ... >>

Ultra-thin, lightweight and flexible touch panels for mobile applications 16.02.2005

FUJITSU COMPONENTS Corporation has launched ultra-thin, lightweight and flexible touch panels for mobile applications. The panels have a thickness of 0,65 mm, diagonal dimensions from 4,5 to 15 cm, transparency up to 87%, and are designed to transmit up to 100000 words of information about touch coordinates. ... >>

ScopeMeter 190 handheld oscilloscope 15.02.2005

The FLUKE CORPORATION ScopeMeter 190 handheld oscilloscope has an input bandwidth of up to 200 MHz, a sampling rate of up to 2,5 Gsamples per second, and an internal memory of 27500 time points. The device is powered by batteries and is indispensable for field measurements. ... >>

New DC/DC converters FAN2011 and FAN2012 14.02.2005

FAIRCHILD SEMICONDUCTOR presents new DC/DC converters FAN2011 and FAN2012 with output current up to 1,5 A. New converters operate at 1,3 MHz, have 95% efficiency and are the best in this indicator on the world market. The devices are available in a 6-pin MLP package with dimensions of 3x3 mm. The output voltage is adjustable from 0,8 V to the input. The FAN2012 converter has a contact for external switching on and off. ... >>

New IC Series S1R77000 13.02.2005

EPSON CORPORATION's new S1R77000 series of ICs includes four analog input ICs for scanners, multifunction printers, faxes, and other scanning applications. The microcircuits include components such as automatic level control, quantization, and analog-to-digital conversion. There are CCD sensors along with sweep generators for them. ... >>

New router for communication networks DS33Z41 12.02.2005

The new DALLAS SEMICONDUCTOR-MAXIM DS33Z41 communication router covers the Ethernet 10/100 network segment and is designed for bidirectional transmission of four non-overlapping PDH/TDM streams. The router communicates with transmitters and T1/E1 framers. It is possible to connect an external static memory of 16 MB. Supply voltage 1,8 V, 3,3 V sources can be connected at the input. ... >>

New family of USB microcontrollers on M8 11.02.2005

CYPRESS introduces a new family of USB microcontrollers based on the popular M8 architecture for applications that use human contact devices (keyboards, mice). The family includes microcontrollers CY7C639xx, CY7C638xx and CY7C633xx. ... >>

Model 4012A Sweep Generator 10.02.2005

B&K PRECISION launched the Model 4012A sweep generator operating in the frequency range from 0,5 Hz to 5 MHz. The output signal of the generator can be sinusoidal, triangular, rectangular and sawtooth. Swing frequency setting - coarse and fine. The device has a 4-digit LED display. Frequency swing is possible both linearly and logarithmically. The output level can be set to 20Vp-p into a 1MΩ load and up to 10Vp-p into a 50Ω load. ... >>

New microcontrollers for electronic lamp ballasts 09.02.2005

ATMEL CORPORATION announced the release of four new microcontrollers designed for use as electronic lamp ballasts: single or multiple fluorescent lamps, high brightness halogen lamp systems. The AT90PWMx microcontroller belongs to the AVR class and includes the AT90PWM3 and AT90PWM2 variants with 8K Flash and the AT90PWM1 with 4K Flash. The AT83EB5114 microcontroller belongs to the C51 class and has a 4-kilobyte ROM and a 256-kilobyte EEPROM. Electronic ballasts with these microcontrollers operate at high frequencies, include power factor correction devices. Microcontrollers are available in SO-24 and SO-32 packages. ... >>

New types of acoustic resonators for frequencies of 1,8...2,0 GHz 09.02.2005

AGILENT TECHNOLOGIES has presented new types of acoustic resonators for frequencies of 1,8...2,0 GHz. The ACMD-7401 receive-transmit switch provides 1,8 dB transmission loss, while receiving 2,2 dB, the ACPF-7002 transmission channel filter provides 2,5 dB loss in the 1850 ... band 1910-33 MHz. In the same range, the ACPF-1930 transmission channel filter provides at least 1990 dB attenuation. The devices are produced in housings 7003x35 mm in size and 5 mm thick. Operating temperature range from -5 to +1,4°С. ... >>

virtual telekinesis 08.02.2005

Austrian engineers have taught the computer to be controlled by the movement of thought. “Managing the space around us with the help of thought will soon be not a fantasy, but a reality,” says Dr. Christoph Guger. “Thirteen years ago, only two dozen laboratories were engaged in this task, and now their number has exceeded a hundred.” In particular, the company, headed by Dr. Guger, within the framework of the European research project "Presencia" has created equipment and software that teaches a computer to control the movement of the cursor solely by human power. The main part of the equipment is the electrodes for taking the encephalogram, with the help of which the pocket computer captures the electrical activity of the brain. Sitting in front of a personal computer screen, a person with electrodes on his head tries to mentally imagine the movement of the cursor on the screen to the left and then to the right. The whole procedure is repeated twenty times, after which the computer builds a pattern of this brain activity corresponding to the representation ... >>

The laser puts nanodots 08.02.2005

American scientists have come up with a new technology for mass production of quantum dots. A quantum dot is good because it is able to re-emit the absorbed light, and its wavelength strictly depends on the size of the dot. However, until now, scientists are not very good at either obtaining exactly the same nanodots or arranging them in a strict order and are constantly looking for new techniques. For example, scientists from the University of Missouri Rola (USA), led by Dr. Massimo Berti, offer such a method. Two components are mixed in silica gel - cadmium nitrate and thiourea. At room temperature, these substances react to form particles of a semiconductor substance, cadmium sulfide. To slow down the reaction, the gel is immediately cooled. Then an infrared laser beam passes over the gel; it heats up the smallest, micron-sized areas of the surface, and there a reaction begins, which gives nanometer particles of cadmium sulfide. These are nanodots, and they are built in strict ... >>

Braille display 07.02.2005

German engineers have created a display for the blind out of metal with shape memory. In order for, say, a programmer, even who has lost his sight from countless hours spent in front of the monitor, to continue to delight society with the fruits of his creative work, as well as to enable all blind people to use information technology, engineers design displays for the blind . They are based on the same Braille alphabet that is used in books - a set of raised dots; they are felt with fingers and read the text. A new solution to the problem was proposed by German scientists from the center "CAESAR" (Center for Advanced European Research and Research), headed by Dr. Bernhard Winzek. The display they proposed is based on thin films of several shape memory alloys deposited on a silicon substrate. Under the action of current, the metal heats up, bends and pushes the plastic pin. It is the person working behind such a display who feels it. Another electrical signal returns ... >>

Glass to protect secrets 07.02.2005

British engineers have figured out how to protect information that can fly through window glass. Computers in the office are now usually connected to each other not with wires, but with radio waves. And they easily pass through glass, which means that any attacker can gain access to confidential information. Scientists at the University of Warwick have created a method for making glass that understands which radio signals can and cannot be emitted outside a building. To achieve this, an electrical circuit is applied to the glass - a tunable dipole grating. It is made using thin film technology from optically transparent components and freely transmits light. Such a lattice has three advantages over conventional, non-adjustable ones. Firstly, it is possible to block exactly the frequency at which computers communicate with each other, and in which case this setting can be easily changed. Secondly, there is no need to develop a special lattice for each window size - one is enough ... >>

virtual tourism 06.02.2005

The ETH Zurich (Switzerland) created a computer model of the Swiss Alps, on which virtual tourists walk. Real alpine landscapes are shown on the computer screen, and they can be changed: plant a grove or instantly cut it down to its roots, let a herd of cows, fill a ravine, pave a path, arrange a picnic area. Each time, a “tourist” is allowed through the changed landscape, who then expresses his opinion about the beauties encountered and about the ease of overcoming the route. You can build a lift or funicular in a certain place and see if it will be popular with travelers. The program is based on data from surveys of real tourists who traveled through the Alps. They were asked about which sections of the route and the beauty of mountain landscapes aroused the greatest admiration, why they chose this or that route, which places they would like to visit again, and what they did not like on the road. Model recommendations carry over ... >>

Bioceramics absorb metals 06.02.2005

German scientists from the Research Center for Atomic Physics in Rossendorf near Dresden have developed a "live" filter that actively absorbs heavy metals from water. The filter is based on bioceramics, a highly porous material that has been used for years for bone replacement. In 1995, physicists discovered a strain of bacteria in uranium-bearing rock heaps that quickly and in unusually large amounts concentrate uranium in their cells from water seeping through the heaps. Now the bacteria have been "tamed", they have been settled in numerous pores penetrating bioceramics. By passing water contaminated with uranium compounds through this porous material, clean drinking water is obtained at the output - from 86 to 99% of uranium is absorbed. Uranium is not poisonous to bacteria, since their cells contain a protein that tightly binds this heavy metal. They are also capable of removing lead, cadmium, copper and nickel from water. ... >>

Poetry and health 05.02.2005

Curious statistics on the life expectancy of writers was collected by James Kaufman from the University of California (USA). Based on 1987 life dates of outstanding novelists, poets, playwrights, non-fiction writers from Eastern Europe, North America, China and Turkey, Kaufman calculated that the average life expectancy of poets is 62,2 years, playwrights - 63,4 years, novelists - 66 years, documentary filmmakers - 67,9 years. The largest gap between poets and authors of "literature of fact" was noted in North America: 66,2 and 72,7 years, respectively. The author of the study believes that the life of poets is shortened by their increased emotionality. But perhaps the whole point is that modern poets write in the wrong size. Research by German physicians shows that true classical poetry can be beneficial to health. Scientists at a private German university forced 20 volunteers to march in a gym in silence or by reciting Homer stanzas. It turned out that the declamation ... >>

high speed train in korea 05.02.2005

Since March 2004, the first high-speed railway line has been operating in the Republic of Korea. She connected Seoul with Busan. French technology is used, but the compositions are made mainly in Korea. The length of the line is 412 kilometers, of which 190 kilometers are tunnels and 120 kilometers are bridges and viaducts. The train runs this way in 2 hours and 40 minutes. ... >>

Language and color vision 04.02.2005

In some languages, blue and green colors are not distinguished; there is only one name for them. Studies by physiologists from the United States have shown that strong ultraviolet light can damage those cones in the retina that react to blue light. As a result, a person ceases to distinguish blue from green. Among peoples living in the tropics, where the ultraviolet radiation of the Sun is stronger than at higher latitudes, a single name for blue and green is more common. The Welsh language spoken in Wales (UK) does not have names for colors such as blue, gray or brown. In the Dani language (the people living in Indonesia), there are only two color designations - black and white, more precisely, all light colors are called "mola", and all dark colors are called "miles". But the physiological basis of these linguistic features is not yet known. ... >>

Amoeba on a rubber track 04.02.2005

Pascal Zilbertsan from the Curie Institute (France) was able to measure the force with which the amoeba rests on the substrate during its movement. He drives the protozoa along a rubber track, consisting, like bathroom rugs, of "pimples" one micrometer in diameter and 10 micrometers high. By measuring the deflection and deflection of the rubber posts under a microscope, you can calculate how much force is applied to them. It turned out that when crawling, the amoeba almost does not touch the substrate in the middle, leaning on the path mainly with the edges of its iridescent body and pulling itself up with its front end. ... >>

Solar power plant on a roll 03.02.2005

In one of the works of the now forgotten Soviet science fiction writer Vladimir Nemtsov, a "solar fabric" appeared - a flexible solar battery made of semiconductor filaments that could be folded, cut, cut and sewn together. Something similar is already produced by the American company "IOP Technologies". These are flexible, rollable solar panels of different power - from 5 to 40 watts, they all give a voltage of 16,5 volts and are designed to charge batteries of various portable electronics - from a mobile phone to a laptop or a small TV. The most powerful of the batteries weighs about 1700 grams. ... >>

How many people are in the car 03.02.2005

To force car owners not to drive alone, but to take neighbors as fellow travelers, thereby saving fuel, space on the road and reducing air pollution, the British road authorities have introduced a separate lane for cars with passengers on some roads. But it turned out to be quite difficult for the police to make sure that the "individual farmers" did not occupy this row. Scientists from Loughborough University have created an infrared video camera and software for it, allowing a computer with a connected camera in a stream of cars to highlight those in which there is no one but the driver. The system does not confuse with the head of the passenger sitting in the car either the muzzle of a large dog sitting next to the driver, or the head restraints available on each seat. Even if the driver, wanting to deceive the machine, puts his open right hand on the headrest of the seat next to him, the program will not mistake his hand for a person's face. The number of the violator is registered, and a receipt for the fine is issued. ... >>

Women in sports will overtake men in 2156 02.02.2005

Andrew Tatham from the University of Oxford (England) analyzed data on world records for men and women in the 1900 meters at the Olympic Games from 2004 to 1908. Women have been participating in this sport only since 2156, but the gap between them and men is gradually narrowing. If you extrapolate from the observed trends, it turns out that at the 8,079 Olympic Games, a woman will become the world champion in sprinting. She will show a result of 8,098 seconds at a hundred-meter distance, and a male competitor - XNUMX seconds. Tatham himself admits that his calculations are a bit of a stretch, but emphasizes that the growth of women's records for almost a hundred years has been surprisingly linear. ... >>

Minibus without a driver 02.02.2005

The first pilot taxi line without a driver was launched in June 2004 in the city of Antibes in southern France. This is a joint development of several European companies. An electric bus travels at a speed of 20 kilometers per hour on a 1400-meter road from the port to the city center. The road is marked with magnets embedded in the asphalt every three meters, and the automatic driver is guided by them. To avoid collisions with other vehicles and pedestrians, various sensors, including a video camera with an image processing program, allow. In 2005, similar minibuses without a driver, controlled by a satellite navigation system, will appear in Rotterdam (Holland). ... >>

Neolithic art gallery in Somalia 01.02.2005

In the west of Somalia, near the border with Ethiopia, French archaeologists found, at the suggestion of local residents, several grottoes, decorated with one and a half hundred Neolithic frescoes. Their subjects are shepherds with herds of cows. Previously, the age of the drawings was determined at 4-5 thousand years, but archaeologists hope that some of the paints used by the Stone Age artists were mixed with milk. In this case, scrapings of paints can be dated more accurately by radiocarbon dating. The drawings give an idea of ​​the life of the early pastoral societies in this part of the continent. This is the largest find of prehistoric painting in Africa after frescoes discovered about half a century ago in the Tassili highlands. ... >>

Latvia regulates smells 01.02.2005

In 2003, the European Union, of which Latvia is a member, introduced standards for the measurement of malodors. Most often, residents of Latvia complain about the suffocating smoke of stokers, the fumes from burning waste, including old tires. There are many complaints about odors from the production of charcoal, from oil refineries and gas stations, from sewage treatment plants, from the production of fishmeal. In agriculture, the most "fragrant" pig farms and poultry farms. According to the rules adopted in Europe, the permissible concentration of an unpleasant odor in residential areas is five units, in agriculture - eight, and in production - ten. This rate is allowed to exceed no more than seven days a year. Now, after complaints from the population, an air sample is taken in a plastic bag and sent for analysis to Finland, but in 2005 an odor laboratory should be organized in Jurmala. Scientists at the Latvian Institute of Solid State Physics have created an artificial nose that is not able to determine whether a given smell is pleasant. ... >>

M25P64 serial flash chip 30.01.2005

ST MICROELECTRONICS has announced the release of M25P64 serial flash memory chips with a capacity of 64 Mbit for storing code information. The memory is very fast - up to 50 MHz, so it takes a little time to overwrite it. It can be used in printers, CD and DVD players. The company guarantees up to 100000 write and erase cycles. ... >>

New ferroelectric memory chip FM25L16 29.01.2005

RAMTRON announced the release of a new ferroelectric memory chip FM25L16, which operates with a supply voltage of only 3 V and develops speed up to 20 MHz. The microcircuit has a serial SPI interface and is intended primarily for automotive applications. ... >>

MG4200 GPS Receiver Chip 28.01.2005

by MOTOROLA INC. Launched production of MG4200 GPS receiver chip. The microcircuit receives GPS signals directly to the antenna at a frequency of 1,575 GHz, performs complete signal processing and outputs the results to the SPI and UART interfaces. Available in a 64-pin BGA package measuring just 7x7mm. ... >>

New 16-bit DSPs 27.01.2005

MICROCHIP TECHNOLOGY announced the start of production of two 16-bit digital signal processors dsPlC30F4011 and dsPIC302F4012, which allow you to work with information processing speeds of 20 and 30 million instructions per second, respectively. The microcircuits have 48 Kbytes of flash memory and a CAN interface. They are designed to control power conversion systems and electric motors. The dsPIC30F4011 is available in a PDIP-40 package, while the dsPIC302F4012 is available in an SDIP-28 package. ... >>

High Speed ​​Amplifier Types LT1991 and LT1995 26.01.2005

LINEAR TECHNOLOGY introduced high-speed amplifiers of the LT1991 and LT1995 types with a choice of gain. In conventional amplifiers, the gain is selected using external resistors, in the LT1991 and LT1995 amplifiers, precision resistors are already inside. The choice of gain is carried out by installing jumpers between the outputs. The LT1991 chip has eight precision resistors that allow gains to be obtained with an accuracy of 0,04%. The bias voltage drift is only 1 µV/°C and the supply voltage range is 2,7 to 36 V. The LT1995 also has 8 precision resistors. But it is faster: the rate of change of voltage at the output is 1000 V/µs. The supply voltage range is from +2,5 to +15 V. Both microcircuits are produced in small-sized MS0P-10 packages. ... >>

Bright and slim surface mount digital displays 25.01.2005

KINGBRIGHT has produced the world's brightest and thinnest surface mount digital displays, measuring just 3mm thick. They are available in 1, 2, 3 and 4 digits, while the size of the digit varies from 5 to 14 mm. The displays are ideal for compact instruments with digital readouts. ... >>

Electromagnetic relay FUJITSU COMPONENTS FTP-K3 24.01.2005

FUJITSU COMPONENTS has introduced a new type FTP-K3 electromagnetic relay for commercial and industrial applications. The relay operates with switched voltages up to 250 V and currents up to 20 A, while its power consumption is only 780 mW. The relay is produced in a housing with dimensions of 30x15,7x23,3 mm and is designed for 2 million mechanical operations. Operation voltages are selected from the range: 5, 6, 9, 12, 18 and 24 V. ... >>

New three-phase power quality analyzer 23.01.2005

FLUKE CORPORATION has launched a new three-phase power quality analyzer 430. The device measures voltages and currents in three phases and neutral, as well as power, power consumption, harmonic content and much more. Designed for voltages up to 600 V. ... >>

New MOSFET transistor FDC6020C 22.01.2005

FAIRCHILD SEMICONDUCTOR has introduced a new MOSFET FDC6020C in the smallest package (3x3x0,9 mm) for surface mounting. Despite its small size, the transistor can operate at a continuous current of up to 1 A and has excellent on-resistance characteristics (52 mΩ). ... >>

Cheap ICs - Signal Generators 21.01.2005

DALLAS SEMICONDUCTOR-MAXIM announced the release of cheap signal generator chips, in which the frequency is set by the manufacturer. In the DS1088L chip, the frequency is set in the range from 312 Hz to 133 MHz with an accuracy of + 0,3%, in the DS1099 chip - in the range from 0,25 Hz to 1,048 MHz with an accuracy of + 1,0%. Microcircuits are produced in miniature cases 3x5 mm in size and cost 0,38-0,45 dollars. ... >>

Portable spectrum analyzer with analysis bandwidth up to 3,3 GHz 20.01.2005

B&K PRECISION has released the Model 2650 Handheld Spectrum Analyzer with an analysis bandwidth of up to 3,3 GHz. Thanks to this frequency band, the device can be used in numerous applications such as CDMA, GSM, Wireless LAN, Bluetooth. The device can measure electric and magnetic fields, calculate average values, has a printout and a number of other useful properties. ... >>

New family of laser diode drivers 19.01.2005

ATMEL CORPORATION has announced the release of a new family of ATR084x low voltage differential laser diode drivers designed for DVD+RW/CD-RW combo drivers with speeds up to 16x for DVD and 52x for CD. The new family includes 5 types of four-channel devices with two outputs, one of which is designed for a diode with a wavelength of 780 nm, the other for a diode with a wavelength of 650 nm. The ATR0842 has a 408nm blue laser diode. The rise and fall time of the signal is less than 0,8 ns. The devices are available in leadless QFN-24 packages and have dimensions of 4x4x0,9 mm. ... >>

Powerful amplifier MSA260 with PWM modulation 18.01.2005

APEX MICROTECHNOLOGY has launched a powerful amplifier with PWM modulation MSA260. The amplifier operates with supply voltages up to 450 V and output current up to 20 A (output power up to 9 kW). Pulse frequency. PWM can vary widely. The microcircuit is designed to power electric motors, and can also work as a class D sound amplifier. ... >>

Variable Gain Amplifier 17.01.2005

ANALOG DEVICES introduces the industry's first single-chip variable gain amplifier, the ADL5330 attenuator. The amplifier has a frequency range of 1 MHz to 3 GHz and a gain control range of 60 dB (+20 to -40 dB), never before achieved on a single chip. The chip is available in a 24-pin 4x4 mm CSP package. ... >>

Surface Mount AMMP Chips 16.01.2005

AGILENT TECHNOLOGIES has announced additional surface-mount AMMP chips for portable radios up to 20 GHz. These add-on chips are the AMMP-5618 amplifier, AMMP-6530 mixer, AMMP-6420 power amplifier, AMMP-6220 low noise amplifier, and AMMP-6120 frequency multiplier. In total, this series includes 16 chips, on which you can build portable radio stations for various purposes. ... >>

American solar power 15.01.2005

American engineers have begun testing a system for generating electricity, which consists of small solar power plants. Our system, unlike the existing ones, consists of small modules, and the power plant can be put into operation gradually," says Chuck Andarka, project manager from the Sandia National Laboratory of the US Department of Energy. Actually, it was at the site of this laboratory that tests of the system began, consisting of six modules made by the second participant of the project - the company "Stirling Energy Systems Inc.. One module consists of 82 small mirrors placed on an aluminum honeycomb structure in the form of a bowl. These mirrors focus sunlight on an absorber. It turns light into heat and transfers it to the engine cylinder, where hydrogen is located - expanding when heated, it moves the piston and transfers heat into mechanical energy, and then into electrical energy. The conversion efficiency is quite good - 30%. "In principle, the solar field ... >>

Counting gazelles from space 14.01.2005

Zoologists from New York have figured out how to count gazelles and giraffes at the zoo and in the reserve from a satellite. High above the Earth, 280 kilometers from the surface of the planet, the private American satellite "Fast Bird" flies. It was the cameras installed on it that made it possible to fulfill the order of zoologists from the Bronx Zoo, who wanted to count gazelles, giraffes and other animals grazing in spacious enclosures using photographs from space. Indeed, in the resulting images, all animals were seen very clearly. The question arises: was it not easier to count them from the ground? Simpler, but this experiment was only the first stage of a program conceived by Dr. Eric Sanderson. In the zoo, the method of counting animals from heaven is just being tested. And the real task is to monitor the state of the reserves, where you can’t look in any other way than from space. “With the help of space technology, we can, from the comfort of a New York laboratory, observe elephant families in the Serengeti and ... >>

Fullerenes can be neutralized 13.01.2005

Recent studies have shown that fullerenes - round hollow molecules, consisting of several tens of carbon atoms, can damage the cells of living organisms. It is believed that these carbon balls, interacting with the fatty substances of the cell, cause the formation of free radicals. Active molecules of radicals break the cell, since its membrane consists of two layers of fatty substances. Now the experiments of biochemists from Rice University in Houston (USA) allow us to hope that the toxicity of hollow supermicroscopic balls can be largely removed by changing the composition of their surface. By attaching hydroxyl groups to 24 of the 60 carbon atoms that make up the fullerene molecule, scientists have reduced toxicity to human skin cell culture by seven orders of magnitude. Without such surface modification, fullerenes, even at low concentrations, kill skin cells. This discovery is important for practice, since fullerenes are increasingly used in technology - as an additive ... >>

Trouble swimming in syrup 12.01.2005

More than three hundred years ago, preparing for the publication of his famous work "Mathematical Principles of Natural Philosophy", Isaac Newton argued with Christian Huygens about whether it would be easier or harder to swim in syrup than in water. With neither a swimming pool nor enough sugar at their disposal, physicists limited themselves to a theoretical dispute. Newton argued that it was more difficult to swim in a viscous fluid, and Huygens insisted that although the resistance of the medium would be higher, it would also provide more support for the swimmer's propellers - arms and legs, which means that thrust would also be higher. The researchers did not come to a single conclusion, and Newton included both versions in his work. In our time, physicist Edward Cussler, who works at the University of Minnesota (USA), has managed to resolve a long-standing dispute. He threw more than 25 kilograms of guar gum into the university's 300-meter swimming pool. Derived from a tropical legume, this substance is used as a thickener in mayonnaise, ice cream, shampoos, and other products. ... >>

O formidable rocks are crushed with the roar of the wave 11.01.2005

The sound of the ocean surf, it turns out, is heard throughout the Earth. So says a professor of geology from the University of California (USA) Barbara Romanovich. In 1998, Japanese seismologists found that the Earth is constantly buzzing at a very low note, below infrasound - at frequencies from 2 to 7 millihertz, that is, one oscillation every few minutes. These tremors are very weak, but if concentrated in one focus, an earthquake of magnitude 5,7 would be obtained. Their reason remained unknown. Using two networks of seismographs - in the US and Japan, a group of scientists led by B. Romanovich followed the "hum of the Earth" for two years. To exclude loud interference, records were cut off for all days when noticeable earthquakes with a magnitude of 5,5 or more occurred anywhere on Earth. In two years, there were about 130 quiet days. Networks of seismographs, like spaced microphones, made it possible to track where this constant hum comes from. It turned out that when it is winter in the Northern Hemisphere, the noise comes mainly from ... >>

Needle found in Greenland 10.01.2005

German glaciologists found a pine needle in a core taken from the very bottom of the three-kilometer layer of ice covering Greenland. She is about 123 thousand years old. Then Greenland was covered with dense forests, and the average temperature of the Earth was 2-5 degrees Celsius higher than now. Since the needle was not petrified, but simply frozen into the ice, it is hoped that it will be possible to isolate the DNA of an ancient pine from it for comparison with modern trees. ... >>

Poplar deciphered 09.01.2005

Specialists of the National Institute of Agronomic Research (France) reported on the complete reading of the poplar genome. American, Swedish and Canadian geneticists also participated in the work. The poplar was chosen as the first tree for deciphering, since its genome is relatively small - only 19 pairs of chromosomes, about 40 thousand genes (the pine genome, for example, is 50 times larger). The information obtained will help to understand how to increase the resistance of trees to drought and pests. ... >>

Thermal power plant on vegetable oil 08.01.2005

The Anglo-Belgian concern, with the participation of the German company Siemens, has commissioned a thermal power plant in the city of Bregenz (Austria), in the furnaces of which waste edible oil is burned, which remains after frying donuts, potato chips, popcorn and other products in fast food establishments. The power of the station, which consists of three blocks, is 3,4 megawatts. Excess heat is used to heat the neighboring quarters of the city. Since edible oil contains virtually no sulfur, the smoke from burning it is not as harmful as from burning fossil fuels. However, the cleaning filters installed at the CHPP ensure the elimination of nitrogen oxides and the appetizing smell of fried food, which, in too large doses, can cause dissatisfaction among the townspeople. ... >>

The computer fetters the imagination of the designer 07.01.2005

In many design bureaus, drawing boards have been replaced by computer monitors, and design engineers do not draw, but combine their designs from ready-made drawings of individual assemblies and parts stored in the computer's memory. Computer-aided design greatly speeds up and simplifies the work of an engineer, but, as an experiment conducted at the Technical University of Dresden (Germany) showed, in the early stages of design, work in the old fashioned way, with whatman paper, pencil and drawing pen, is preferable. 66 students, future engineers who can work with computer programs for design, were asked to design a barbecue grill. At the same time, 22 students were given only paper and preparations, another 22 had to draw their own sketches on a computer tablet using an electronic pencil, and a third group was armed with computers with the latest automatic design software. The results of the first two groups not only surpassed the successes of computer designers, but also ... >>

The pendant will protect from criminals 06.01.2005

Englishwoman Liz Williams, a designer by profession, after reading newspaper reports about street crime in London, has developed a device for protection that looks like a massive pendant. When meeting with a hooligan or a bandit, it is worth pulling out the ring - and the attacker is enveloped in a cloud of fine powder, which, upon contact with moisture, turns into bright red paint. The paint stays on the skin or clothes for 72 hours, despite attempts to wash it off. In addition, the pendant contains a radio beacon that starts beeping on the frequency of police radios and continues to do so for also 72 hours. ... >>

ancient multiplication table 05.01.2005

During excavations in the Chinese province of Yunnan, a wooden board with a multiplication table from the times of the Eastern Han Dynasty (25-220 AD) was found. The table begins with multiplication not by one, as it is now, but by nine. In total, about a hundred such tables were found, they contain laws, medical prescriptions, government documents and calendars. Earlier Chinese bamboo tablets are known with examples of multiplication of different numbers (XNUMXst century BC), but they are made in the form of lists, not tables. ... >>

The first wars in human history 04.01.2005

When did people start fighting among themselves? Archaeologists have studied the remains of ancient human settlements in the Oaxaca Valley (Mexico). Approximately 3600 years ago, nomads began to establish permanent settlements here with adobe huts. In the largest of the villages, there were more than a hundred inhabitants. As shown by carbon isotope dating, 200-300 years after the founding of these settlements, they began to be surrounded by high wooden fences. And two thousand years ago, many men who lived here began to wear metal helmets. Apparently, somewhere in this period, wars between people began. The Mexican finds support the theory of the American anthropologist Raymond Kelly, according to which nomadic hunter-gatherer societies had murders but no fights between large groups of people. When permanent settlements arose, relations between people changed, and the essence of conflicts also changed. The murder of one villager began to be seen as an attack on the entire village, for which ... >>

diamond watch 03.01.2005

The German company "GFD" by order of Swiss watchmakers began to make the most important parts of wristwatches from artificial diamonds. This is an escape wheel (a wheel, the teeth of which, touched by an anchor fork, allow the entire mechanism to gradually turn) and a balance hair - the thinnest spring that supports balance fluctuations. Diamond parts are strong, characterized by reduced friction and wear, and almost do not change dimensions with temperature changes. The company is silent about the manufacturing technology, indicating only that "no force is used in the process and no sawdust remains." Most likely, the details are cut from thin plates of synthetic diamond with a laser beam. ... >>

The stadium generates electricity 03.01.2005

An indoor stadium in the suburbs of Bern (Switzerland) is being turned into a solar power plant. Solar panels with a total capacity of 850 kilowatts are mounted on its roof. When they occupy the entire roof (its area is 12 square meters), the stadium's capacity will reach 1300 kilowatts, which will provide energy for about 300 single-family cottages or apartments. ... >>

Fern against arsenic 02.01.2005

It was found that the pteris ribbon fern is able to purify water from arsenic. Experiments conducted by American botanists showed that this plant extracts more than 98% of the arsenic contained in it per day, which makes the water suitable for drinking (according to WHO standards, arsenic content up to 0,01 milligrams per liter of water is considered harmless). The discovery is especially relevant for some areas of India and Africa, where well water contains arsenic compounds. ... >>

To the hospital - no tie 02.01.2005

A medical student who practiced at a large New York hospital noticed that a doctor's hanging tie, when examining a patient lying on a bed, sometimes touches the patient. The student became interested: could the ties of doctors (American doctors believe that one should be “at the parade” at work in order to inspire more confidence in patients) serve as carriers of nosocomial infections? Microbiological analysis of 42 ties of doctors and assistants showed that 20 of them had dangerous microorganisms on the surface, including Staphylococcus aureus, the causative agents of pneumonia. For control, they took 10 ties from the guards of the hospital - only one turned out to be contaminated with germs. The transmission of diseases through a tie is unlikely, but for patient safety it is best when the doctor is dressed in a gown that is tightly buttoned under the chin, the author of the study concluded. ... >>

Hydrogen scooter 01.01.2005

The Japanese firm "Honda" intends in 2006 to produce a small installation series of the FCX electric scooter, running on hydrogen. The gas is produced from methanol and is used not for explosive combustion in the cylinders of an internal combustion engine, but for generating electric current in fuel cells. The current rotates the electric motors built into the wheel hubs. The company does not provide details, but admits that in terms of consumer properties, a hydrogen scooter is still inferior to a gasoline one. The machines will be tested in Japan and California. Yamaha is also working on a similar model. A group of Swiss and Japanese engineers have created a miniature robot "Amouse" (Artificial Mouse, that is, an artificial mouse), which uses real mouse whisker hairs to navigate in the environment. They are attached to sensitive condenser microphones that convert the vibrations of the whiskers into electrical vibrations, and according to this information, the "brain" of the robot chooses the route of movement. In a later invention ... >>

Door to the world of dreams 01.01.2005

Swiss doctors from the University Hospital in Bern examined a 73-year-old woman who had suffered a stroke. The only thing that the disease affected was that the woman stopped having dreams, and before that she watched them every night, long and very interesting. Such cases have occurred before, but usually with some side effects (for example, the victim also lost the ability to recognize acquaintances in the face). A study on magnetic resonance imaging showed that part of the visual cortex in the right hemisphere of the brain was affected. Apparently, this area is responsible for the appearance of dreams. Another observation on a Swiss patient refutes, or at least casts doubt on the established theory, according to which dreams occur during moments of active movement of the eyeballs under the eyelids of the sleeping person. These movements were preserved in the patient after the stroke, but there were no dreams. However, about three months after the stroke, the woman's dreams reappeared, but they are rare and their intensity is reduced. How ... >>

Keychain - the lord of TVs 30.12.2004

A certain Mr. Altman, aged 47, came up with the TV-B-Gone keychain. "When I was with friends in a restaurant, instead of warm communication, we had to shout over the TV, which no one could turn off," he recalls. Now this novelty allows you to turn off TVs almost everywhere from airports to restaurants. By pressing one button, a program is launched to enumerate 200 infrared codes, which are used to turn on or off about 1000 of the existing TV models. Most TVs respond in 17 seconds, and it takes about a minute to go through the entire range of codes. The $15 TV-B-Gone keychain has already received hundreds of orders, according to the seller. ... >>

VCRs are fading away 28.12.2004

The era of video recorders is irreversibly fading into the past. One of the proofs of this is that Dixons, the largest specialized retail chain in the UK, has announced that from now on it will stop selling them altogether. Thus ends the era of devices that completely changed the nature of the relationship between television and viewers, stretching for a quarter of a century. Thanks to VCRs, people finally gained a breath of freedom and were able to freely leave their homes without fear of missing their favorite programs. Dixons' management expects to sell off stocks of what is becoming antique merchandise in its warehouses over the Christmas holidays. At the same time, the company notes that the demand for VCRs during the 90s was significantly reduced. No holy place is empty - VCR has been replaced by DVD. Users are attracted by its speed and unattainable image and sound quality for VCRs. ... >>

Four inches for players 25.12.2004

Samsung has announced its ambitious plans to take the lead in the small screen LCD market by 2006. As a secret weapon designed to provide the South Korean company with a warm place as a leader, a 4-inch display currently being created in Samsung laboratories, designed exclusively for portable players. The aspect ratio of the screen is 16:9, the device is capable of displaying 16,7 million colors. At the same time, the maximum display brightness is increased by 20% compared to mobile phone screens. ... >>

Wireless TV 23.12.2004

Wireless technologies are increasingly entering our lives. Wireless TVs are now being added to wireless peripherals and acoustics. Just such a TV was announced by LG. Apart from the lack of wires, the TV is a regular LCD TV with a diagonal of 15 inches. The package also includes a special docking station, to which all the wires are connected - for example, from a DVD player or any other video signal source. Accordingly, the docking station broadcasts the signal that the TV receives. The weight of the TV is only 4 kg, so even the fairer sex can carry it from room to room. ... >>

LCD TV with hard drive and DVD recorder 21.12.2004

Toshiba announced the release of a 17-inch LCD display with built-in hard drive and DVD burner. The capacity of the hard drive is 160 GB. It allows you to save 284 hours of video recorded at a bit rate of 1 Mbps. Model RD-17V1 weighs 8,4 kg. At the same time, the dimensions of the novelty are 430x364x250 mm. ... >>

LCD TVs are ready to push the plasma 20.12.2004

Sharp Corporation announced the creation of an LCD TV with the world's largest screen. Its diagonal is 65 inches (1,64 m). Apparently, the plasma panel market will have to face a new competitor. Sharp promises to sell a new model called Aquos at a price comparable to the cost of plasma panels. Sharp launched the world's first 14-inch LCD TV in 1988. In 2000, the company launched a 28-inch LCD TV, a 30-inch TV in November 2001, and a 37-inch TV in November 2002. The market for TVs with a diagonal of more than 40 inches quite recently belonged undividedly to the manufacturers of plasma panels. Sharp and Samsung Electronics were the first manufacturers to release LCD models larger than 40 inches. In August, Sharp announced a 45-inch LCD TV, and now a new 65-inch model is ready. Its screen size is 1428x804 mm, and the diagonal size is 1639 mm. The resolution of the new TV is 6 ... >>

SAMSUNG SDI launches 38cm thick CRT TV 18.12.2004

Samsung SDI has developed a 32-inch CRT monitor with a kinescope only 38 cm thick. At the moment, the CRT TV market niche is occupied by classic "boxes" with a thickness of 50 to 60 cm. The Samsung SDI display is only 10 cm thicker than a plasma panel. CRT TV will cost about $1000, the novelty has a high contrast - 5000:1 and brightness of 800 cd/m2, and power consumption is 190 watts. The future plans of the company include the creation of a TV with a thickness of 20 cm, but we will not know about this until 2006. ... >>

The counterfeiter's trap of the XNUMXst century 16.12.2004

American scientists have come up with a method by which you can identify which printer printed a counterfeit bill, passport or any other document. Previously, when computers had not yet appeared, and typewriters were in use, detectives could easily find out which typewriter a particular document was printed on and get on the trail of a criminal. The fact is that the letters on the hammers of each typewriter were erased differently and an "individual handwriting" arose. The advent of laser and inkjet printers, it would seem, forever buried this method of searching for intruders. In fact, what kind of individual handwriting can a powder that pours onto a sheet of paper have? It turns out it can. This conclusion was made by scientists from Purdue University, led by Professor Edward Delp, who were involved in correcting the print quality on laser printers: the stripes that inevitably occur during printing are individual for each printer and the cartridge inserted into it. "To know the handwriting precisely when ... >>

Post radio box 15.12.2004

The German firm Postin offers a mailbox alert system so that the tenant of an apartment on the top floor will instantly know that something has been thrown into the mailbox. A flat radio transmitter is glued on the inside of the box door, which reacts to each opening. It transmits a coded radio signal to a receiver that looks like an ordinary electronic clock and can be placed on a table or hung on a wall. When the postman opens the box door, the receiver emits a beep and a symbol appears on its screen - a flashing image of an envelope. The time of receipt of correspondence is also recorded. The radio signal reception range is approximately up to the seventh or eighth floor. The variety of codes used is so great that the signal cannot get to the receiver of another apartment by mistake. ... >>

Pneumothorax at the disco 12.12.2004

Pneumothorax is an operation used for certain pulmonary diseases in order to temporarily stop the respiratory movements of the diseased lung, to give it a rest. Air is introduced into the narrow gap (pleural cavity) surrounding the lung. As a result, the pressure difference between the pleural cavity and the interior of the lung disappears, and it stops moving, although the chest continues to expand and collapse. But recently, a group of Belgian doctors described four cases of pneumothorax that occurred spontaneously because of too loud music. Three young men were injured at a rock concert, a fourth was listening to too loud stereo music in the enclosed space of his car. According to doctors, low-frequency sounds are especially dangerous. They cause resonance in the internal organs. The lungs begin to vibrate, as a result, cracks can form in the surrounding tissues and air enters the pleural cavity through them. The authors of the study indicate that cases of spontaneous ... >>

Hydrogen record 10.12.2004

The world's first internal combustion engine was supposed to run on hydrogen. Christian Huygens in the 12th century proposed something like a steam engine, in the cylinder of which explosive gas would explode. As far as is known, the idea has never been tested in practice. However, now the German company BMW has designed a car based on this principle. Liquid hydrogen is stored in a tank with thermal insulation, slowly evaporates and in gaseous form is fed into a 2004-cylinder engine, where it mixes with air and explodes. In September 302,4, a unique car set a speed record for this (frankly, not numerous) class of crews - XNUMX kilometers per hour. In the future, the company intends to mass-produce "hybrid" cars with hydrogen and conventional gasoline tanks. ... >>

Translator for the language of touch 08.12.2004

The German company "ABTIM" has developed in cooperation with the University of Wuppertal a portable device that allows the blind to read. It consists of a miniature television camera, which is placed on a book, magazine or cell phone screen, and a computer unit. In this block, the image of letters, symbols or pictures is converted into signals that push 4 pegs out of the 4x256 cm panel, exactly repeating the outlines of the image received from the camera. Feeling the panel with his hand, the blind can read letters and symbols or "look" at pictures. While the device is quite large (the size of a solid book) and expensive. But engineers are working to improve it. In particular, the next version, instead of showing enlarged outlines of letters, will translate letters into Braille characters. ... >>

On the issue of transgenic products 05.12.2004

There is an ongoing debate in scientific labs and in the press about whether genetically modified foods are harmful to health. The first concrete data indicating that such products still have some unusual effect on the body were obtained by biologists from the University of Urbino (Italy). They fed a group of mice genetically modified soybeans, from plants genetically engineered to be immune to insect pests, while a control group received common soybeans. Then the experimenters studied the liver of mice - this organ is one of the first to react to the intake of harmful substances. It turned out that in those mice that received genetically modified soy, the nuclei in the liver cells acquired an irregular shape. In addition, the number of microfibrils in cells increased - microscopic fibers consisting of protein molecules. Both signs indicate an increase in metabolism in the liver, but what is the mechanism of this increase and how much ... >>

Weekend sickness 04.12.2004

Some of us get sick only during vacations or on weekends, but we don’t miss a single day of work due to illness. The Dutch psychologist Ad Wingerhuts became interested in this phenomenon. After interviewing 1893 people, he came to the conclusion that over three percent of the Dutch suffer from the so-called "free time syndrome": they get sick mainly on weekends or during holidays. Among the most common ailments are constant fatigue, muscle pain, flu and colds. Moreover, a cold appears mainly in the first week of vacation. According to the sufferers interviewed by the psychologist, the cause of the disease is the difficulty of switching the body from a working rhythm to rest. Apparently, the stress that comes when preparing for a vacation, when it is necessary to urgently settle both work and household affairs, also affects. Many of those who are sick in their free time take their work very seriously and do not know how to relax, although they spend no more time at work than those not affected by this syndrome. As a rule, they are not more often ... >>

Juggler - intellectual specialty 02.12.2004

Until now, scientists believed that the adult brain does not grow, and from a certain age even decreases due to aging. Researchers from the Universities of Regensburg and Jena (Germany) proved that this is not the case. The experimenters divided a group of 24 young men and women with a mean age of 22 into two equal subgroups. Members of one of them were taught to juggle for three months, the other did nothing. With the help of magnetic resonance imaging, the brain sizes of the subjects were compared before and after learning to juggle. It turned out that the trainees clearly increased the layer of gray matter (that is, neurons) in the left posterior sulcus in the cerebral cortex, located between the upper and lower lateral lobes of the brain. It is believed that this area perceives the movements of objects in three-dimensional space. In the control subgroup, which was not trained in juggling, such an increase in gray matter was not found. True, after the jugglers stopped training, they acquired additional ... >>

The TV is preparing to force the computer out of the apartment 30.11.2004

Manufacturers of computer equipment, cherishing exactly the opposite plans, run the risk of being very upset. The new standard, proposed Monday by members of the Consumer Electronics Association (CEA), calls for an interface that lets you control all your household utensils from a conventional TV screen. Unlike its predecessors, the standard, called CEA-2027, allows you to fully control any electronic device connected to your home local area network using the FireWire protocol (in the future, support for Ethernet networks may appear). Moreover, according to CNET, the functionality of the "server TV" depends primarily on the functionality of controlled devices and, therefore, can be expanded as more and more advanced electronic toys are purchased, such as digital recorders and smart coffee makers. ... >>

Recorder XORO HSD-R545 - heavy artillery DVD 29.11.2004

Recently, DVD recorders have begun to attract the attention of amateurs. The relatively low cost of these devices, the relative cheapness of recordable and rewritable discs, coupled with their high capacity, the emerging trend towards multiformat among the main manufacturers gives such recorders real chances to fill the vacancy that appears in connection with the abandonment of VHS video recorders. The Xoro HSD R545 recorder, introduced by the company in the summer of 2004, is equipped with a built-in TV tuner and allows you to record video from various sources to DVD+R/RW discs at home. The Xoro trademark belongs to MAS Elektronik AG (Germany). ... >>

LCD TVs with the ability to record to external network drives 28.11.2004

Toshiba has planned to release 32" and 37" LCD TVs that will support a host of features that are still more typical of a computer. For example, for the first time it will be possible to record programs (and, accordingly, subsequent playback) on an external hard drive connected to a home network. In addition, recording is also provided on SD memory cards in MPEG-4 format, the ability to interact with digital cameras and surfing websites, which can be organized in a separate window without interrupting TV viewing. You can connect a keyboard to the USB port. The implementation of all these and many other features is not surprising, given the use of an embedded Linux variant. Naturally, there is also a processor, which is only known to be 64-bit. Toshiba called its intelligent control system for the many functions of the TV "meta brain". As for "direct duties", it goes without saying for Japan once ... >>

SAMSUNG prepares 0,85-inch hard drives, TOSHIBA plans to produce them 27.11.2004

By the end of the year, Toshiba plans to begin mass production of its 0,85-inch hard drives, however, the company has not yet finally decided on the storage capacity - whether these will be 2 or 3 Gbit drives. Recall that 0,85-inch drives were presented by the company in December last year, and the start of mass production was planned for 2005. Devices are positioned for the same equipment as 1,8-inch HDDs: portable audio players, mobile phones. Toshiba's competition in the market of miniature disks can be made by Samsung, which also announced plans to introduce its own devices of this standard size. R&D is currently underway in this area, so there is no information on the readiness of final products yet. The opinion of analysts regarding the sector of miniature hard drives is interesting: according to IDC, cell phones of the future will have to be able to store up to 4 GB of data, where, of course, I can ... >>

Internet comes to TVs 25.11.2004

Norwegian company Opera Software is preparing to release a new web rendering technology specifically designed for TVs. Thanks to TV Rendering technology, websites will look perfectly clear on any TV screen. As you know, websites are usually optimized to be displayed on high resolution monitors: for example, 1024x768, 800x600 or 640x480, while a regular TV screen has far fewer pixels, so when displayed on a TV screen, colors are distorted and text can be unreadable. . The new technology TV Rendering (TVR), developed by Opera, is able to eliminate all these shortcomings. ... >>

Sony to release zoom TV 24.11.2004

Sony Corporation has developed a computer chip that allows you to zoom in on any part of the television picture to see in more detail, for example, your favorite football player or named guest on a surveillance camera recording without losing image clarity. The zoom feature is implemented in a new line of Sony TVs, which will go on sale in the US this month, and in Japan - in November this year. However, in order to use the new chip, it is not at all necessary to buy a new TV - you can purchase a separate set-top box that allows you not only to enlarge the picture, but also to improve the quality of a regular television signal, endowing it with high definition. The developers noted that although the set-top box with the implemented zoom function can be sold separately, the date of its release to the market and the price have not yet been determined. The new technology is called Digital Reality Creation Multifunction v2. It was demonstrated in Tokyo on September 8 on a regular TV from ... >>

Step to desktop accelerator 23.11.2004

British and American physicists have managed to accelerate electrons almost to the speed of light, and the length of the accelerator was a fraction of a millimeter. "Our work shows that sooner or later a scientist will not need multi-kilometer accelerators of international centers like CERN to study high-energy physics. The laser accelerator will be located in a university laboratory," says Professor Karl Krushelnik from King's College London. But the fact is that the team of scientists headed by him from London, Strathclyd and Los Angeles managed to accelerate electrons up to 70 MeV using a terawatt femtosecond laser, and this happened at a distance of only 0,6 mm. The idea of ​​such an accelerator is not new: it was proposed in 1979 by Toshi Tajima and John Dawson. The gas in a powerful focused laser beam is ionized, turns into a plasma, and a wave can appear in it, which moves at a speed close to the speed of light. The strength of the electric field in such a wave is a hundred times greater than in ... >>

Glass softens from weak laser light 20.11.2004

American scientists have discovered a strange effect: very small changes in the power of an ultra-weak laser can greatly change the hardness of germanium-selenium glass. “It all started when my graduate student Yared Gump, who measured the hardness of the GeSe system glasses, began to bring me data every day that differed greatly,” says the head of the work, Ohio University professor Ratnasingham Suryakumar. “After a while, we guessed what these changes represent is an objective reality." This glass, an alloy of 80% Ge and 20% Se, is a very interesting material used in electronics. Germanium is hard and selenium is soft. The proportion of 4:1 corresponds to the critical point - such a substance is no longer hard, but also not soft. To understand the reason for the change in properties, scientists examine hardness. And they do this by measuring the speed of sound - in a solid it is greater than in a soft one. And it is here that a beam of a super-weak laser appears on the stage, as thin as a hair. ... >>

Underwater photo will become clear 19.11.2004

Scientists from Israel have created software that will allow you to take very clear underwater photographs. "Even in crystal clear water, it is impossible to take a clear photograph - it will always have a veil from scattered light," says Professor Iov Shekhner from the Technion-Israel Institute of Technology. "PhD student Nir Karpel and I found a way to remove this veil." Scientists used a conventional polarizing filter costing 20-100 dollars and software: a specially developed algorithm calculates those distortions in the image taken through this filter that led to the appearance of a veil. Unlike common image enhancement programs that work with the image as a whole, the one created by Israeli scientists calculates the distance to the objects that are in the frame and makes its own adjustments for each of them. "Our program can be easily embedded into a microchip and built into a camera or video camera," says Prof. Schechner. ... >>

Glass in cosmetics 18.11.2004

The German concern "Schott", known mainly for its optical glass and glass laboratory glassware, has launched the production of so-called biologically active glass, designed for use in cosmetics. This glass is a fine powder of silicon, sodium, calcium and phosphorus oxides of high purity, taken in certain proportions. To obtain bioactive glass, the components are mixed and melted, then the thinnest petals are formed from the melt, which are ground. The result is a silky to the touch powder with particles a few microns in diameter. It is not yet clear why, but, according to manufacturers, tested in foreign laboratories, this powder kills bacteria and relieves inflammation. Creams, deodorants, eye shadows and lipstick with glass will hit the market this year. In addition, as you might expect, the fine powder promotes the absorption of minerals by the skin and other human tissues, which is why it has already begun to be added to toothpaste. ... >>

Leonardo - inventor of plastics 17.11.2004

According to Alessandro Vedzossi, director of the Leonardo da Vinci Museum, the great Italian was the inventor of the first plastics. Studying his workbooks, Vedzossi discovered recipes for some mysterious concoctions, consisting mainly of vegetable and animal glues. According to Leonardo's commentary, these mixtures, when solidified, form a material from which one can make very durable knife handles, chessboards, cups, vases, and even women's jewelry - pendants, bracelets. Vedzossi tested one recipe and got a material resembling Bakelite in properties - one of the first synthetic polymers, widespread until about the middle of the last century. ... >>

Green CD 15.11.2004

The Japanese firms Sanio and Mitsui have developed a process for the production of CDs based on a lactic acid polymer derived from corn. The "corn" disk is in no way inferior to ordinary ones, but does not require non-renewable raw materials - oil - for the manufacture. In addition, after getting into a landfill, such a disc is relatively quickly decomposed by fungi and microbes. One disc takes 85 corn kernels. ... >>

water croquette 13.11.2004

A curious physical effect was demonstrated by employees of the University of Arizona (USA). They placed water droplets on a water-repellent surface created by growing a "lawn" from silicon "blades" of 20 to 50 nanometers in diameter on a silicon wafer. On such a surface, the droplet gathers into an almost perfect ball. Silicon "blades of grass" were dressed with a light-sensitive water-repellent compound spiropyran, which becomes hygroscopic under the influence of ultraviolet light. If we now direct a narrow beam of an ultraviolet laser at the area of ​​the coating in front of the water droplet, this spot will begin to attract water, and the droplet will move towards it. By moving the beam, you can drive the water ball along trajectories of any complexity. The new effect will be useful when creating micropumps for ultra-small volumes of various aqueous solutions. For example, a microchip laboratory is being designed that will be able to carry out up to 30 different tests on one drop of blood, saving the patient from giving ... >>

Reconstructed the navel of the earth 12.11.2004

Where is the "navel of the earth"? It turns out that this is not an idiom, but a real point in the Greek city of Delphi. According to the myth, Zeus, wishing to know where the center of the world is, released two eagles to the east and west. Where they met is the "navel of the earth." The Greeks marked this place with a cone-shaped marble stone weighing about a ton, which is now located near the destroyed by an earthquake in 373 BC. Physicists from the University of Cagliari (Italy) used the magnetic characteristics of minerals to estimate the temperature of a cloud of volcanic ash and stones ejected by Vesuvius during the famous 79 AD eruption that killed the city of Pompeii. Minerals are formed from a melt, acquiring magnetization from the Earth's magnetic field upon cooling. If subsequently they were heated, this magnetization changed or completely disappeared. Therefore, by measuring the magnetic properties of the cobblestones and ash ejected by the volcano, it is possible to determine what temperature these fragments experienced. Proanali ... >>

Computer access under control 11.11.2004

To prevent the databases of the Criminal Investigation and other intelligence agencies from being sold openly, as is the case in some countries, 160 senior Mexican law enforcement officials, including the Attorney General, received special implants. A microcircuit the size of a grain of rice, planted under the skin of the wrist, responds to a radio signal sent by a special sensor in the office computer's keyboard and tells the computer the user's individual number. So access to official information on criminals from the database of the Ministry of Justice is received only by those who are allowed to do so. Moreover, the computer registers who requested what data, and in case of leakage, the culprit will be found. ... >>

Water armor for cars 10.11.2004

Armored vehicles, designed to protect VIPs, are forced to carry many hundredweights of heavy armor even on empty flights. Norwegian engineers have patented the idea of ​​building flat tanks made of aluminum and carbon fiber into car doors and filling these tanks with water before a dangerous trip, which dampens bullet energy well. When the armor is not needed, the water descends. Even without water, the composite material of the tanks provides some protection from bullets. ... >>

anti-terrorist chair 08.11.2004

The American firm "Ekko Design" has designed an office chair that will help to survive a terrorist attack on the building where the office is located, as well as in the event of an explosion, fire or earthquake. A fire-protective jacket with a respirator and a helmet, a first aid kit, a sharp knife and a cable are hidden in the back of the chair. A radio beacon is built into the jacket, which facilitates the search for a person under the rubble, there is also a miniature radio receiver. The back itself is mounted on one of the armrests and turns into a shovel for clearing debris. The other armrest can serve as a curved crowbar for opening jammed doors and moving various obstacles. Only a leg with wheels, oddly enough, did not find any emergency use. ... >>

How did the tyrannosaurus grow 07.11.2004

An adult tyrannosaurus lizard weighed about five tons. If it grew at the same rate as modern reptiles like crocodiles, it would take 100 years to reach that weight. However, as American paleontologists calculated from the rings on the cuts of fossil bones, teenage tyrannosaurs had a period of very rapid growth between the ages of 14 and 18 years. At this time, the young lizard was gaining more than two kilograms in weight daily, which corresponds to the growth rate of young elephants. By the age of 18, the Tyrannosaurus reached 70% of the weight of an adult and then grew slowly. The oldest lizard ever studied by the Americans lived to be 28 years old. ... >>

warm windows 06.11.2004

Heat-reflecting coatings for glass have been known for a long time and are often used in the windows of south-facing buildings. In hot weather, they reject the infrared rays of the Sun, maintaining an acceptable temperature in the rooms. But, unfortunately, in winter, when heating by the sun's rays would not hurt, these glasses continue to reflect heat. This is not how a new glass coating developed by English chemists from University College London and the University of Liverpool behaves. Several decades ago, scientists discovered that vanadium dioxide, which transmits infrared rays at ordinary temperatures, becomes opaque to these rays if it is heated above 68 degrees Celsius. English chemists, by adding traces of tungsten to vanadium dioxide, were able to reduce the transition temperature to 29 degrees Celsius. When newly coated glass is heated to this temperature, it begins to reflect heat rays. In the meantime, the temperature of the glass is lower, it passes them and heats the room. P ... >>

If aliens exist, we will know about them in the next 20 years 04.11.2004

This is the opinion of Seth Shostak, astronomer, senior researcher at the Institute of Extraterrestrial Civilizations (USA). He tried to estimate the possible number of civilizations capable of transmitting radio signals in our Galaxy and came to the conclusion that there could be from 10 thousand to a million. There are about 100 billion stars in the galaxy. Shostak figured out how quickly, with existing and under construction radio telescopes, we could listen to their surroundings and how quickly our computers would be able to analyze the received radio signals and identify suspicious ones among them. At the same time, he proceeded from the assumption that the computing power of computers will double every 2015 months until 18, as has been the case for the past 40 years, and then its growth will slow down and doubling will occur only every 36 months. In this case, it will be possible to complete the "examination" of the Galaxy in search of radio signals of artificial origin in 20 years. However, not all experts agree with these calculations. He ... >>

Radioactivity of mineral water 02.11.2004

Chemists from the University of Veszprem (Hungary) measured the radioactivity of some brands of Hungarian mineral waters. It turned out that three of the 18 varieties of mineral waters sold in stores contained fairly high concentrations of radium-226. Regular consumption of this water can exceed the safety limit recommended by the World Health Organization. A person who drinks at least a liter of such water per day can receive a dose of one hundred microsieverts per year. The initiator of the study, Tibor Kovacs, says that radioactive water is especially dangerous for children aged 12-17, since at this time their bones are actively growing, which radium harms. Previous studies have shown that some mineral waters from Austria, Germany, France and Portugal also contain high levels of naturally occurring radionuclides. ... >>

Ultrasonic lenses 01.11.2004

This seems to be a trick of a magician: a disk of transparent material, enclosed in a metal frame, suddenly, while maintaining the plane-parallel sides, turns into a collecting or diverging lens. The secret of flat lenses developed in one of the laboratories of Triton Systems (USA) lies in ultrasound. Piezoelectric ultrasound emitters are enclosed in a frame around a transparent silicon rubber disk. Passing through the rubber, ultrasound waves either slightly push the molecules apart, or compress them, making the material either more rarefied or denser. Dense areas refract light more. The frequency and phase of the emitters in the frame on the sides of the disk can be chosen such that due to the interference of waves in the center of the disk, a stable region with a reduced density is formed, and hence with a reduced refractive index of light. A flat transparent disk turns into a diverging lens. So far, the successes of researchers are small - only the central zone transversely changes its optical properties. ... >>

Controlling plasmons 29.10.2004

Scientists from the UK and Spain have found a way to control the movement of light in the optical computers of the future. In a microcircuit, electrons move between transistors along conductors. It is logical to assume that in an optical scheme, light must travel along an optical fiber. Yes, that's bad luck, its diameter - fifty microns - exceeds the size of a modern microcircuit, not to mention the elements applied to it. A possible way out is suggested by a theoretical study undertaken by scientists from King's College London and the Universities of Madrid and Zaragoza. They found a way to control the movement of surface plasmons. These quasiparticles, discovered by Rufus Ritchie in the 1950s, are something like an excited electron cloud. They arise at the moment when the surface of a substance absorbs a quantum of light. Their behavior, reminiscent of the waves of an electron sea, has long been the subject of the game of the mind of theoretical physicists. And now it turned out that the behavior of plasmons can be controlled ... >>

Home warmth - almost for free 26.10.2004

In just one day, American defense workers assembled a two-story cottage, the heating and cooling of which will cost 45 cents a day. Scientists from the Oak Ridge National Laboratory of the US Department of Energy have developed a project for a house with almost zero energy consumption and even put it into practice in the form of a two-story cottage for a resident of Lenoir City, Tennessee. The house has taken all measures to protect the premises from uncontrolled heat and air exchange with the environment, as well as to utilize free energy such as Earth's heat or solar radiation. The first floor of the house and the foundation are built from ready-made concrete blocks with thermal insulation, the second floor - from heat-insulating panels. In addition, the roof and walls are painted with "cold" paint, which reflects infrared rays, protecting the house from overheating. For heating, a water heater is used, built on the principle of a heat pump; in it, heat is transferred from a cold volume to a warmer one due to ... >>

Insect Camera 25.10.2004

German engineers have created a camera with a thickness of 400 microns. What if we put more than one lens into the camera, as in the human eye, but copy the structure of the insect eye and use many small lenses? Thinking this way, the staff of the Fraunhofer Institute for Applied Optics and Precision Engineering created a faceted camera with a thickness of only 400 microns. Each photosensitive element is equipped with its own microlens. The great advantage of the camera is that the field of view is not limited to a small lens diameter, but is distributed over a large area. Just like the compound eye of an insect, this camera does not provide a sharp image, but it can be useful for solving problems related to pattern recognition. And there are many applications. For example, a plate camera attached to the dashboard of a car and connected to an on-board computer: it monitors where the driver’s eyes are directed, and if he looks away for too long, he warns of a dangerous situation with a sharp signal. ... >>

Watches on belts instead of gears 23.10.2004

The Swiss watch company "Tag-Heuer", having spent 20 months on research, developed the world's first wristwatch on drive belts. The mechanism uses 13 polymer toothed drive belts half a millimeter wide. According to the company, such a mechanism, compared with a conventional gear transmission, can significantly reduce energy losses due to friction. Yet without a few gears in the clock could not do. They do not rely on ordinary stones, but on subminiature ball bearings. The automatic winding is powered by a 4,25-gram platinum ingot, which moves back and forth with the movements of the wrist and, with its serrated side, winds four springs through the straps. To make all this machinery visible, the dial is kept to a minimum, and the back of the watch is made transparent. ... >>

Portable tomograph for rats 21.10.2004

The rat is too mobile an animal to be able to study the work of its brain with the help of a tomograph. It is impossible to apply rigid fixation or immobilizing chemicals: the picture of brain activity will be distorted. Therefore, a portable positron emission tomograph for rats was made at the Brookhaven National Laboratory (USA). The "collar" contains radiation detectors. The rat is injected with radiolabeled glucose into the blood, and sensors determine which areas of the brain use this energy source when the animals perform various tasks. ... >>

Take a photo before the explosion 18.10.2004

To neutralize bombs planted by terrorists, suspicious mail, or packages forgotten in a public place, which may also contain a bomb, sapper robots are often used. The robot shoots a suspicious object with a powerful jet of water or even blows it up. In any case, the police can only hope that they will be able to pick up fragments of an explosive device on which there will be fingerprints, which would greatly facilitate the investigation. Engineers from the University of Calgary (Canada) proposed to add a device for developing fingerprints to a demining robot. The prints are made up of traces of fat and amino acids secreted by the skin. Cyanoacrylate reacts with these compounds - the very substance that instant glue consists of, and the prints become visible. The robot is equipped with a vessel with liquid cyanoacrylate. The vessel is heated by an electric spiral to 65 degrees Celsius, and the cyanoacrylate evaporates and its vapors are directed by a fan from the nozzles ... >>

nitrogen diamond 17.10.2004

A group of scientists led by Mikhail Yeremets from the Max Planck Institute of Chemistry (Germany) obtained the polymer nitrogen predicted about ten years ago. Enclosing nitrogen in a microscopic diamond chamber with a piston, they subjected it to a pressure of a million atmospheres, while heating it with a laser to 1725 degrees Celsius. The nitrogen sample turned into a transparent crystal. X-ray diffraction analysis showed that this is polymeric nitrogen, similar both in appearance and in molecular structure to diamond. ... >>

Metals in champagne 15.10.2004

A reliable way to distinguish real champagne from Soviet champagne has been found: the composition of trace metals in Champagne wine is unique. Spanish chemists from the University of Seville measured microdoses of 16 metals in 18 samples of sparkling white wines from Spain and 17 samples of real champagne using atomic spectroscopy. It turned out that the samples clearly differ in the composition of these trace elements passing into wine from the local soil. So, real champagne contains twice as much zinc and half as much strontium as Spanish wines. The analysis distinguishes between the surrogate and the original with XNUMX% accuracy. ... >>

Underwater lumberjack 13.10.2004

The Canadian company Triton has built a remote-controlled submarine designed to collect trees flooded in hydroelectric reservoirs. According to experts, there will be about 200 million such trees around the world. Wood that has been soaked in water for a long enough time acquires a special value. The boat, named "Sawfish", dives to a depth of 30 meters. A chain saw is mounted on her nose. The operator, sitting on the escort barge, controls the boat by wire, using a picture from eight television cameras, and in muddy waters, from sonar. An inflatable rubber bag with a lifting force of about 230 kilograms is attached to the sawn trunk, which is enough to lift a tree 23 meters high and one meter in diameter at the base. A tree that has stood under water for 60-70 years dries up in the summer in the sun for two weeks, and especially large specimens are dried in a high-frequency installation. ... >>

Winter is the season of volcanoes 12.10.2004

Geophysicists at the University of Cambridge (England) analyzed data on the start time of 3200 volcanic eruptions that occurred from 1700 to 1999. It turned out that during this long period in the Northern Hemisphere in winter (November - March), eruptions occurred 18 percent more often than in summer. This effect is especially pronounced along the margins of the Pacific Ocean - in the Andes, Central America and Kamchatka. It is also observed on individual volcanoes. For example, the Japanese volcano Sakurajima most often wakes up in November. Scientists believe that the matter is in the water cycle. In winter, the earth's crust in the Northern Hemisphere sags slightly under the weight of ice, snow, and rainwater, making volcanic activity more likely. So, the Japanese islands in winter sink deeper into the ocean by 2-3 centimeters. ... >>

Can pinch bacteria 09.10.2004

Ted Hubbard, an engineer at the University of Halifax (Canada), has made microelectronics microscopic silicon tweezers that can grab cells, including bacteria up to several microns in size. The tweezers are equipped with a dynamometer, which allows you to determine the force with which it compresses the cell. By measuring the elasticity of the cell with one pinch, you can assess its condition. ... >>

Seasickness indicator 07.10.2004

Putting another indicator on the dashboard of a car is recommended by Dutch inventor Jelte Bos. He developed a small device that warned the driver that with this style of driving, his passengers, especially children, would soon get sick. Three accelerometers register accelerations along three spatial axes, and a microcomputer analyzes the results and displays on the screen the percentage of people who will react painfully to one or another driver's maneuver. However, only a prototype is equipped with such an informatively rich display, and the serial version of the device will have only three LEDs - green, yellow and red, signaling the degree of danger of seasickness in the car. ... >>

Hangover cactus, taken orally 05.10.2004

As American doctors have proven, an extract from prickly pear cactus, which is common even in homes, significantly alleviates the symptoms of a hangover. The experiments were carried out according to all the rules at the University of New Orleans, they were attended by 64 students aged 20 to 30 years. Volunteers received a capsule with prickly pear extract or a neutral substance, then after three hours they were offered lunch and two hours later - plentiful portions of alcoholic beverages. The next morning, it turned out that those who received the cactus extract suffered less hangover symptoms such as dry mouth, lack of appetite and nausea. In addition, they had less of the stress hormone - cortisol and a protein in their blood, indicating inflammatory processes in the body. True, symptoms such as headache or dizziness are not relieved by a cactus. One US pharmaceutical company has already launched this hangover cure. ... >>

Eurohummingbirds are early birds 04.10.2004

Two fossils of the most ancient hummingbirds have been found in a clay quarry in southwestern Germany. Their age is estimated at 30-34 million years. Until now, the oldest specimens of hummingbirds were considered to be "only" a million years old, found in a cave in Central America. Now there are more than three hundred species of these small birds with a long beak adapted for sucking nectar from tubular flowers. Modern hummingbirds live only in America. Therefore, the European find fully deserved the scientific name "Eurohummingbird unexpected." ... >>

sounding wall 02.10.2004

The German chemical company Bayer, together with the electrical engineering company Siemens, has developed a composite polyurethane foam material, on the basis of which sound panels with a thickness of 7 millimeters are made, built directly into the walls of any room. The panels transmit sound vibrations from a coil glued to it, such as a conventional speaker head. The room is no longer cluttered with bulky stereo speakers. The sound becomes richer and full surround effect is achieved. True, it is undesirable to hang carpets or paintings on a sounding wall. ... >>

Samsung has released the first mobile phone with a hard drive 28.09.2004

Samsung has introduced the world's first mobile phone in Japan with a built-in 1,5 GB hard drive. Samsung has made an important new step towards further improvement of mobile phones by placing for the first time in the world a miniature one-inch hard drive with a capacity of 5400 GB in a mass-produced mobile phone model SPH-V1,5. Despite the fact that such a step was predicted by experts for a long time, a number of technical problems still did not allow starting mass production of phones with "hard drives". The SPH-V5400 is equipped with a miniature built-in 1,5 GB 320-inch hard drive. The clamshell model is equipped with a megapixel camera, an internal LCD display with a resolution of 240x128 pixels and an external resolution of 128x3 pixels, made using OLED technology. Additional phone features include an MPXNUMX player and an electronic dictionary. The South Korean company said that the powerful built-in microphone improves ... >>

Home theater system with automatic speaker setup 25.09.2004

The Japanese company Yamaha announced at the beginning of September an inexpensive (about $400) home theater set DVX-S150. The system includes an AV receiver/player, a front pair of speakers (two 50 mm speakers, 100 Hz...25 kHz), rear satellites, a subwoofer (160 mm LF driver, 30 Hz...200 Hz) and a center speaker. The main unit of the system supports playback of DVD+R/RW, CD-R/RW, MP3, JPEG, and Dolby Digital 5.1, DTS, Dolby ProLogic II audio standards. The power of the built-in amplifier is 225 W (45 Wx5 channels). In addition, the DVD receiver is equipped with the YPAO function, automatic speaker setup for the environment. It is produced using a highly sensitive microphone, which is installed in the place where the viewer is supposed to be. The back of the receiver has D2, S-Video and two composite inputs, as well as optical, analog and bass audio outputs. ... >>

XNUMXD echography 24.09.2004

Scientists from the University of Navarra are improving a technique for obtaining three-dimensional images of babies in the womb using ultrasound. Three-dimensional ultrasound echography is the latest method of ultrasound examination, which is already used by doctors in the clinic of the University of Navarra (Spain), equipped with the most advanced equipment. It allows you to get a detailed image of any object inside the human body, such as a baby in the womb, and one image takes several seconds, and the entire study takes no more than fifteen minutes. With the help of a series of images, future parents can not only see the features of the child from different angles, but also see how he moves. According to some experts, such "acquaintance" strengthens the bond between parents and children. Well, doctors have received a powerful device that allows you to monitor the development of the fetus. They will now notice developmental disorders of the face or spine in time, and as soon as possible they will be able to offer ... >>

Smart t-shirt 23.09.2004

A British student came up with a T-shirt that monitors the health of an athlete. I thought for a long time that it would be a good idea to monitor the health of an athlete directly during the game, but when in 2003 Cameroon midfielder Mark Vivien Foumer was on the field from a heart attack, I decided to take it seriously, "says David Evans from Northumbria University. The result is a "smart" T-shirt. An ECG sensor is attached to it, which captures the electrical activity of the heart and sends data through a micro-radio transmitter sewn to the hem of the T-shirt to the trainer's computer. Sweat sensors based on silica gel tourniquets stretch along the athlete's back. And another one is hidden in the sleeve sensor - it receives a radio signal from the coach and with a slight vibration informs the player: look at the team bench, they want to tell you something.Having information about the work of the heart, especially about its violations, the coach and doctors can understand in time that the player is tired and it is time to replace him .Decreased perspiration ... >>

Solar rooftops of the British Isles 19.09.2004

To promote new energy, British scientists have built several houses with solar panels on the roofs. Through a project funded by the UK Department of Trade and Industry, Dr Abu-Bakr Bahaj from the University of Southampton has fitted nine new homes with solar panels. During the day, they provided the main part of the electricity, and additional power was supplied from the city network. As it turned out, if you use 80% of solar electricity, you can save 132 pounds per year of those 250-500 pounds that the British pay for electricity. True, for this, the inhabitants of the experimental houses had to change their lifestyle somewhat: turn on such energy-hungry appliances as a washing machine and dishwasher at the height of the day. "Energy bills are a constant headache, especially for the poor," says Dr. Bahaj. ... >>

Associated gas will burn profitably 17.09.2004

Engineers from North Dakota want to use gas microelectric turbines in oil fields. Associated gas, which, together with oil, flies out of the well, is by no means always used. Either the quality is not very good, or the quantity is not enough - it is unprofitable to build a gas pipeline to the nearest plant, or something else. In general, most oilmen burn this gas, polluting the environment and contributing to the greenhouse effect without any benefit to humanity. "We believe that by installing microelectric turbines in the mines, it will be possible to both generate electricity and reduce emissions of harmful substances by three-quarters," says John Harju from the Center for Energy and Environmental Studies at the University of North Dakota. Now the center's engineers have begun testing such turbines in their state's oil fields. The microturbine is specially designed for gas with a high sulfur content, up to 1,5% (this is the gas that comes from the Dakota subsoil); its power is 30 kW. This is quite enough to provide electricity ... >>

coal foam 16.09.2004

By heating carbon to 10000 degrees Celsius with a laser, a group of Greek, Russian and Australian physicists working at the University of Canberra (Australia) obtained the fifth modification of carbon. As a result of heating in vacuum, a carbon foam was obtained, which, unlike the four previously known modifications (graphite, diamond, fullerenes and nanotubes), has magnetic properties. In addition, carbon foam exhibits the properties of a semiconductor and has an extremely low density: only two milligrams per cubic centimeter. This is about 750 times less than the density of hard coal. ... >>

Ears need noise 13.09.2004

Hearing needs constant training to stay in shape, and those who live in constant silence are as deafened as workers in a forge and press shop. German researchers came to this conclusion. A group of physiologists led by Gerald Fleischer from the University of Giessen (Germany) measured the hearing acuity of more than 10 thousand people around the world over several years. At the same time, the noise level of their environment was also recorded. As expected, people exposed to extremely loud noises at work, such as construction workers, have reduced hearing. But the inhabitants of the quiet countryside are just as deaf. It turned out that, in general, urban residents have better hearing than residents of quiet villages. People in professions such as orchestra musicians and pilots, despite the constant noise during working hours, have unexpectedly sensitive hearing. Fleischer believes that it is not constant noise that is harmful to the delicate mechanism of the inner ear, but shock loads - individual very loud sounds. On the contrary, stay ... >>

Bloodhound Mouse 12.09.2004

Biologists from the University of Florida in Tallahassee (USA) have bred a breed of mice, the sense of smell in which is significantly enhanced compared to ordinary mice. Oddly enough, for this it was not necessary to add a gene to mice, but to eliminate one of the existing ones. The knocked-out gene produces a protein called Kv1.3, which is involved in the formation of "valves" in the nerve cell membrane that control the flow of potassium ions in and out of the cell. And the rate of flow of potassium ions depends on how quickly and actively the nerve cell reacts to stimuli. The Kv1.3 protein is present in the cells of the olfactory bulbs, and the scientists thought that turning off its gene would lead to a weakening of the mouse's sense of smell. But it turned out that the sense of smell, on the contrary, is enhanced by 1000-10000 times. No other anomalies have been found in the new breed of rodents. ... >>

With the mouse at the ready 11.09.2004

Those who work a lot with a computer mouse often complain of numbness in their fingers and pain in their right wrist. To save computer scientists from discomfort, specialists from the Faculty of Mechanical Engineering at the University of Iowa (USA) offered a mouse that resembles a pistol in shape. When working, it is kept on weight. ... >>

The light went out - the air became cleaner 09.09.2004

On August 2003, 50, as a result of a major power failure (a short circuit on a high-voltage line due to tree branches touching it), 2004 million residents of Canada and the United States lost electricity for almost a day. The cascade of blackouts resulted in the shutdown of the generators of more than a hundred power plants, mostly thermal ones. The accident also had unexpected good consequences: the air became cleaner. Meteorologist Russell Dickinson and his staff flew the aircraft through the center of the accident shortly before power was restored. In the spring of 2002, the report of this group was published. Air samples taken from the plane showed about the same amount of pollution associated with car exhaust as on the same hot August day in 90. But the content of sulfur dioxide in the air fell by 50%, ozone by about 40% (poisonous ozone is formed during the photochemical reaction of air pollution with oxygen), and visibility increased by XNUMX kilometers. In general, during the stop ... >>

electric bullets 07.09.2004

I remember sailors from the Nautilus shooting sea monsters with electric bullets, which were miniature Leyden jars. A similar, but not lethal, ammunition was developed by the American company Teknosis. Electric bullets are intended mainly for the police and will replace rubber bullets, which often cause quite serious injuries. Under the rubber shell of an electric bullet is a piezoceramic core. When hitting a target, a bullet develops a short-term electric discharge of 50-250 kilovolts, which immobilizes the attacker for several tens of seconds. During this time, the police manages to twist him. Shooting is effective at a distance of up to one hundred meters. Industrial production of electric bullets should begin in the spring of 2005. ... >>

Microbes and nuggets 05.09.2004

A characteristic picture of many gold deposits: gold occurs in the form of the smallest particles scattered in the main rock, and in some places more or less large flakes and even nuggets come across. Australian geologists have studied one of these deposits in New South Wales and concluded that the flakes and nuggets of gold are created by microbes. On the surface of gold flakes, formations similar to bubbles are often visible under a microscope. Sensitive analysis made it possible to find traces of bacterial DNA in them. Taking fungi and bacteria from a gold mine, geologists placed them in solutions of gold compounds. On the surface of the colonies of microorganisms, the deposition of atomic layers of gold began, repeating the shape of the colony. This is the beginning of the formation of a nugget. The process is very slow, and the appearance of large nuggets weighing hundreds of grams and kilograms took, apparently, millions of years. Knowing which types of microorganisms concentrate gold, geologists will be able to discover new ones by their presence in the soil. ... >>

Electricity from wheels 03.09.2004

Until now, there were only two ways to power a bicycle headlight and brake light: either from a dynamo pressed against a wheel tire, or from a battery. The Japanese company "TOP" has proposed a new method. 14 permanent magnets are fixed on the spokes of the front wheel of the bicycle, and induction coils are on the fork. Passing by the coils, the magnets excite an electric current in them, the energy accumulates in capacitors and is fed to the headlight (it has three white LEDs instead of a light bulb) and to the rear brake light, where the red LED works. The benefits of the new solution are clear. The number of moving parts is kept to a minimum. The corrugated head of the dynamo does not rub the tire bead. LEDs are characterized by long life and low power consumption. ... >>

Fishing lantern 02.09.2004

A simple invention of two American fishing enthusiasts, patented in 1993, will not find a manufacturer or investor. The device that exists in one copy is a gas lantern placed on a round float. The device is anchored in the evening in a pond, the lamp is lit. Bugs, moths and other insects flock to the light, many of them, burning their wings, fall into the water. Small fish gather for this food, large predators come after it. Here the angler casts his line. The tests were successful. ... >>

Sauna for the heart 01.09.2004

Japanese doctors from the University of Kagoshima claim that staying in the sauna is beneficial for patients with chronic heart failure. Twenty patients spent 15 minutes daily in a steam room at 60 degrees Celsius for two weeks, and then lay in bed under a thick blanket for 30 minutes to maintain a high body temperature. A control group of 10 patients simply lay in bed for 45 minutes without a blanket. At the beginning of the experiment, the severity of symptoms of heart failure was approximately the same in both groups. But after two weeks, those who had been in the bath had significantly fewer cases of arrhythmia and the levels of two hormones in the blood decreased, the presence of which indicates damage to the heart muscle. ... >>

PHILIPS introduced its mirror TVs in Russia 29.08.2004

Philips has announced the start of sales in Russia of MiraVision TVs, which are wide-panel LCD screens with a mirror coating. First of all, such devices are intended for institutions of the hotel and entertainment industry, the cost of each of them is about ?3000. Mirrored LCD TVs appeared about 2 years ago. Widescreen TVs of the MiraVision brand were introduced in the US and Europe already in the middle of last year. However, to date, 20 such devices have already been sold in Russia. Models MiraVision 17HM8801 and MiraVision 23HM8801 have a screen size of 17 and 23 inches, respectively. In these devices, the LCD screen is specially attached to the mirror and occupies only part of its surface. ... >>

Falcon will produce equipment under the Akai brand 27.08.2004

On July 28, Akai Universal and Consumer Electronics Sokol entered into a long-term exclusive agreement to organize the licensed production of a full cycle of TVs and other consumer electronics under the Akai brand in Russia. The general list of products covered by the terms of the agreement includes CRT and LCD TVs, plasma panels, DVD players and home theaters In addition, under the terms of the agreement, Sokol receives the right to distribute in Russia and the CIS countries all of the above products manufactured under the Akai brand, along with some other major representatives of retail chains household appliances and wholesale companies. ... >>

Radio receiver VICTOR RA-BF3 with sound delay system 25.08.2004

The Japanese company Victor Company of Japan, known in Russia by the JVC trademark, has released a new Victor RA-BF3 radio receiver with a sound delay system. A little earlier, the same company introduced a TV with a similar system. NHK's proprietary audio slowdown system improves speech intelligibility, particularly in radio news broadcasts. The received sound is recorded in the built-in buffer, after which it slows down, deciphering the "patters" of the speakers. The system automatically monitors the duration of pauses in programs and adjusts the speed of audio playback. The Victor RA-BF3 model is capable of receiving radio broadcasts in the FM and AM bands, as well as the sound of television broadcasts in the meter range. The receiver has an analog tuning system and features large buttons for ease of use. The device reproduces monaural sound, has a built-in 10 cm loudspeaker and output for ... >>

Microwave to the heart 23.08.2004

Engineers from Australia have designed a device that allows you to treat arrhythmia of the heart muscle using microwave radiation. The device was designed by engineers from the University of Technology Sydney (Australia) under the leadership of Hank Chiu. With this device, microwave radiation heats individual, precisely selected, sections of the heart muscle up to 55°C. "This procedure only takes a few seconds, and the result is damage that blocks the wrong electrical signal," explains Hink Chiu. Removing a piece of tissue is a common way to deal with arrhythmia (frequent irregular heartbeats). One of the methods is radio emission, when a needle is inserted into the heart and a high-frequency signal is transmitted through it, burning a spot with a diameter of five millimeters. However, if the heat is strong, the blood can clot and form a blood clot. Microwave radiation for the treatment of arrhythmias is also used, but only in combination with surgical methods. "We hope to make ... >>

Nanoelement for soldering ready 20.08.2004

Scientists from Israel attached gold tips to the nanotransistor, and now it is easy to attach it to an electric nanocircuit. In stories about the brilliant future of nanotechnology, the miraculous nanoparticles themselves take center stage. However, the ways of connecting them, for example, into some kind of working electrical circuit, are the subject of reflection for many learned men and women. Really, isn't it possible to manually collect billions of particles? In addition, good electrical contacts are needed, but how to attach them so that the properties for which everything is intended do not disappear? Scientists from the Center for Nanoscience and Nanotechnology at the University of Jerusalem paved the way for solving both problems: they attached two gold particles to the ends of an extended nanocrystal with strong chemical bonds. The result is something that looks like an aerobic dumbbell. "Due to the chemical bonds, electric current flows easily through this structure," says research team leader Prof. Uri Banin. " ... >>

Mouse left 18.08.2004

Controlling a computer mouse with your left hand is better for your spine, joints and muscles than using the conventional way when the mouse is to the right of the keyboard. Alvin Delyle of the Institute of Occupational Health and Safety in Montreal, Canada, asked 27 right-handed computer workers to move their mice to the left for a month. It turned out that in this case, the shoulder, arm and wrist make fewer movements and these movements have a much smaller amplitude than usual. Meanwhile, it is precisely these repetitive movements that can lead to occupational diseases of a computer engineer. The reason for the improvement in ergonomics when using a mouse with the left hand is that the standard computer keyboard is not symmetrical. Directly in front of the typist are rows of letter keys. On the left, the keyboard ends with one row of service keys, and on the right, in addition to three rows of cursor control keys, there is also a numeric keypad for entering numbers and calculations, consisting of four rows of keys. ... >>

Dogs look like their owners 17.08.2004

Observant people have been talking about this for a long time, but a scientific assessment of the degree of similarity between dogs and their owners has been carried out for the first time. Psychologists from the University of California at San Diego (USA) went to a park where local dog owners walk with their pets and photographed 45 dogs (25 purebreds and 20 mutts) and their owners. They were filmed separately and against different backgrounds. Then the obtained photographs were shown to 28 students and asked to arrange the pictures in pairs "dog - owner". The similarity was considered proven if more than half of these "arbitrators" correctly made one or another pair. Result: the owners of 16 out of 25 purebred dogs were identified correctly, but with the mutts the task turned out to be more difficult. Only 7 out of 20 were recognized as similar to the owners. It was found that the degree of similarity does not depend on how long the person and the dog live side by side. The authors of the study cannot give a clear explanation for their results. Perhaps, they say, in the case of purebred dogs, each picks a pet, ... >>

Hydrofoil car 16.08.2004

At the Geneva Motor Show, held in March 2004, a small Swiss company "Rinspeed" showed the world's first hydrofoil amphibious car. Double car "Splash", which in English means "Splash", driving into the water, releases a propeller from the trunk. Folding wings depart from the sides of the hull and fall under the bottom. The spoiler is lowered - in the water it turns out to be the rear wing. The 140 horsepower two-cylinder engine can run on natural gas or gasoline. On land, speeds up to 200 kilometers per hour develop, on water - about 80 kilometers per hour. ... >>

Fullerenes can be dangerous 14.08.2004

Preliminary studies by American hygienists suggest that fullerenes - round hollow molecules consisting of several dozen carbon atoms - can be harmful to the body. Fullerenes were first obtained in 1985; they can be used in microelectronics, as an additive to lubricants, in fuel cells. Pharmacists want to use these nanometer-sized beads (a nanometer is one thousandth of a micrometer) as supermicroscopic pills, filling them with drugs and injecting them into the patient's bloodstream. They are also used in cosmetics, filling with cosmetics. However, experiments on fish conducted at the University of Dallas (USA) have shown that fullerenes can accumulate in liver cells and brain neurons, changing the functioning of genes in these cells and damaging cell membranes. The degree of toxicity of ultramicroscopic carbon balls is estimated as average between nickel and benzopyrene, a carcinogen contained in t ... >>

Orange sky 12.08.2004

This is the name of a tanker for the transport of orange juice from South America to Europe, recently launched in Bremerhaven (Germany). There are only two such tankers in the world. The vessel, 172 meters long, has 15 tanks with a total capacity of 11 cubic meters. On the way, the tanks are cooled by a powerful refrigeration system. The air above the surface of the juice is replaced with nitrogen to prevent oxidation. Most of the tanks are usually filled not with juice, but with its concentrate. Water is evaporated from the juice in a vacuum, and its volume is reduced by about six times. Due to the high content of acids and mineral salts, the concentrate can be cooled on the way without freezing down to minus 10 degrees Celsius. Upon arrival in Germany, the juice is reconstituted by diluting with distilled water. The average German citizen drinks almost 10 liters of orange juice a year. ... >>

Refalt - instant asphalt 10.08.2004

The Austrian company "Vialit" produces a mixture of "Refalt" for instant repair of asphalt road surfaces. The black powder, supplied in sealed containers, is poured into the pothole, water is added and leveled. After a few minutes, the hardened new coating can be driven on. Repairs are easily carried out both in rain and in winter, at low temperatures. Old Refalt, like ordinary asphalt, can be reused. ... >>

Microbes eat oil 09.08.2004

The content of hydrocarbons in the effluents of Ukrainian metallurgical enterprises exceeds the permissible norms by 5-40 times. Existing mechanical, chemical and biological cleaning methods are laborious, slow, expensive, and in some cases harm the environment no less than the oil products they are supposed to rid nature of. Known microorganisms that can eat various fractions of oil. Ukrainian scientists were able to intensify this process. Specialists from the Institute of Botany of the National Academy of Sciences of Ukraine have selected the optimal complex of microorganisms. As a result of their vital activity, oil-containing effluents from metallurgical plants turn into compounds that do not harm nature. The final product of microbiological decomposition is humic acids, which can serve as a fertilizer. ... >>

Milk inoculation 07.08.2004

Five-year-old Australian Alexander N. was taken to a clinic in Jena (Germany) to be treated for a rare and severe type of allergy: the boy could not tolerate cow's milk proteins. One thousandth of a percent of these proteins (and they are sometimes added to the most unexpected food products) was enough for the child to develop a swelling of the larynx that blocked breathing. The treatment turned out to be simple in principle, but requiring strict medical supervision. For five days the child was given the same cow's milk, but in greater dilutions. We started with a homeopathic dilution a million times: for a thousand liters of water (per cubic meter) one milliliter of milk. And then every twenty minutes the dilution was halved. Already on the fourth day, Alexander began to receive pure milk, and nothing terrible happened. Now, in order for the results of the treatment to be preserved, he must drink half a glass or a glass of milk daily. The method is not suitable for all cases of food allergies. For example, it is unsuitable ... >>

Mountains and deserts of Mars 05.08.2004

In January 2004, two American mobile vehicles, Spirit and Opportunity, landed on Mars. Mars rovers that have landed on different sides of the planet are quite briskly driving around the red desert and transmitting photographs of Martian landscapes and scientific data on the composition of the soil and atmosphere to Earth. Mars rovers are equipped with infrared spectrometers, which determine the mineral composition of soil and rocks. The European Space Agency's (ESA) Mars Express research vehicle, launched from Baikonur, went into orbit around Mars and is transmitting spectacular landscape images, but its Beagle 2 lander went missing while trying to land on Mars. ... >>

Shockproof music center 03.08.2004

The German company "Bosch" has begun production of a music center for construction sites. The electronics of the center are surrounded by a solid frame made of steel tubes and rubber shock absorbers. At an exhibition of construction equipment held in the USA, a company representative demonstrated the strength of the product by throwing a working "music box" from end to end of the hall. At the same time, the CD being played did not even stutter. Without harm to itself, the music center also endures a fall from the second floor. The electronics are protected not only from shock, but also from moisture penetration, so that they can work in the rain. Works both from batteries, and from a network. ... >>

Warmer in Europe 02.08.2004

Swiss climatologists from the University of Bern, after analyzing data on summer temperatures in Europe over several centuries, came to the conclusion that since the Middle Ages, the climate of the continent has been steadily warming. The last 30 years have been the warmest in more than five centuries. Regular and relatively accurate measurements of air temperature have been conducted for only about 150 years, so scientists used indirect evidence, for example, measurements of the width of annual rings on saw cuts of old trees from Scandinavia and the oxygen isotope ratio in Greenland ice cores. In addition, there are phenological records that were kept in some European monasteries. The monks noted, for example, the time of snow melting, the time of flowering of wild and cultivated plants, the period of ripening and harvesting of grapes. It turns out that the coldest in Europe for 500 years was the winter of 1708/1709, and the warmest was the winter of 1989/1990. The hottest during this period was the summer of 2003, when over ... >>

Bank collapse 01.08.2004

In the German city of Hagen, a hundred-meter skyscraper of one of the banks was recently demolished by an explosion. The demolition was carried out in public. The building, which stood for about thirty years and largely determined the skyline of the city, became too expensive to operate due to its high-rise building. More than two hundred kilograms of explosives were distributed over 1500 holes drilled at key points in the structure. For the first time in the world, during such a large demolition operation, the fuses were controlled by a computer. The explosion was not loud, not a single window was damaged in the surrounding buildings. The building sank in five seconds. The dismantling of the skyscraper would take 10 months. Fire hoses created a curtain of water that prevented the dust from flying, and yet, in the surrounding car parks, cars were covered with a thin whitish coating. From a safe distance, 40 residents of Hagen and the gathered tourists watched what was happening. For them, special platforms were built in advance. After the explosion, the crowd burst into applause. ... >>

The popularity of LCD TVs is growing 30.07.2004

Authoritative Taiwanese sources report the rapid growth in popularity of LCD TVs. If in the first quarter of this year the global demand for this type of high-tech products amounted to about two million pieces, then in the second quarter these figures will be exceeded. As for the second half of the year, analysts estimate the demand for LCD TVs at 5-6 million units. The most optimistic sources believe that in 2004 global demand will be 14-15 million units, but more cautious observers say that manufacturers simply cannot afford to ship such a number of TVs, so the real boom should happen next year. In addition, analysts believe that by 2006 19-inch LCD monitors will become the most popular among those sold on the market. ... >>

NEC has declared war on pirated batteries 29.07.2004

With the growing popularity of digital cameras and mobile phones, the number of manufacturers of "non-native" batteries that do not meet quality and safety standards has increased. As a result, according to the original developers, devices deteriorate. NEC Electronics has introduced a new software for microcontrollers of mobile devices that determines the authenticity of batteries. According to the Japanese company, its development is the most progressive through the use of its own Cipherunicorn-5 technology. The advantages of the technology are 5x smaller code size and 18x speed increase compared to analogues. Thus, the program can be used in any standard 8-bit microcontroller. The code written by the company's programmers will simply not allow such batteries to work. The battery is prompted for encrypted data, which, if not matched, will result in a failure to operate from the "wrong" power source. Acceleration of work was achieved in ... >>

CMYK TVs 27.07.2004

For nearly 50 years, all TVs have been displaying three RGB colors (red, green and blue). However, the Israeli firm Genoa Color Technologies has shattered the RGB stereotype and proposed complementing RGB with yellow, cyan and bright red (CMYK), which will increase the display of the visible color spectrum from the current 55% to 95%. As a result, on such a multi-color screen (MPC - multi-primary color) a high-quality and bright image of the film level should be obtained. Royal Philips Electronics also joined the project, hoping to release LCOS projection televisions based on composite color technology. Already in the third quarter of 2004, Genoa will produce the first chips supporting MPC technology. ... >>

Siemens A65: state employee with polyphony 25.07.2004

The division of Siemens for the production of equipment for mobile communication (Information Communication Mobile, ICM) introduced a new handset code number A65. The mobile phone is positioned as inexpensive, simple and easy to use and, at the same time, a multifunctional device equipped with a 4-position navigation key. The screen of the new mobile phone supports 4096 colors. An external camera with a flash is available as an optional accessory to the phone. Siemens A65 is the only budget A-class mobile phone that allows you to use the camera and send just taken pictures using MMS messages. The developers also pay attention to the design of the keyboard - the numeric buttons are clearly separated from each other for the convenience of the user. The new mobile phone operates in three bands - GSM 900/1800/1900. ... >>

PDA BrailleNote PK for the blind 24.07.2004

Pulse Data International, a company specializing in the production of computer equipment for the blind and visually impaired, has introduced the most compact PDA to date, designed specifically for this category of users. Dimensions of the new PDA BrailleNote PK - 174x92x32 mm, weight 450 g. The device runs under Windows CE and is equipped with 24 MB of built-in ROM and 64 MB of RAM, as well as 8 MB of non-volatile memory for storing user data. BrailleNote supports Wi-Fi and Bluetooth, allowing the blind to use a wide range of external devices that support this protocol, as well as use wireless Internet access. In addition to Wi-Fi and Bluetooth, BrailleNote is equipped with a serial and USB port, as well as a slot for Compact Flash cards. 1 GB MicroDrive disk media and ATA memory cards are supported. BrailleNote RK is equipped with an 18-character Braille display - "the alphabet of the blind", allowing them to "read" the text of the blind ... >>

Light bulbs go wireless 23.07.2004

Rapidly penetrating into our lives, wireless devices for various purposes have reached the most conservative strongholds of "wired" technologies - in particular, electric lighting. According to a press release from the American nuclear research laboratory Sandia National Laboratories, wireless light sources based on nanocrystals have been developed in the United States, which in the future can replace incandescent lamps or fluorescent lights that are familiar to us. In addition to the absence of electrical wires, the new lamps have another advantage - very high efficiency. The wireless light sources were developed as part of a joint project between Los Alamos National Laboratories and Sandia Laboratories. The emitting elements in them are nanocrystals. Semiconductor structures known as "quantum wells" are used as energy sources. Their ultraviolet radiation is effectively absorbed by nanocrystals, after which it is re-emitted in the form ... >>

Bluetooth adapter for Motorola phones 21.07.2004

The new Motorola Wireless Adapter DC600 makes it easy for owners of select Motorola phones to get Bluetooth wireless capabilities. The small device attaches to the bottom of your phone and allows you to connect to Bluetooth headsets, speakers and car systems. For audio and data transfer, the adapter is compatible with the following devices: Motorola wireless car kit, portable wireless speakers, HS800, HS810, HS820 series wireless headphones and Bluetooth USB PC adapter, and Motorola T720, T720i, T720c, T721, T722, T722i series phones , T730, T731, V400, V300, V60p, V60i, V60it Color, V60x, V66i, E310, V810, V120t, V120X and V120e. The following models only support audio: Motorola V60c, V60t, V60g, V120c, V66, and V70. The dimensions of the console are 39 x 42 x 16 mm, and it weighs only 17 g. The cost of such an adapter is 40 USD. ... >>

Flying at 68 terabitometers per second 20.07.2004

Scientists from Switzerland and the USA set another record for data transfer speed over long distances. Scientists from CERN and the California Institute of Technology set another record in the speed of information transfer over the Network: the distance of 11 thousand kilometers sent gigabits covered at a speed of 68 terabitometers per second, that is, the bandwidth of the communication channel was 431 gigabits per second. This is ten thousand times the capacity of a broadband access channel. For the record, the usual IP data transfer protocol version 6,235 and the existing global network were used, to which dynamic optical path switches were added. "The record brings us closer to the coveted threshold of ten gigabits per second," says Oliver Martin, head of CERN's external networks sector. According to a study by the US Department of Energy, in the next decade, ... >>

Magnetic heads polished with green tea 19.07.2004

Engineers from Arizona have figured out how to make a cheap and, most importantly, biodegradable liquid for polishing magnetic heads based on green tea. The reading heads of magnetic disks must be polished very carefully: if bumps occur on the surface, their height should not exceed ten angstroms. To wash off all kinds of dust particles, as well as particles of polishing powder, a liquid with sticky additives is used. As you might guess, usually these substances are specially synthesized, and, being too tough for soil microbes, they pollute the environment after use. The volume of such waste is not small - more than 160 million hard drives are produced per year. Therefore, there is a desire to replace synthesized substances with natural ones: they were originally intended for food by microorganisms. In a magnetic head polishing liquid, engineers from the small company "Ventana Research Corporation" while working on a grant from the National Science Foundation (USA), allocated under the program ... >>

oily water 15.07.2004

The English company "Aqualider" has developed a new composition for extinguishing fires. This is "Fok-Stop" - a granular, highly hygroscopic polymer, like the one used in diapers. When 0,1-0,2% polymer is added to water, a transparent, rather viscous mass is formed that can be pumped through a fire hose. Firefighters nicknamed this mass "greasy water." Unlike rapidly flowing water, it sticks to vertical burning surfaces and remains in place for a relatively long time, smothering the fire. "Fok-Stop" is not dangerous for living organisms, does not pollute the environment (similar polymers are used in agriculture to retain moisture in the soil). The new composition is especially effective in forest fires, protecting tree trunks. In England it is already used by 55 fire brigades. Interest was shown by Australia, Hong Kong; 15 European and 21 Latin American countries. ... >>

Electronic blackboard 14.07.2004

Ten schools in Berlin are testing electronic blackboards. This is a white board with a pressure sensitive surface. On it, as on a screen, the projector throws the image from the computer monitor to which the board is connected by a wire. They write and draw on the surface of the board with a special electronic pencil, they also erase and change what is written. If a student at the blackboard solves mathematical examples, the board (or rather, the computer that controls it) can be asked to check the solution and give the correct answer. The teacher can send everything written on the board to the Internet, so that a sick student can follow the lesson in real time at home on his computer. So far, tests have revealed only one drawback: standing at the board blocks part of the projector beam. However, even a person who writes on an ordinary school board blocks part of what is written with his back. In addition, the problem can be dealt with by making the board translucent and placing the projector at the back. ... >>

Drug test 12.07.2004

About seven million American adults use drugs regularly. Therefore, the issue of their detection in suspected drug addicts is acute. Dragwipe has released a miniature device for detecting four main groups of drugs in human sweat - these are opiates, cocaine, amphetamines and cannabis drugs. The analysis takes one to two minutes, it is enough to pass the sensitive element of the device over the skin of the person being tested several times. If a person refuses to be analyzed, traces of drugs can be detected on objects that the suspect touched: steering wheel, computer keyboard and mouse, door handles and electrical switches in the apartment. ... >>

The brightest star 11.07.2004

An international team of astronomers has discovered the largest and brightest star at the other end of the Galaxy, which received the index LBV1806-20 in star catalogs. This star, which is 45 thousand light-years away, is 150 times more massive than our Sun, its diameter is 200 times greater, and its brightness is 40 million times greater than the sun. This blue giant is estimated to be very young, less than two million years old (the Sun is about five billion years old). Despite the enormous brightness of the newly discovered star, it is almost invisible from Earth: 90 percent of the light is absorbed by clouds of cosmic dust and a large distance, so that the apparent brightness corresponds to the eighth magnitude (stars no weaker than the fifth are visible to the naked eye). The existence of such a giant does not fit into generally accepted astronomical theories: it was believed that there could be no stars more than 120 times the mass of the Sun. ... >>

Sun and wind for home 10.07.2004

The British government has set a target: by 2015, the country should receive 15 percent of its energy from renewable natural sources. The English firm "Nuaire" proposes to attach a system of solar collectors to the cottages. The sun bears part of the cost of heating the house and heating water, and the built-in heat accumulators are so efficient that they continue to heat the house even at night and in cloudy weather. The system is suitable not only for England with its relatively mild climate, but also for the countries of Scandinavia. Another British firm, Windsave, has developed a model of a small wind-electric generator that can be easily mounted on the roof of any house. Such a windmill develops power up to 750 watts, providing 15% of the electricity consumed by the average English family. ... >>

Dry cleaning of birds 09.07.2004

A new way to save seabirds smeared with oil that fell into the sea during a tanker accident was proposed by Australian environmentalists. Usually, the feathers of unfortunate gulls, guillemots and cormorants are washed with gasoline or detergents, and the natural fatty coating of the feathers is also washed off. Working with one bird takes an hour. John Orbell of Victoria University of Melbourne suggested dusting the soiled bird with fine iron powder, which absorbs oil, and then picking up the sticky mixture with a strong magnet. In a few minutes, 92-98 percent of contaminants are removed from feathers. In the future, you can separate the oil from the iron and reuse the powder. ... >>

turtle diver 08.07.2004

The leatherback sea turtle has set the diving depth record for a reptile. This largest of all species of turtles can exceed two meters in length, the largest specimen found weighed 916 kilograms. It lives in all oceans except the Arctic. The species is listed in the Red Book. English zoologists from the University of Wales, having placed depth gauges-recorders on the shells of several individuals, discovered that one of the experimental turtles dived in the Atlantic, away from the coast, to a depth of 640 meters. Unpublished data suggest that turtles of this species are able to dive a kilometer. Leatherback turtles feed on jellyfish and other gelatinous plankton, and since this food is about 98 percent water, they have to work hard to find food. The previous record, recorded close to the coast, was 475 meters. ... >>

After the dinosaurs, mushrooms ruled the earth 07.07.2004

As far as is known, the extinction of dinosaurs 65 million years ago was caused by the fall of an asteroid that left a crater with a diameter of 180 kilometers on the Yucatan Peninsula and in the sea off its coast. The asteroid crashed into the Earth at a speed 40 times the speed of sound. The dust raised by the impact, smoke and soot from the forest fires that had arisen covered the Earth from the sun's rays, the vegetation living by photosynthesis died, followed by animals that fed on plants, and then predators. Swedish and New Zealand paleontologists in many parts of the Earth have found a thin, four-millimeter layer of coal left by this catastrophe. A lot of fungal spores and remains of their mycelium were found in the coal layer. Apparently, fungi, which do not have photosynthesis and therefore do not need sunlight, then multiplied all over the Earth, feeding on the remains of dead plants and animals. Above is a layer 60 centimeters thick, in which remnants of regenerating vegetation were found. Popes were the first to appear after the global catastrophe ... >>

Treatment of herpes with infrared light 04.07.2004

"Fever" on the lips - a manifestation of the herpes virus, which infects about 95% of the population - is usually treated with either home remedies or special antiviral creams. The English firm Virulight has begun production of a pocket device for the treatment of herpes. The razor-sized device, powered by a built-in battery, irradiates damaged skin with infrared light at a wavelength of 1072 nanometers. Usually, two irradiation sessions of three minutes are enough to eliminate the virus, in more complex cases - up to seven sessions. If you capture the disease at the initial stage, when it manifests itself only in tingling in the corners of the lips, one session is enough. The entire treatment takes half the time of an antiviral cream treatment. The light actually does not affect the virus, but the immune cells of the skin, stimulating their activity, and they drive the virus into a dormant state when it does not manifest itself. ... >>

Feed the cows rapeseed 03.07.2004

Researchers at the University of Northern Ireland in Belfast fed 64 dairy cows rapeseed, so that each animal received up to 600 grams of rapeseed oil per day. As a result, milk has become healthier: the proportion of saturated fatty acids, from which cholesterol is produced, has decreased, and the content of unsaturated fatty acids, useful for the heart and blood vessels, has increased. Thus, the amount of palmitic acid fell by 26 percent, while the content of oleic acid increased by 35 percent. The cows didn't mind the new feed. The butter obtained from the milk of these cows has a lower melting point, it is softer than usual and spreads well on bread, even when it has just been taken out of the refrigerator. ... >>

Turbine from the other side of the world 01.07.2004

In 2009, the Three Gorges power plant on the Yangtze River (China) is to be put into operation. The reservoir, the creation of which had to relocate almost two million people from 13 cities, 116 towns and about 4500 villages, is larger in area than Switzerland. For the first stage of the power plant, eight turbines were ordered in France, three of them will be delivered from there, and five were built by French specialists at a plant in China. The first of three turbines has just arrived on site. The turbine plant is located in Grenoble, and the cargo was supposed to be sent from the port of Marseille. However, since not all bridges on the road from Grenoble to Marseille could withstand a load with a diameter of 11 meters and a weight of 450 tons, the turbine was delivered to Marseille in parts and assembled there. For this, an assembly shop was built on the shores of the Mediterranean Sea. Having sailed 20 kilometers on a ship to Shanghai, the turbine was loaded onto a barge and followed the river almost to the very dam. The last 30 kilometers had to be overcome by land, on a cargo platform ... >>

SONY will build a super-TV on the CELL processor 30.06.2004

Sony has announced plans to use high-performance Cell media processors to make next-generation TVs that will receive signals directly from the Internet. According to Reuters, citing the Japanese business newspaper Nihon Keizai Shimbun, development of the new television should be completed in 2006. It is assumed that the TV will be able to independently receive digital video directly from the Web, without resorting to the help of a computer. In principle, Cell-TV will actually be a computer with a slightly truncated functionality. Ideally, the TV should work in conjunction with the next generation Sony PlayStation game console, which will also be built on Cell processors and, in parallel with its main task - games - will also perform the functions of a home multimedia server. Thus, the duo being developed by Sony Cell engineers will obviously compete with "home computers" running "multi- ... >>

PIONEER car system with hard drive 29.06.2004

Pioneer introduced the Carrozzeria HDD (Cyber ​​Navi) in-car navigation system, equipped with a 30 GB Toshiba removable hard drive. The hard drive can be inserted into the Living Kit system, connected to the Internet, connected to a TV or other equipment. Users can create travel itineraries or record their favorite music on the hard drive. The new system also has a traffic jam prediction function. The hard drive has a database of past traffic conditions, analyzed seasonally, by time of day, day of the week, and other indicators. The system can issue traffic maps with predicted traffic levels for a specific date and time and suggest the best traffic plan based on past and current traffic information. The AVIC-ZH900MD has a 7-inch touch panel and DVD/MD/CD drives. Its price is about $3500. Another model AVIC-ZH900 is similar to AVIC-ZH900MD but without MD player and costs ... >>

SHARP DV-HRW30 - VHS VCR, DVD and HDD recorder 28.06.2004

Sharp Corporation demonstrated the DV-HRW30 video recorder. Due to the abundance of electronics, cassette mechanisms and DVD transport, the recorder turned out to be large, or to be more precise - 430x377x100 mm. Its mass is also not small - 7,2 kg. In the "bowels" of the DV-HRW30 "lies" a DVD-R/RW recorder with the ability to read DVD+R/RW discs, a VHS player, and an 80 GB hard drive designed to record video from TV and other video sources (you can record a maximum of up to 100 hours of video). To connect external components, there are analog audio and composite inputs; composite, stereo, D2, S-Video, coaxial and optical outputs. ... >>

Law against the IT industry 27.06.2004

A bill has been submitted to the US Senate that, if passed, will lead to dramatic changes in the IT industry. The bill, called the Stimulus Act, was lobbied by powerful copyright holders concerned about the growing popularity of P2P networks. As critics of this bill say, it interprets copyright too broadly. Thus, the "Incentive Act" introduces liability for copyright infringement, expressed in "aiding, abetting, stimulating, recommending or providing." Phillip Corvin, a lobbyist for Sharman Networks (Kazaa) remarked, "If you make a dual-use product and you know it's being used to infringe copyright, you could be held liable." If the "Stimulus Act" is adopted, not only P2P networks will be hit, but even manufacturers of consumer video equipment, CD-RW and DVD-RW devices, as well as related software that allows wasps ... >>

Samsung is going to release a mobile phone with a built-in satellite TV 26.06.2004

In the third quarter of this year, Samsung is going to release a mobile phone that can receive satellite TV signals. At the same time, the Digital Multimedia Broadcasting (DMB) service will begin, thanks to which the owners of such phones will be able to watch up to 40 television channels on their screens. At first, only South Koreans will be able to enjoy a satellite TV in their pocket. The DMB service will be operated by South Korean satellite TV operator SK Telecom. Regarding mobile satellite TV pricing, Samsung's management says it will be quite affordable and will likely charge a flat monthly fee. It should be noted that this is not the first experience of creating "television" phones for Samsung. Last year, Samsung released a phone that receives TV signals from ground stations, but the number of channels received in this case was very limited. True, the prospects for a mobile spa ... >>

Passion around video formats 25.06.2004

The active struggle of supporters of two alternative optical formats of the future continues. On one side of the barricades are Sony, Pioneer, Samsung, Matsushita Electric, Philips and Microsoft, with their Blu-Ray format. The other side is represented by Toshiba and NEC, which are actively promoting their HD-DVD format. Now there is some parity between the parties. On the one hand, Sony has already sat down to release a number of albeit very expensive, but quite commercial products based on Blu-Ray technology. Philips is also threatening to release similar devices soon. Supporters of the HD-DVD format do not yet have finished commercial products. But recently they enlisted the support of such an authoritative organization as the DVD Forum. Taiwanese manufacturers are neutral. They are ready to start manufacturing disks and drives of any approved standard, or even both at once. So the HD-DVD proponents once again managed to create a stalemate, although it seemed to many that the victory of Blu-Ray was ... >>

Remote control 24.06.2004

An increasing number of families in Europe are acquiring remote control systems for their apartment, which is a set of specialized software and a number of webcams installed in the apartment that can be remotely controlled via the Internet. The owner has the opportunity to constantly or periodically monitor the situation in his apartment. Moreover, you can get by with just one mobile phone connected to the Web. The cost of the systems is $200...300, and analysts suggest that the growth in sales of these surveillance systems will be one of the most dynamic trends in the tracking systems market in the next five years. ... >>

Mobile phones with 3-megapixel cameras will appear this year 22.06.2004

Three Korean mobile phone makers - Samsung Electronics, LG Electronics and Pantech Group - are preparing to introduce handsets with 3-megapixel cameras as early as this year, the Korea Times reported, citing industry sources. If that happens, then the resolution of phone cameras will triple a year after Samsung and Pantech released megapixel copies. Samsung is first going to catch up with its rival LG and release an intermediate version with a resolution of 2 megapixels, as well as a built-in MP3 player. LG Electronics has already released the LG-SD330 with such a camera, and is preparing to introduce a 3-megapixel camera phone this summer. Pantech is about the same level as Samsung. Currently, commercially available camera phones have a resolution of 300 pixels, which is incomparable to the quality of even the simplest digital cameras. The three-millionth milestone of matrices will make a separate digital camera nickname ... >>

MATSUSHITA ELECTRIC introduced fur lamps 21.06.2004

Very funny-looking lamps are called "PuffMuff", and give a very soft diffused light. "PuffMuff" are available in two versions - hanging and desktop. For decoration, white fur or white with black spots like a cow is used. The PuffMuff pendant lamps are 45,5 cm in diameter and 21 cm long. The table lamps are 19 cm in diameter and 27 cm high. ... >>

PHILIPS DVP 630: budget DVD player for the Russian market 19.06.2004

According to Philips, deliveries of the new Philips DVP 630 DVD player will begin on the Russian market in June. The device is designed for the lowest price category, so the recommended retail price should be $120. The body height of the DVP 630 is just over 40 mm. The video stream is upsampled four times, it is possible to output a progressive scan signal in PAL through the component output. There is also an S-Video connector, composite and traditional Scart (RGB). The device's audio path uses 24-bit/192 kHz digital-to-analog converters with a signal-to-noise ratio of 105 dB. ... >>

Video recorder for mobile phones 18.06.2004

Mitsubishi Corporation Division Mitsubishi Plastics has released the Pyramid video recorder, designed to record television programs on SD or miniSD memory cards for playback on mobile phones or PDAs. The dimensions of the Pyrami recorder are 115x115x70 mm, it supports SD and miniSD memory cards. The recorder connects to a TV or VCR with a cable and can record up to two hours of video on a 128 Mbit memory card. Ten models of mobile phones with support for video viewing and SD and miniSD memory cards are currently available in the Japanese market, eight are offered by NTT DoCoMo (N900i, F900i, SH900i, P900i, P2102V, F2102V, N505iS and F505i) and two models by Vodafone (J-SH53 and V601SH). The cost of the Pyramid recorder is 20000 yen (approximately $185). ... >>

MOTOROLA taught TVs to understand human speech 16.06.2004

With the help of small company AgileTV, Motorola has redesigned its DCT2000 cable TV set-top box so that it can now be controlled by voice. To tell her something, it is not necessary to shout at the whole apartment. To do this, you can use the microphone built into the remote control. The DCT2000 program is capable of handling approximately 100 words and phrases in multiple languages ​​and understands simple command combinations. For example, for the phrase "Find the Sopranos", the prefix will display a list of channels on which the series "The Sopranos" is or will be on. Before releasing the updated DCT2000 for sale, it was tested for more than a year among American cable subscribers. "Our users who have tried this feature have given it a high rating. Many of them have even discovered interesting channels they didn't know about before," says Jim Faircloth, CEO of cable TV provider USA Media. in fact, the desire of the cable operator ... >>

PENTAX Stops Production of Compact and SLR Analog Cameras 15.06.2004

According to Pentax, despite the worldwide recognition and uniqueness of PENTAX film cameras, the corporation is ceasing production of both compact and SLR analog cameras. Of the entire line of film cameras, PENTAX will continue to produce exclusively professional medium format photographic equipment. Thus, Pentax Corporation became the first company from the so-called "big five" photo brands, which will fully concentrate on the most relevant line of digital cameras of various classes today (including professional and amateur digital "reflex cameras"), as well as the production of "hybrid photo-video cameras. However, there is still a chance for consumers to purchase film cameras such as the Espio 24EW (a high-end compact camera with a 24-105mm ultra-wide-angle zoom lens) or the Espio 140V (one of the best value for money cameras in its class). And for enthusiastic photography lovers, perhaps ... >>

Tomograph for seed sorting 13.06.2004

German scientists have taught an X-ray tomograph to automatically sort seeds. As you know, what you sow is what you reap, but germination tests are now the only way to check the quality of seeds. "Testing takes a lot of time, especially in a large seed company like ours, which packs four thousand tons of sugar beet seeds per year," says Dr. decided to create an installation that will allow you to control up to a dozen parameters of each seed." An X-ray microtomograph scans individual seeds, while a computer builds sections of each seed, creates a three-dimensional image, recognizes various tissues from it and measures their volume. According to the results of the analysis, he immediately sorts the seeds, and very quickly, hundreds of pieces in a couple of minutes. In addition to working out the recognition algorithm, scientists have solved another important problem - they have established a connection between morphology and ... >>

Chip cooling with a plasma fan 11.06.2004

American engineers have come up with a new concept for cooling microcircuits - using a cold plasma fan. To activate the plasma fan, invented by scientists from Purdue University, USA, the air is ionized and the resulting plasma cloud is driven over the microcircuit by an alternating electric field. Air molecules collide with it in the same way as with the feathers of an ordinary fan, and change, that is, cold particles come to the place of hot ones near the surface of the microcircuit and it cools down. "Air exchange at the surface of the chip is a headache for electronics engineers," says Suresh Garimella, director of the university's Center for Research on Cooling Technology. "That's why there is always a fan in the computer. Not only is it noisy, it also consumes energy. In addition, you need a heat sink - a heatsink attached, for example, to the processor. Our device is completely silent; it simultaneously cools the microcircuit and performs air exchange. " The ions for the plasma fan will be ... >>

Gamma-ray telescope in the Canary Islands 08.06.2004

A new gamma-ray telescope, designed by scientists from Germany, Belgium, Italy, Switzerland and Spain, went into operation on the island of Palma (Canary Islands). The telescope registers gamma-ray fluxes from space not directly, but by Cherenkov radiation, which gamma particles generate in the upper atmosphere. A 234-square-meter swivel mirror made of carbon fiber and aluminum captures the flashes that occur at altitudes of 10-20 kilometers, when gamma rays strike air atoms and create charged particles rushing towards the Earth. The rays of light reflected by the mirror are concentrated on a camera of 577 highly sensitive sensors. The computer, analyzing the data from the camera, calculates the trajectory of the initial beam of gamma rays. This will allow physicists to understand the nature of radiation sources. The telescope can look into the depths of the universe for eight billion light years. ... >>

There are no more lefties 07.06.2004

According to a study conducted by historians from the University of Montpellier (France), the number of left-handers has not changed over the past 30 thousand years. Paleolithic people often applied their palm prints to the walls of caves, pressing their hand to the stone and covering a section of the wall with ocher powder with the other hand (according to some reports, the powder could be applied from a pipe into which the artist blew). Apparently, handprints were made for magical purposes, or maybe this is an analogue of the inscriptions left on the rocks by modern tourists. Having studied 507 such prints aged 10-30 thousand years in 26 caves in France and Spain, Charlotte Forier and Michel Raymond found that 23% of them belong to the right palms, that is, the authors of these drawings acted with the left hand. Then the historians asked 179 French students to use the same method to leave their prints on sheets of cardboard. It turned out that 22,9% preferred to act with their left hand, receiving an imprint with their right. ... >>

liquid lens 05.06.2004

The Dutch firm "Philips" has created a zoom lens based on the property of an oil drop to spread or concentrate under the influence of an electrical voltage. Previously, Philips used the same effect, but on a miniature scale, to create a paper-thin television screen. A drop of aqueous electrolyte and a drop of oil are placed in a glass cylinder. Liquids do not mix; a flat interface appears between them. But it is worth applying tension to the ends of the cylinder, as a drop of oil bends, turning into a convex lens. When the poles are reversed, the oil recedes, forming a concave surface. By smoothly changing the voltage and its sign, it is possible to obtain lenses with different focal lengths - from 50 millimeters to infinity (when the interface between oil and water is flat). Switching across the entire zoom range takes less than ten milliseconds. Such a lens is useful for digital cameras built into cellular bodies. ... >>

Wine in tablets 04.06.2004

Medical statistics show that in countries with a traditionally high consumption of dry red wine, the level of cardiovascular diseases is reduced. But, judging by the fact that the consumption of vodka does not save from these diseases, the point here is not in the alcohol itself, but in the accompanying substances of red wine. Employees of the Pharmaceutical Institute in Pavia (Italy) have developed a preparation containing all the useful components of wine. Tablets are made from the liquid mass remaining after alcohol is distilled from the wine must to produce strong drinks such as cognac. Sugar and some amino acids are added to the mass. The mixture is filtered and then dried under vacuum. Tablets are pressed from the resulting powder, each of which is equivalent to a glass of red wine in terms of preventive action. ... >>

Giant dump truck 02.06.2004

The world's largest, according to the manufacturer - the German company "Liebherr", a quarry dump truck was shown at the exhibition of construction machines in Munich. The length of the car is 14,5 meters, the width is almost 9 meters. The body holds 363 tons of ore or coal. A 3647 horsepower diesel engine with 20 cylinders accelerates the dump truck to 64 kilometers per hour. The fan behind the radiator grill has a diameter of 2 meters. ... >>

Savings at ATMs 01.06.2004

Too much money is bad when it's wasted in an ATM. More than 50 ATMs have been installed in Germany, and the amount charged into each of them for payments is up to 400 euros. As a rule, this is too much, customers do not have time to sort them out before the next visit of the collector. In the meantime, extra money (an average of 20 to 40 thousand from each ATM) could be spinning in the German economy. Siemens has developed a computer program that helps calculate how much money to put into a particular ATM. According to experts, the program will return more than 50 million euros to circulation per year. ... >>

PIONEER Music Center with 40Gb HDD Coming at the End of May 30.05.2004

Pioneer will begin selling the X-AM1, a music center with a built-in 40GB hard drive, on May 20 this year. The model will have a broadband LAN interface that will allow users to download music files without using a computer. The disc holds over 1000 regular audio CDs. The model will support recording music from a regular CD and working with the "CDDB" database to quickly create a music archive on a disc. The center has a 5 inch color LCD display for displaying file information. ... >>

New DVD players will self-censor 29.05.2004

People who have always wanted to automatically exclude profanity or skip violent scenes in movies now have a new option - RCA's DVD players, priced at around $79, filter out inappropriate content. Thomson, which owns the RCA brand, will start selling the players at Wal-Mart and Kmart supermarkets this month, even as the filtering software they use comes under legal attack from Hollywood. The filtering software, which allows you to select 6 levels of protection against unwanted content, was developed by ClearPlay, which previously offered it for watching DVDs on computers, and last year began negotiations with RCA to produce a hardware player. Filter updates will be released every week and will be available for $5 per month, although the procedure for adding them to the player is still quite inconvenient and burdensome. Filters are downloaded from the Internet and burned to a CD so that they can then be read by the player. The library is currently ... >>

LCD TVs DELL and HEWLETT-PACKARD in OEM version ASUS 28.05.2004

Surprising as it may sound, perhaps soon LCD TVs under the Dell and Hewlett-Packard trademarks will appear on sale. Both companies have expressed interest in cooperating with ASUS in the production of television receivers with liquid crystal displays. ASUS has already partnered with Dell and HP as an OEM motherboard contractor, and now looks forward to a fruitful collaboration on LCD TVs based on its experience in laptops and game consoles. ... >>

TV on the wrist 27.05.2004

The device called NHJ VTV-101 should go on sale in the Japanese market in May this year. It is difficult to call this device a wrist watch, because, although they show the current time, this is far from the main task. In essence, the NHJ VTV-101 is a true color television worn on the wrist. To view TV programs, a full-color TFT display with a diagonal of 1,5 inches (22,2x29,5 mm) is used. Its physical resolution is 280x220 pixels. The TV has a built-in TV tuner capable of receiving VHF1-12 and UHF13-62 TV channels. The physical dimensions of the device itself (without strap) are 45,7 x 18,2 x 49,4 mm. The price of the device is extremely democratic - $185. ... >>

GIGABYTE TVs 26.05.2004

Probably the latest of the well-known computer companies, which finally became interested in such a promising area as the production of liquid crystal televisions, was Gigabyte. The rapidly growing market, which managed to attract all significant players like flies to honey, seemed attractive enough for a well-known motherboard manufacturer. According to representatives of Gigabyte, the production of TVs will begin in the third quarter of this year. Market analysts believe that Japanese consumer electronics manufacturers, such as Toshiba, NEC, Fujitsu Siemens Computers and Hitachi Displays, will become Gigabyte's potential customers. ... >>

Rumors about the demise of CRT displays did not materialize 25.05.2004

Samsung SDI, a division of the South Korean display giant, has announced its latest development, the thinnest CRT display for digital TVs to date. According to Samsung, the new display is not only not inferior in thickness to LCD panels, but also surpasses them in quality, and is also much cheaper to manufacture. So the market will soon expect not complete oblivion, but a new peak in the popularity of CRT displays, Samsung claims. The introduction of the most advanced manufacturing technology will allow Samsung to reduce the cost of widescreen TV panels compared to their counterparts from competitors, produced on the lines of the sixth generation. In recent years, traditionally thicker CRT displays have given way to thin LCD or plasma panels in digital TVs. However, now, according to Samsung SDI representatives, with the launch of a new technology, thanks to which CRT displays will be thinner and much cheaper than liquid crystal and plasma ... >>

Handwritten SMS PenPhone 24.05.2004

Siemens plans to present an interesting novelty at the annual CeBIT exhibition - a mobile phone in the form of a writing pen. The unusual device was named Siemens PenPhone. It allows you to write text on any surface (including air), and then execute what is written. So now you can write any number and call it. Significantly simplifies the process of typing SMS-messages: PenPhone allows you to recognize any handwritten text. PenPhone is similar in size to a regular ballpoint pen - length 140 mm, diameter 19 mm. Siemens is confident that the PenPhone is capable of making a revolution, however, while the company does not even name the date of its release on sale. ... >>

Samsung Display Prototypes 23.05.2004

At the Seattle show, Samsung showcased a 17-inch organic EL panel designed for TVs. Unlike its main competitors in this market sector, Samsung uses low molecular weight organic EL materials on a glass substrate to create panels. Samsung used laser layering technology to create the panel. The prototype has a resolution of 1600x1200 pixels and a brightness of 400 cd/m2. The power consumption is 10W (when 30% of the display is white). The company also introduced a 2,2 inch organic EL panel for mobile phones for the first time. The panel has a QVGA resolution (320x240 ppi). The best mode for it is 180 ppi with a brightness of 150 cd/m2 when the power consumption is 150 mW. ... >>

Sound without speakers 22.05.2004

Puren GmbH, Siemens and Bayer MaterialScience AG have teamed up to create "pursonic" - a new sound technology consisting of a thin sound plate inserted into walls to create sound without speakers - the sound source is the walls, ceiling and floors in any room. Moreover, the presence of coatings on these surfaces is permissible. The sound plate with a thickness of about 7 mm is made of special polyurethane. The principle of operation of the device is not disclosed. It is only known that instead of the speakers, the above surfaces begin to vibrate. ... >>

Typhoon Portable DVD Player 21.05.2004

Anubis-Typhoon, a manufacturer of multimedia accessories, has released its first portable DVD-nneep. Typhoon PORTI 7" is equipped with a 7" rotatable TFT display with an aspect ratio of 16 to 9. Built-in stereo speakers are provided for sound output. AC-3 decoding is supported. Dolby Digital. DTS Digital. There are 14 keys on the body of the player to control the main functions, and a remote control with 44 keys is also included in the kit. It supports DVD (2x), CD (4x), as well as CD-R, CD-RW, DVD-R/RW with a diameter of 8 and 12 mm, DVD, SVCD, VCD, Dolby Digital formats are played. DTS.CD-DA. JPEG, MP3. According to the manufacturer, the charge of the bundled batteries is enough to play two DVDs. The cost of the player is about 300 euros. ... >>

miniSD adapter 20.05.2004

Matsushita Electric Works is launching a miniSD memory card adapter that can be used in devices with a standard SD memory card slot. The adapter is equipped with a special "push - in lift - adopting out mechanism" that prevents the miniSD card from accidentally falling out of the adapter when inserting and removing it from the SD slot. The adapter will go on sale from April 20, 2004 at a price of 305 yen, which is approximately equal to 3 USD. ... >>

Intel Audio Solutions 19.05.2004

Intel has announced the final version of the specification version 1.0 of Intel High Definition Audio Technology (codenamed Azalia), which will replace the AC 97 specification in motherboards. This technology is demonstrated at the last IDF. will be integrated into Intel i915 and i925 chipsets, it will support 192kHz/32-bit sampling rate. eight channels and standard Dolby Pro Logic Their. A hitherto unseen innovation will be the Jack Retasking function, which will allow the sound system to automatically detect the type of connected equipment - be it a microphone, headphones or something else. As for support for game 3D sound, everything here will remain at the level of support for EAX 2.0. while EAX 3.0 will remain the privilege of Creative Sound Blaster audio cards for now. It also became known about the conclusion of partnerships between Intel and Musicmatch. In the future, Intel-made motherboards will ship with the Musicmatch Jukebox software. Musicmatch Radio, Musicmatch MX and M ... >>

Wacom professional graphics tablets 18.05.2004

Wacom USA has announced the price of the Cintiq professional graphics tablet. The novelty is a high-quality LCD display with a touch panel, on which you need to manipulate a special "stylus" with 512 levels of sensitivity. With Cintiq 15X (15", 1024x768 pixels) and 18SX (18". 1280x1024 pixels), you can draw figures of any complexity. The highlight of these tablets is the ability to instantly view your own creation. Cintiq can be used as a monitor at the same time. The cost of 15X and 18SX is about 1900 and 2500 USD respectively. ... >>

Upgradable Dual Layer DVD+/-RW Writer from Benq 17.05.2004

Benq has officially unveiled the world's first upcoming DW822A Dual Layer DVD Writer with DVD-R 4X and DVD+R 8X write speeds. Why future? The fact is that the purchased new drive does not yet support the possibility of two-layer recording. In fact, Benq clarified that the DW822A will not be able to get a full-fledged double-layer until September 30, 2004, when a corresponding firmware update appears on the benq.com website. Apparently, this is connected with the fact that full-fledged DVD+R 9 devices will be officially announced only in July of this year, and their popularization and, accordingly, media can be expected no earlier than autumn. ... >>

TLP-T71U projector from Toshiba 16.05.2004

Toshiba has officially announced the TLP-T71U document camera projector for educational institutions. The brightness of the Toshiba TLP-T71 U is 2000 ANSI Lm with a contrast ratio of 400:1. The projection system is based on three 0,7" LCD matrices with a real resolution of 800x600 (SVGA). The device is equipped with a 165 W lamp. This model has the ability to digitally zoom 10 times with a computer connection and 3 times with a component connection. Noise level The T71U is 37dB in normal mode and drops to 33dB in eco mode The projector measures 358x206x84mm and weighs 2,7kg. ... >>

Duplex scanning with HP Scanjet 5590 15.05.2004

Canon Europe has announced the launch of the new iR 1500 series, three models of high resolution multifunction printers designed for the small office. The iR 1500 series consists of three different models iR 1510/1530 and iR 1570F. Network printing at 15ppm and high resolution 2400x600dpi is available as an option. The Super G3 fax modem transmits a fax message at a high speed - 1 page in 3 seconds. In addition, the iR 1500 Series provides a number of features to help the user save time. So, thanks to electronic sorting, the separation of documents into copies takes place in the printer itself, and the automatic document feeder can immediately scan all multi-page originals. freeing up time for more important tasks. Finally, the printer does not work with cartridges, but only with toner, which increases the service life and eliminates the need to frequently buy and replace expensive ... >>

Universal card reader 14.05.2004

Pretec has demonstrated the world's first card reader that supports 4-bit MMC 4.0 format cards, which achieves an access speed of about 26 MB / s. This speed is higher than that of existing card readers today. The new card reader supports most flash card formats such as CF I & II (or 1" HDD). SmartMedia. MMS, MMS 4.0 (4-bit mode), SD, MS, MS-Pro, and is currently CBOCI's most versatile device of the class. ... >>

Philips key019 keychain camcoder 13.05.2004

Philips miniature camcorder called key019 is 8.75 cm high, 3 cm wide and less than 2 cm thick. It weighs about 50 g. Kopin's unique microdisplay acts as a viewfinder, reportedly capable of storing 2 minutes of MPEG-3 video, or up to 25 images, or up to 4 hours of music. . ... >>

MobileSafety phone with one button 12.05.2004

The MobileSafety device from ADT Security Services has become another attempt to cross between a cell phone, a GPS satellite navigation system and rescue services. The main feature of the novelty is that the user has only one red button, pressing which automatically connects MobileSafety to the ADT crisis center. Further actions depend on the specific situation - the satellite navigation system automatically determines the location of the subscriber and. if he does not give any sound signals, then a rescue service car is sent to him. If the owner of MobileSafety is able to speak, then ADT employees will give him an exhaustive answer on how to get out of this situation. By the way, motorists can also use the service - if necessary, the monitoring service tracks all MobileSafety movements on the earth's surface and allows you to specify the route using a mobile phone or through the ADT website. The cost of new items is 129 USD, monthly subscription ... >>

New Toshiba Projection TVs 11.05.2004

Toshiba has announced a new line of 10 widescreen rear projection TVs based on Texas Instrument's HD2+ chip. All TVs are no thicker than 16 inches, with picture quality comparable to flat-panel plasmas, but at a significant price advantage. Toshiba said that having the built-in Toshiba Advanced Light Engine (TALEN) technology will allow unprecedented quality to be squeezed out of the HD2+ chip. The new TVs are also equipped with the PixelPure Digital Video Processing Suite, which can process images with up to 6,2 million pixels, which corresponds to the maximum resolution of new products. The screens feature Toshiba's proprietary "TheaterFine" coating, which ensures glare-free and deep blacks. ... >>

USB stick by PNY 10.05.2004

PNY released a dual purpose device - the Executive Attache. It looks like an ordinary ballpoint pen, which, however, has one advantage over the usual ones - a built-in flash memory with a capacity of 128 MB. The novelty is connected to a computer via a USB 2.0 interface and is similar in use to other similar USB drives. Sales of PNY Executive Attache have already begun, the estimated retail price is about 70 USD. ... >>

Electronic innovations in service in Iraq 10.05.2004

By decision of the Pentagon, two military electronic novelties were sent to Iraq at once: a sensor that determines the direction from which the shooting is being carried out at a given point and a “command post of the future”, designed to speed up decision-making and minimize unnecessary movement of commanders. The sensor monitors the sound waves from the shot and determines the location of the shooter. In practice, the device showed 20% accuracy, but according to the military, 20% is better than nothing. The command post of the future is a wireless network of computers with specialized systems for computer 3D modeling of combat operations and voice communication. Among the nearest HiTech novelties of the military sector of DARPA are underwater holographic systems for submarine camouflage and artificial human tissues for testing vaccines against biological and chemical weapons. ... >>

DVD player with video editing capability 09.05.2004

The San Francisco Chronicle reports that Kmart and Wal-Mart plan to start selling a new Thomson DVD player in the next couple of months. The novelty will allow you to edit video information at the output. The DVD player uses special technology that can automatically skip scenes of sex, violence or profanity, which are already very annoying to Hollywood. The expected price of a new DVD player is 80 USD. ... >>

Beta Music Audio Systems by Infinity 08.05.2004

Infinity has released a series of music audio systems Beta. The Beta series uses the new Ceramic Metal Matrix Diaphragm (CMMD) technology and Constant Acoustic Impedance (CAI) waveguide technology. According to Infinity, CAI technology increases tweeter sensitivity and dynamic thrust to create "seamless" sonic transitions between high and low frequencies. This allows you to create a uniform frequency response across the entire spectrum. The CMMD tweeter extends the frequency response beyond 40 kHz, producing a clearer high frequency sound. The Beta series consists of two models Beta 10 (499 USD/pair) and Beta 20 (499 USD/pair); two floorstanding models Beta 40 (1199 USD/pair) and Beta 50 (1499 USD/pair), two models for medium channels Beta С250 (349 USD) and Beta С360 (499 USD), and the ES250 rear model for monopole, bipole and dipole surround modes (499 USD). ... >>

Far vision through phone 08.05.2004

The South Korean company SK Telecom has offered a new service to cell phone owners. Now the happy owner of a mobile handset, who has paid for the corresponding service, will receive an SMS-message that an intruder has entered his house. For this, a motion-detecting webcam located in a protected area is used, connected to the Internet via a wireless broadband connection. If necessary, the subscriber can independently initiate a "video session" with the protected premises, having received a live "picture" from the web-camera on his phone. Each such "video request" will cost the "inquisitive" owner of an apartment or office 0,26 USD. Test operation of service was planned to begin in April. ... >>

30" HDTV LCD Panel 07.05.2004

In the coming months, Sampo will launch a 30" HDTV LCD display with a base resolution of 1280x768 and a contrast ratio of 500:1. Y/C Digital Comb Filter LCD panel provides picture-in-picture, 3W stereo sound and a full complement of video inputs and outputs (AV/VGA/DVI). ... >>

Images are projected onto clean air 07.05.2004

A small American firm "102 Technology" has developed a method for projecting images into clean air. The projector can work as a TV or computer monitor. Screenless projectors are known to throw an image onto a curtain of laminar fog or steam, but here a high-quality color image appears simply in the air above the projector. So far, only two prototypes of the projector have been made: one gives an image with a diagonal of 105, the other - 38 centimeters. The image can be interactive, that is, you can use your hand, like a computer mouse cursor, to drag file icons and turn on one or another computer function. Since the patenting of the device and process has not yet been completed, the company representatives do not give out a secret. They only say that a laser is used and that for work the projector passes air through itself without adding anything to it. ... >>

Protect the snows of Kilimanjaro 06.05.2004

The snows of Kilimanjaro are melting. Now their area compared with 1912 has decreased by more than 80 percent and amounted to only 2,5 square kilometers. English climatologist J. Nisbett proposes to cover the remaining snow cap of the mountain with a white polymer film to stop the melting. It will need 50-100 tons. But other experts are skeptical about this proposal and believe that the film can, on the contrary, accelerate the melting, acting as a cover for the greenhouse. It's not the heat of the sun, they say, but the fact that the forests that grew on the slopes of this extinct volcano have been cut down. From this, the humidity of the air surrounding Kilimanjaro decreased, and the growth of the ice cover stopped. ... >>

Remote Light Switch 06.05.2004

We are already accustomed to commanding a TV or music center without getting up from the sofa, using the remote control. The products of the Belarusian company "Nootekhnika" also allow you to control the lighting of the apartment. Switch "Sapphire" responds to the signals of any remote control. With it, you can not only turn the light on and off, but also smoothly adjust its brightness. The switch on the wall allows you to control the light even without a remote control by touching the switch plate (touch control). In addition, "Sapphire" has the function of protecting the apartment. During your absence, it will turn on and off the light in the room at random intervals, giving the impression that someone is in the apartment. In any case, the light will automatically turn off after 12 hours. ... >>

Anti-printer recovers paper from copies 05.05.2004

Printed documents or photocopies, which are no longer needed, make up 40 percent of the waste from the activities of various offices in Japan. The Japanese company "Toshiba" has proposed a way to turn unwanted sheets of paper printed on a laser printer or copier into pristine ones. To do this, it is enough to charge a special powder paint into the printer, which discolors when heated. In addition, you need a simple apparatus that looks like the same copier. It heats sheets of paper up to 140 degrees Celsius, causing the print to discolor. It takes 400 hours to process 500-3 sheets of regular typewritten format. ... >>

Pond under the film 05.05.2004

The Canadian firm "Flexible Solutions" proposes to protect reservoirs from too much loss of water to evaporation by covering the water with a thin film of organic matter. For this, fatty alcohols are used - hexa-decanol and octodecanol. Their molecules have two ends - hydrophobic and hydrophilic. When fatty alcohol enters the water, the hydrophilic ends are attracted to the water, and the hydrophobic ends stick out, as a result, a monomolecular film is formed over the entire surface. As shown by field experiments in India and Morocco, evaporation can be reduced by 30-45 percent. In one reservoir with an area of ​​650 hectares, this allowed saving 199 cubic meters of water in two weeks. Fatty alcohols are considered non-toxic and do not spoil drinking water (at least in the concentrations used). However, the long-term environmental impacts of using the Canadian method have not yet been studied. It is possible that a decrease in evaporation will lead to a heating of the water mass. The film can reduce gas ... >>

watch for diabetic 04.05.2004

The Japanese company "Sanyo" has launched the production of a wrist blood glucose meter "Glucowatch". This device is worn on the arm like an ordinary watch (among other things, it also shows the time). Every ten minutes Glucowatch, without piercing the skin, measures the level of glucose in the blood. According to the manufacturer, a weak electric current "draws" glucose from the blood through the skin, and glucose accumulates in a special gel, where it reacts with a chemical sensor. This measuring part, adjacent to the skin of the hand, needs to be replaced every 13 hours. On the device, you can pre-set the maximum and minimum indicators, upon reaching which the Glucowatch will give an audible alarm. More than 8000 measurement results are stored, which can then be downloaded to a computer. As the firm emphasizes, Glucowatch does not replace conventional blood glucose tests, but complements them and makes it possible to conduct tests less often. ... >>

Cosmic rays to help customs officers 04.05.2004

Konstantin Borozdin from the Los Alamos National Laboratory (USA) and his collaborators propose to use not X-rays, but radiation penetrating the Universe, cosmic rays, to scan suspicious cargo at customs. The checked baggage is placed between two cosmic ray detectors - flat ionization chambers with thin strings stretched inside and filled with argon. Cosmic rays ionize the argon, and current discharges jump between the strings. Comparing the discharges in the upper and lower chambers, the computer builds a picture - the shadow of metal objects in the luggage. Thus, using large ionization chambers, it is possible to shine through at least a whole truck. Heavy metals are especially visible. ... >>

Life in the city is healthier than in the countryside 03.05.2004

Approximately this conclusion was led by a study carried out by the National Center for Intelligent Growth at the University of Maryland (USA). Collected data on the health of more than 200 thousand residents of 83 large American cities and 448 administrative districts, consisting of small towns, towns and individual farms. It turned out that the closer to nature the landscape of the area, the higher the average weight of its inhabitants. A resident of a large city is on average three kilograms lighter than a "villager" (for all the conventionality of this term for modern America), he has lower blood pressure, he is less likely to get diabetes and walks more. According to the head of the research team Reid Ewing, the whole point is precisely in this last feature of behavior. In cities, everything is closer - and shops, places of entertainment, and even work are often within walking distance. And a resident of the countryside is forced to go to work, shopping, and going to the cinema by car. ... >>

DNA and French cooking 03.05.2004

Real delicacy truffles (and in France truffles from Perigord are considered the best) now cost up to 1000 euros per kilogram. The rarest white Italian truffles from Piedmont - even up to five thousand. But in recent years, they have been competing on the European market with much cheaper low-quality Chinese truffles, outwardly indistinguishable from real ones even for a specialist. The difference is felt only in the cooked dish. Chinese mushrooms lend themselves to mass cultivation and cost up to 20 euros per kilogram. Often they are sold under the guise of French. In addition, Chinese truffles pose a danger of ecological aggression: they grow much faster than European ones, and if their spores get into the forest soil, the Chinese species can displace the European one. The Institute for Agricultural Research in Clermont-Ferrand (France) has developed a simple mushroom DNA test method that can reliably distinguish cheap Chinese from noble truffles. The analysis is recommended to be carried out by wholesalers when purchasing pain ... >>

On the river - like on the highway 03.05.2004

The English company "Gibbs Technologies" began serial production of the sports car-amphibian "Aquada". The transition from land to water takes 6 seconds: just press the button - and the wheels retract, the car is afloat. Another 5 seconds - and "Aquada" enters the redan, gliding at a speed of up to 55 kilometers per hour. Movement on water is provided by an original hydrojet installation. Speed ​​on land - up to 160 kilometers per hour. The fuel supply in the tank on land is enough for about 500 kilometers, on water - for 100 kilometers. ... >>

Pigeons over the highway 02.05.2004

In the early years of the development of aviation, pilots often flew without maps and navigational instruments, following the lines of railways and highways. According to ornithologists from Oxford University (England), pigeons use the same strategy. The researchers provided more than fifty pigeons with miniature radio beacons, took the birds away from their native dovecote and released them. It turned out that on long stretches of the way back, many pigeons followed along the roads. So, one bird flew to the junction on the road, turned right, and at the next junction - to the left. Then she left the highway and flew straight through the fields. With such maneuvers, the path, unlike a straight line, could be lengthened by twenty percent, but, apparently, nervous energy was saved. Following the road with your eyes is easier than using a navigational "sixth sense". As far as we know now, carrier pigeons use the Earth's magnetic field, the position of the Sun and stars, and even the sense of smell to navigate. According to Oxford ornithologists, the magnet ... >>

To drink or not to drink 02.05.2004

As soon as doctors began to say that moderate regular alcohol consumption improves the condition of the heart and blood vessels, it turned out that it harms the brain, and in addition - the blood vessels. Employees of a psychiatric clinic at the University of the German city of Erlangen found that alcohol disrupts the processing in the body of the amino acid homocysteine, which is harmful to nerve cells. It is obtained in the process of metabolism as an intermediate product and is soon processed into harmless compounds. But alcohol blocks this transformation, and homocysteine ​​gradually accumulates in the brain tissue. Occasional and infrequent drinking raises homocysteine ​​levels only slightly, but drinking regularly, even in small amounts, damages nerve cells. In addition, homocysteine ​​makes the walls of blood vessels looser, rougher, and then cholesterol plaques are more easily formed on them. ... >>

Camera with glasses 01.05.2004

The prototype of glasses with a digital camera was designed in the laboratories of the American company Hewlett-Packard. An original shooting principle was used: the device works constantly, making five frames per second, and the captured frames are recorded in memory and, as it overflows, are replaced with new ones. When the owner of the glasses wants to take a picture, he presses the button on the frame, and after five seconds, the shooting process stops. The device's memory stores the last 25 frames before the "shutter release" and another 25 taken after pressing the button. The amateur photographer can choose the best of 50 shots. ... >>

Laser against dust 01.05.2004

Removing dust from exhibits is a big problem for every museum. Delicate art or wildlife is easily damaged by touching a damp cloth or vacuum cleaner brush. The Natural History Museum in London is testing a laser dust removal method. You can choose a wavelength of the laser beam that is well absorbed by the dust, but not by the surface of the processed exhibit. Then the dust simply evaporates, and the exhibit remains untouched. The laser is fast. For example, a hornet's nest the size of a soccer ball can be dusted off in 2-3 minutes. Dust is well removed from herbarium leaves, bones and fossils. ... >>

Water and oil mix 01.05.2004

Australian chemist Richard Pashley discovered that oil does mix with water. But for this, it is necessary to remove the gases dissolved in it from the water. If the water is 99,999 percent devoid of gases, then by itself, without the addition of emulsifiers and surfactants, an oil-in-water emulsion occurs. Moreover, it does not delaminate even when the dissolved gases return to the water. The discovery will be useful in pharmaceuticals, perfumery, cooking and other areas. ... >>

N-Channel MOSFET Type STx9NK60ZD 30.04.2004

ST MICROELECTRONICS has developed STx9NK60ZD n-channel MOSFETs for use in HID lamp drives, electronic ballasts and power supplies. The devices are designed for a voltage of 600 V, a drain current of 7 A and an open resistance of 0,85 ohms. Transistors are available in TO-220, TO-220FP and D2PAK packages. ... >>

ZL10313 Quad Phase Modulation Demodulators 30.04.2004

ZARLINK SEMICONDUCTOR has developed and manufactures ZL10313 quadrature phase modulation demodulators for digital satellite television systems. The new demodulator is fully pin-compatible with the previous instrument. It is compatible with all MPEG decoders. ... >>

New infrared emitting LEDs up to 180 MW/ster 29.04.2004

VISHAY INTERTECHNOLOGY produces new infrared emitting LEDs with an emission power of up to 180 mW/ster. The instruments operate at a wavelength of 870 nm. The TSFF5410 has a beam angle of +22° and a power of 70 mW/Sr. The TSFF5420 has a beam angle of +10° and a power of 180 mW/Sr. Both devices work with modulation frequencies up to 23 MHz. ... >>

SD-M1912 - new DVD-ROM driver 29.04.2004

TOSHIBA ELECTRONIC COMPONENTS introduced a new DVD-ROM driver type SD-M1912. The driver provides read speeds of 16X for DVD-ROM (21600 Kb/s), 2X for DVD-RAM (2700 Kb/s) and 48X for CD-ROM (7200 Kb/s). All existing DVD and CD formats are supported. Driver dimensions 148x42x184 mm, weight 0,74 kg. ... >>

PCI7621 Flash Media Speed ​​Controller 28.04.2004

TEXAS INSTRUMENTS Corporation has introduced the fastest and most integrated Flash Media controller type PCI7621. The controller supports a range of technologies related to chip cards, multimedia and a range of AV applications. The controller interface provides multiple configurations for maximum application flexibility. Available in BGA-288 packages. ... >>

Monitoring system NET-GPRS 4.4 28.04.2004

TEKTRONIX Corporation has announced a new application of its GPRS monitoring system called NET-GPRS 4.4. In this system, data is distributed between the mobile station and the external data packet circuit. This makes it possible to use e-mail, sending texts and even the Internet in GSM mobile phones. ... >>

SAMSUNG High Performance High Capacity Chip Cards 27.04.2004

SAMSUNG ELECTRONICS Corporation has developed a technology for the production of high-performance high-capacity chip cards (capacity of non-volatile memory 256 Kbytes) S3CC9EF chip card chips allow the use of chip cards for a wide range of applications: user identification modules, GSM mobile phone modules, multimedia products, electronic passports etc. The corporation began mass production of hard drives with increased resistance to external factors. The new hard drive uses tin-silver solder instead of standard solder. Special anti-shock mounts are also used. Next year, the corporation is going to equip 65% of its PCs with new hard drives. ... >>

Ferroelectric non-volatile memory FM25L256 27.04.2004

RAMTRON presents a new ferroelectric non-volatile memory FM25L256 with a capacity of 256 KB and a +3 V supply. The microcircuit has an SPI interface. The data writing speed corresponds to the speeds of modern RAM (up to 25 MHz). The microcircuit has an operating temperature range from -40 to +85°C. Available in SOIC-8 package. ... >>

TDA8939TH - reference source for setting up a class D digital power amplifier 26.04.2004

PHILIPS SEMICONDUCTOR introduced the TDA8939TH class D digital power amplifier reference source. The device can develop power at a load of up to 140 W at supply voltages from +10 to +30 V. ... >>

NCP2809 Dual Stereo Amplifier Chip 26.04.2004

ON SEMICONDUCTOR has launched the production of microcircuits for the NCP2809 dual stereo amplifier with a power of 135 mW each for headphone operation. The microcircuit has a supply voltage range from 2,2 to 5,5 V, operates on a load of 16 ohms. Requires a minimum of external attachments. Available in a 10-pin Micro-10 package. ... >>

LMH6533 - laser diode driver 25.04.2004

NATIONAL SEMICONDUCTOR has released a new LMH6533 laser diode driver for use in DVD and CD systems. It contains two high current outputs for reading and writing DVDs (650nm wavelength) and CDs (780nm wavelength). Switching time 0,5 ns. ... >>

New Omnitrak fingerprint identification system 25.04.2004

MOTOROLA Corporation has developed a new Omnitrak 9.x fingerprint identification system. A distinctive feature of the system is the ability to access the fingerprint catalog of the Federal Bureau of Investigation. In addition to fingerprints, the system can also identify by the shape of the palm and face. ... >>

8-bit microcontrollers PIC12F635 and PIC12F636 24.04.2004

MICROCHIP TECHNOLOGY announced the release of the first two 8-bit microcontrollers PIC12F635 and PIC12F636 with built-in KEELOQ cryptographic peripherals. Microcontrollers are designed specifically for encryption and identification systems. The KEELOQ technology is a non-linear encryption algorithm that generates non-repeating sets of codes for each case. The PIC12F635 microcontroller is available in 8-pin PDIP, SOIC, DFN-S packages, the PIC12F636 microcontroller is available in 14-pin PDIP, SOIC, TSSOP packages. ... >>

LT1990 Micro Power Differential Amplifier 24.04.2004

LINEAR TECHNOLOGY has released a micropower differential amplifier LT1990 with an input voltage of up to +250 V. It is possible to select the gain in the range from 1 to 10. The main application of the microcircuit is to connect powerful motor control systems to current sensors. The microcircuit has a frequency band of up to 100 kHz, is available in the S0-8 package. ... >>

Ultra-bright yellow LED L-7113WYC 23.04.2004

KINGBRIGHT has released an ultra-bright yellow L-7113WYC LED in a 5 mm package with leads. The LED has the following characteristics: brightness at a current of 20 mA 2500.3500 mkad, viewing angle 20°, direct voltage drop 2,3.2,8 V. The maximum allowable current is 30 mA, while the LED dissipates power 120 mW. The device operates in the temperature range from -40 to +85°C. ... >>

New series of PWM controllers for AC-DC and DC-DC converters 23.04.2004

INTERSIL has released a series of PWM controllers for AC-DC and DC-DC converters ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845. The devices differ in the maximum PWM coefficient (duty cycle) and operating voltages. A distinctive feature of the series is a high switching frequency - up to 2 MHz, high output current and absorption current - up to 1 A, a wide operating temperature range from -40 to +105°C. Chips are available in MSOP-8 and SOIC-8 packages. ... >>

IRAUDAMP1 - new powerful device 22.04.2004

INTERNATIONAL RECTIFIER has announced a new high-power device IRAUDAMP1, which is a reference source for debugging the IR2011S high-power high-frequency driver chip. The device contains an oscillator with PWM, operates in a wide range of supply voltages +25...60 V, develops a power of 100 W at a load of 4 ohms with a coefficient of non-linear distortion of 0,008%. Protection circuits are triggered by overvoltage and overcurrent. The IR2011S driver itself is a class D audio amplifier with an output power of 100...1000 W and is available in a DIP-8 or SO-8 package. ... >>

Fully functional 70 Mbit static memory chip 21.04.2004

Intel Corporation announced the creation of a fully functional static memory chip with a capacity of 70 Mbit. At the same time, about a billion transistors were placed on a chip with an area of ​​110 mm2. This was done thanks to the new 65-nm technology. The transistors have a 35nm gate, which is 30% smaller than the previous 90nm technology. The new technology also includes several unique features to reduce power consumption and improve performance. ... >>

17" touch screen panel with 7-wire communication system 20.04.2004

FUJITSU COMPONENTS has developed a new 17-inch touch screen panel with a 7-wire communication system. Such a system makes it possible to implement 10 times more resistance on the panel than in the case of a 4-wire transmission system. The new panel has a transparency of 80%, provides linearity within 1,5%, and operates in a temperature range from -5 to +60°C. ... >>

New FLUKE 87V Digital Multimeter 20.04.2004

FLUKE Corporation has introduced a new 87V digital multimeter. A feature of the new device is the ability to measure real levels of PWM signals in motor drivers. Variable voltages, frequency and alternating current are measured. The device has a built-in thermal sensor, thanks to which a decision is made whether the measured voltage or current at a given temperature is dangerous for the operation of the driver and motor. The device has a magnetic suspension, thanks to which the operator can fix the device on any steel part, and his hands will be free. The bright backlight of the indicator allows you to work in poor lighting conditions. ... >>

FMS6407 - video driver filter 19.04.2004

FAIRCHILD SEMICONDUCTOR announced the release of the FMS6407 video filter driver, which can handle both high definition television (HD), standard interlaced and progressive scan formats. The microcircuit contains a triple 6th order filter with cutoff frequencies of 30, 15 and 8 MHz. For PC monitor applications, these filters can be bypassed to achieve a wider bandwidth (80 MHz). The chip includes a 2x1 multiplexer to enable YPbPr/RGB or YPbPr/YC-CV video formats, when switching, synchronization is automatically adjusted. The microcircuit is produced in the TSS0P-20 package. ... >>

XV-3500CB Ultra Small Gyro Sensor 19.04.2004

The ultra-small gyro sensor EPSON XV-3500CB with dimensions of 5x3,2x1,3 mm has the following features: operating voltage from 2,7 to 3,3 V, angular velocity range up to 100 deg./s, sensitivity 0,67 mV/deg./s, linearity +5%. The gyro sensor is intended for use in miniature devices (video cameras, camera phones, etc.). ... >>

MOSFET driver type MAX5078 18.04.2004

The new MAX5078 MOSFET driver from DALLAS SEMICONDUCTOR-MAXIM operates with supply voltages from 4 to 15 V, can output or absorb current up to 4 A per pulse. Designed for ultra-small power supplies. Available in 6-pin 3x3mm packages. It has two modifications: with CMOS inputs (MAX5078A) and with TTL inputs (MAX5078B). ... >>

Signal transmitters up to 1,5 Gbps 18.04.2004

CYPRESS Corporation offers a wide range of CYP1,5 signal transmitters up to 15 Gbps. The transmitters interface with many industry standards such as Ethernet, Gigabit Ethernet, High Definition Television (HDTV), ESCON, DVB, SMPTE, and more. ... >>

B&K PRECISION 1541D Dual Channel Oscilloscope 17.04.2004

The new B&K PRECISION 1541D dual-channel oscilloscope has a bandwidth of up to 40 MHz, a sensitivity of 5 mV/div, a 15 cm screen. It can handle input voltages up to 400 V. The instrument measures 324x398x132 mm and weighs 7,6 kg. ... >>

AT90SC12872RCFT microcontroller for personal identification devices 17.04.2004

ATMEL Corporation has introduced a new microcontroller AT90SC12872RCFT specifically for the personal identification market. The microcontroller has 72 Kbytes of non-volatile memory for storing identification data, as well as 128 Kbytes of permanent memory for storing programs. The microcontroller has two contact interfaces and one contactless. There are security features that prevent data from being overwritten. ... >>

New series of ultra-bright white LEDs HLMP 16.04.2004

AGILENT TECHNOLOGIES announced the release of new series of ultra-bright white LEDs HLMP-CWxx and HLMP-FWxx. The HLMP-CWxx series has a round radiating part, while the HLMP-FWxx has a flat one. LEDs are produced with 15, 23, 30, 50, 70 and 85° radiation sectors. Are calculated on work in external conditions in the range of temperatures from-40 to +85 °C. Designed for the design of road signals and signs, scoreboards for stadiums, etc. ... >>

Canopus pocket TV tuner 16.04.2004

Only recently, key fobs have found built-in screens and become more or less convenient, and Japanese manufacturers have already begun producing key fobs with Canopus USTV digital TV tuners. Such a keychain, of course, is somewhat larger than the average keychain player, but not by much. Overall dimensions are 100x45x25 mm, weight - 80 g. In terms of functionality, it is not inferior to PCI-versions of TV receivers, including the QSTV2004 board presented simultaneously with it. The tuner can receive programs in the meter and decimeter ranges and output video with a resolution of up to 720x240 pixels. Antenna input, S-Video input, audio input and mini-jack audio output (3,5 mm) are available. However, since USTV2004 is for the Japanese market, it does not support PAL or SECAM, only NTSC. However, if the new product is considered a success, it is likely that Canopus will release modifications to other standards or simply put the appropriate firmware on the site. As with external CDs or DVDs ... >>

Olympic video recorders 15.04.2004

Hitachi intends to increase its share in the hard disk video recorder sector. Currently, all manufacturers producing this type of product are limited to installing HDDs, the volume of which does not exceed 250 GB. Hitachi decided to take a step forward and start producing five models of video recorders at once, whose built-in hard drive will have a capacity of 300 GB. The release of new models is scheduled for May, but the company's plans go further. As early as June, Hitachi video recorders with a 400 GB hard drive and possibly even more will be on sale. According to the company's management, large volume discs will attract those buyers who intend to record the Olympic Games, which will be held in August in Athens, on home video. ... >>

Wristwatch with built-in MP3 player and recorder 15.04.2004

A watch with a built-in MP3 player and recorder has appeared in the Japanese online store Rare Mono Shop for rare and unusual devices. MP3 UltraDisk Watch has a USB port, an audio output for headphones, control buttons and an LCD display with 7 types of backlight, which displays the time, battery charge, date and musical compositions. Built-in memory capacity MP3 UltraDisk Watch - 128 MB, the connection to the computer via USB interface, you can download music in MP3 and WMA formats to the watch. Recording is in WAV format, maximum can be recorded up to 9 hours. Dimensions UltraDisk Watch - 43x52x16 mm, weight - 50 grams. The cost is 17640 yen (160 USD). ... >>

Six channel 5.1 headphones 14.04.2004

An interesting novelty has appeared in the Rare Mono Shop online store - 5.1 type headphones with a built-in amplifier and sound processor. 5.1 USB Headphones are connected to a computer via a USB interface. "Phones" provide a realistic environment, thanks to the additional speakers located on the right and left "ear" side, so the total number of speakers is 6 pieces. Output power - 100 mW x 2 channels + 50 mW x 4 channels, reproducible frequency range - 20 Hz ... 20 kHz, headphone weight - 100 grams. The package includes WinDVD with support for 6-channel mode. The cost of "volumetric" headphones is 76 USD. ... >>

Nokia CDMA phone with GPS module 14.04.2004

In addition to high-quality VGA resolution photos, the camera is capable of recording video with sound and then transmitting it via the Internet. Photo and video frames are stored on the MMC "flash drive", the maximum supported card size is 64 MB, its official data, and users of NOKIA phones managed to use 128 MB cards. NOKIA 6255 is also one of the first CDMA handsets to support Bluetooth wireless interface, allowing users to synchronize contacts with other devices and use a Bluetooth headset. The communicator supports CDMA 800/1900/AMPS and can work with E911 GPS-module (satellite navigation). ... >>

Wrist TV by NHJ 13.04.2004

NHJ has released a wrist watch with a large color display and a built-in TV tuner - VTV-101. Diagonal LCD screen -1,5", resolution - 280x220 pixels (22,2x29,5 mm). Dimensions of the watch itself - 45,7 x 18,2 x 49,4 mm, weight - 55 grams. VTV-101 is capable of receiving VHF 1 - 12 channels, UHF 13-62 channels.MicroTV receives TV programs in the meter and decimeter bands, and the headphone cord acts as an antenna.The maximum operating time of the device from the built-in lithium-ion polymer battery in the mode of receiving TV programs is about one hour, and up to three hours when using additional batteries placed in an external case.The package includes a power supply unit with a built-in charger.The time to fully charge the built-in battery is about half an hour.In addition to receiving television programs, the novelty can also act as an ordinary wristwatch, moreover, if the battery charge is no longer enough to show TV programs, the clock continues to display ... >>

Photo recognition determines your exact location 12.04.2004

Are you lost in an unknown city abroad and do not know the language? Take a photo of the nearest building with your mobile phone and send it to the web. A photo recognition program on a remote server will pinpoint your exact location and send you instructions on how to proceed. University of Cambridge (UK) researchers Roberto Chippola and Duncan Robbergson have developed a program that compares photographs of buildings with images from a database of 10D street models. If satellite-based global positioning systems (GPS) locate you with an accuracy of 50 m at best, and systems using mobile phones with an accuracy of 100 ... 1 m, for this system this figure is XNUMX m. When an image is acquired, the system begins to determine vertical and horizontal lines. It then rotates it to a precise vertical position and identifies useful details such as window and door angles, colors, and so on. and ve ... >>

External DVD recorders from IO Data 12.04.2004

IO DataI-O Data has announced the DVRP UT4 and DVRP-UN4 portable DVD writers. The recorders will be available for sale at the end of April, but for now the drive will be sold in Japan. They cost 33390 yen and 28875 yen, or approximately $285 and $260 respectively. The DVRP-UT4 uses a TEAC DV-W24E drive, connects to a computer via a USB 2.0 interface, and can burn DVD-RAM discs at 2x speed, DVD-R at 4x, DVD+R/RW at 4x. DVD-RW - from 4x. CD-R "blanks" with 16x and CD-RW - with 8x. The DVRP-UN4 is based on the NEC ND-5500A drive. The recorder is connected to the computer via USB 2.0. Unlike DVRP-UT4, UN4 does not support DVD-RAM and "writes" CD-Rs at 16x speed. ... >>

TV screen as thin as a sheet of paper 10.04.2004

Researchers from the Dutch firm Philips propose a new principle for creating flat and thin displays, on the basis of which in the near future they hope to create moving color images on a flexible sheet no thicker than plain paper. A thin "sandwich" of transparent sheets of plastic contains small square cells with a side of a quarter of a millimeter. A transparent conductive layer is applied to the top and bottom sheets. Under the bottom sheet is a white backing. Each cell is filled with a drop of oil in which black paint is dissolved. Normally, the oil spreads with a black film over the entire cell. When an electrical voltage is applied, the film shrinks to the sides of the cell, and the white substrate becomes visible. The higher the voltage, the more the oil recedes to the edges, that is, you can draw a fairly wide scale of gray shades ranging from white to black. Moreover, this reaction takes less than 15 milliseconds, which allows you to display moving pictures. Such a screen can be done as much pain as you like. ... >>

Panic among mice 10.04.2004

When a fire breaks out in a theater or discotheque, it is not uncommon for people to rush to the only exit in a panic and crush each other. Employees of the Philippine University modeled this situation on mice. Six dozen mice, enclosed in a container of water, tried to get to a dry surface through doors of different widths. The dimensions of the exit were changed in such a way that at first one mouse could slip into the slot, then two, three and four at the same time, the distance between the doors was also different. The number of mice in the cage remained unchanged - as soon as one slipped out, they planted another, so that the situation of panic was constantly maintained. It turned out that the mice got out of the trap faster when only one individual could climb through the door: then the animals lined up. As soon as the gap was widened, they began to push and fight each other. As a result, they needed more time to get to a dry place. In addition, when the doors were too close ... >>

Where to find free chocolate 09.04.2004

For some reason, it is believed that the favorite food of mice is cheese, hence even the saying about where exactly it is free. However, British scientists from the University of Warwick found that rodents actually prefer chocolate. Caged mice were offered different foods - they stubbornly chose chocolate. After that, in collaboration with a company that produces products for rodent control, university biologists developed a mousetrap without a bait. It is made of plastic, into which flavoring with the smell of chocolate is introduced. True, after six months the smell disappears from the surface layer of plastic, and then the trap has to be loaded with bait - preferably natural chocolate. ... >>

The phone recognizes the owner in person 09.04.2004

The Japanese company "Earth Beat" has created a program for a cell phone that allows this device to recognize the owner in person. True, for this the phone must have a built-in digital camera, but many models now have it. For the first acquaintance, you need to take a picture, and in the future, every time you turn on the phone, it will compare the image in memory with your face. The person who stole the phone will not be able to call. The company does not say whether this means that it will be impossible to talk on such a phone in complete darkness, or that after each change in hair and makeup, you will have to reacquaint yourself with your phone. ... >>

CD as a dosimeter 08.04.2004

Bulgarian physicists from the University of Kliment Ohridski in Sofia have found that the CDs stored in almost every home can tell what kind of radiation load the inhabitants of the house received. Alpha particles emitted by radon, the most common source of natural radiation in residential buildings built in the mountainous regions of Bulgaria, leave traces in the polycarbonate base of the disc. By etching the plastic with acid, these traces can be enlarged so that they become visible under an optical microscope. Knowing when the disk was purchased and what the average temperature in the house has been over the past years, the number of footprints per square centimeter can be used to estimate the radiation dose with an accuracy of 10 percent. ... >>

Prompter cures stuttering 08.04.2004

Employees of the University of East Carolina (USA) have patented a way to get rid of stuttering. It has long been known that the speech of a stutterer becomes smooth if he speaks with someone together, in a duet. A device like a hearing aid (there are models that fit in the ear canal or behind the ear) perceives the speech of its owner and, having slightly changed the frequency characteristics, produces the same sound with an adjustable delay of 25-100 milliseconds directly to the eardrum. The success rate of correcting a speech defect ranges from 50 to 95 percent. ... >>

alcohol sensor 07.04.2004

The American company "SpectRx" has developed a miniature system for continuous monitoring of the presence of alcohol in human blood. It is possible that such devices will soon be used where drinking alcohol during work can lead to large material and human losses, for example, for pilots or nuclear power plant operators. A special laser perforator makes four shallow holes in the human skin with a hair diameter. The operation is almost insensitive. Then a flat sensor is glued to this place, periodically sucking lymph droplets from the holes. If alcohol appears in the lymph, the sensor reports this by radio to the computer, which raises the alarm. Human trials are already underway, and the practical application of the system could begin in three years. ... >>

Singing stimulates the immune system 07.04.2004

German researchers came to this conclusion. They measured the concentration of type A immunoglobulins in the blood of church choir members before and after an hour-long rehearsal of Mozart's Requiem. It turned out that after singing, the amount of these protective antibodies in the blood of choristers increased. Exactly how singing is associated with increased immunity and how long the positive effect lasts is not yet clear. In a country like Germany, where the art of choral singing has a large following (over 60 registered professional and amateur choirs with 3,2 million members), the impact of singing on disease resistance can be significant. ... >>

Need to sleep not too hard 06.04.2004

Although it is believed that with osteochondrosis it is better to sleep on bare boards, an experiment conducted at the University of Barcelona (Spain) showed that medium firm mattresses are preferable to people with chronic back pain than hard ones. In the experiment, 158 subjects with a long history of low back pain slept on firm mattresses, while 155 slept on medium firm mattresses. They themselves assessed the degree of pain on a 10-point scale. After three months, it turned out that those who slept on moderately hard mattresses had less back pain throughout the day and were less likely to take sick leave for lower back pain. ... >>

Nanotubes repel water 06.04.2004

Trying to create the perfect water-repellent coating for clothing, car windshields or airplane wings to prevent them from icing, MIT researchers have grown a dense layer of carbon nanotubes and coated their tops with Teflon. A drop of water on such a surface forms an almost perfect ball and easily rolls off. True, this superhydrophobic coating is still rather unstable and easily erased. ... >>

Anti antibiotic 05.04.2004

When we take an antibiotic tablet, it dissolves in the small intestine and the drug is absorbed into the bloodstream. But part of the antibiotic reaches the colon, where it destroys beneficial microorganisms. Dysbacteriosis begins, and the normal intestinal microflora has to be restored with difficulty. In addition, antibiotic residues contribute to the cultivation of microbial strains that are resistant to this drug. The Finnish pharmaceutical company Insat has launched a "antibiotic pill". It is an enzyme packaged in a shell that dissolves only in the colon. The enzyme breaks down the so-called beta-lactam antibiotics - this is more than half of all antibiotics used. It destroys the remains of the antibiotic, which can only cause harm. ... >>

Electric glue 05.04.2004

An epoxy-based adhesive made in the USA "releases" when an electrical voltage is applied to the bonding site. A current of 10 to 50 volts after a short time (from one second to one minute, depending on the ambient temperature) causes the bonded parts to separate. The new adhesive has been successfully used to mount sensors and measuring instruments on the wings and fuselage of experimental aircraft. After the flight, the instruments were easily removed, and the paint of the aircraft did not even suffer. It is proposed in the same way to strengthen antennas folded like an accordion and solar panels on spacecraft. After launching into orbit, an impulse is given - and the springs straighten the knot folded during launch. ... >>

Biggest fish 04.04.2004

In a clay quarry near the city of Peterborough (Great Britain), the remains of the largest fish that ever lived on Earth were found. Its scientific name is Leedsichthys, that is, "Leeds fish", after the name of a farmer who, at the end of the 15th century, found the first small specimen. The skeleton now discovered has not completely preserved the tail, so it is difficult to accurately determine the length of this monster during life. But paleontologists estimate it in the range of 30 to 20 meters, most likely around 20, which is twice the length of the largest modern fish - the whale shark. This species, dating back to the Jurassic period, fed, like the whale shark, on plankton. The largest specimen of Leedsichthys known so far occupies 120 museum boxes, and the fossils found now - XNUMX. ... >>

Unused stock of fossil rodent nuts 03.04.2004

In a brown coal open pit near Cologne, Germany, a bucket wheel excavator unearthed a stock of nuts made by some large rodent 17 million years ago. The age of the pantry, possibly left by the ancestor of modern hamsters or chipmunks, is determined to within half a million years by the rate of growth of coal seams from the remains of vegetation. "Klad" consists of 1200 nuts related to chestnut. Now such walnut trees grow only on the Pacific coast of the United States and in East Asia. In the Miocene era, the climate of Central Europe was hot, monkeys and crocodiles were found here. But, judging by the size of the reserves, the rodents already anticipated a cold snap. ... >>

Plumber armed with radar 03.04.2004

The National Institute of Standards and Technology (USA) has developed a portable radar that allows you to find a leak in water pipes without breaking the wall or floor. The device sends a broadband frequency pulse, and the water flowing out of the leaky pipe gives a characteristic reflection. A three-dimensional image of the leak site appears on the radar screen with a resolution of one centimeter. Now the device is being tested on a model of a typical wall of an American cottage - two layers of plywood with glass wool between them, covered with plastic from the street side, and drywall and dry plaster from the inside. Experimenters find out how the material of water pipes and interference from wires embedded in the wall affect the radar readings. ... >>

Glasses with massage 02.04.2004

One of the German firms offers a massage device in the form of glasses, which relieves eye fatigue after prolonged reading or working at a computer. The eyeballs and the area around them are massaged with twenty-two small vibrating magnets positioned so that they fall on the traditional acupuncture points used in Chinese medicine. According to the manufacturer, five minutes of massage a day is enough to relieve eye fatigue, improve vision, eliminate circles under the eyes and fine wrinkles. ... >>

Heating by computers 01.04.2004

The building of the German insurance company Allianz in Munich is heated by computers. The data center in the basement, with its eighty powerful computers, generates enough heat to heat the office space of about 12 square meters, where more than 2000 employees sit. The water temperature in the batteries reaches 55 degrees Celsius, but when the temperature outside the windows drops below one degree of heat, additional energy sources have to be turned on. Nevertheless, 138 thousand euros are saved annually on fuel. Since the company has 60 million customers worldwide, the computers are not in danger of shutting down. ... >>

B flat black hole 01.04.2004

Astronomers at the University of Cambridge (England), studying a giant cloud of gas surrounding the cluster of galaxies in the constellation Perseus, 250 million light-years from Earth, found concentric circles in this cloud. These densified and rarefied regions of gas are only visible in the X-ray range (heated gas generates X-rays). In essence, the researchers say, we are seeing ultra-low sound emitted by a black hole that sits at the center of a cloud of gas. This is a B-flat note, it is 57 octaves below the middle octave audible to the human ear. ... >>

THYZORB family of thyristor devices 31.03.2004

VISHAY INTERTECHNOLOGY announces the launch of the THYZORB family of thyristor charge protection devices in SMD housings. The devices are designed for breakdown voltage from 70 to 395 V and impulse currents up to 100 A. ... >>

Digital Signal Processor C6713-300 31.03.2004

The new C6713-300 digital signal processor from TEXAS INSTRUMENTS delivers up to 1800 million waveform logic operations per second at a clock speed of 300 MHz. ... >>

TDS6000B Series Digital Storage Oscilloscopes 30.03.2004

TEKTRONIX Corporation announced the release of TDS6000B series digital storage oscilloscopes. Oscilloscopes have sampling rates up to 8 GHz (TDS6804B) and 6 GHz (TDS6604B). The duration of the signal recording is 32 Msample. ... >>

STLVD385B - TTL signal transmitter 30.03.2004

ST MICROELECTRONICS' STLVD385B TTL signal transmitter converts 28 bits of video data into 4 LVDS channels to drive a flat panel display. The device supports clock frequencies from 20 to 85 MHz. ... >>

TV SONY KDP57WS550 with a diagonal of 57 inches 29.03.2004

Sony has launched the KDP57WS550 57-inch (143 cm) high-definition TV with a 16:9 aspect ratio. ... >>

New RAMTRON FM4005 processor 29.03.2004

The new FM4005 processor from RAMTRON includes, in addition to the processor itself, a real-time clock, a waiting timer, an event counter, a comparator and much more, which allows you to effectively control automotive, telecommunications, industrial, household and other devices. The processor is available in a SOIC-14 package and operates at supply voltages from 2,7 to 5,5 V. ... >>

SAA6734AHL - controller for liquid crystal displays 28.03.2004

PHILIPS SEMICONDUCTOR announced the release of the SAA6734AHL controller for thin film transistor liquid crystal displays (TFT LCD). The controller is designed for display resolutions up to UXGA (1600x1200 pixels) and supports pixel switching frequency up to 165 MHz. ... >>

Stereo Audio Amplifier NCP2809 28.03.2004

ON SEMICONDUCTOR's NCP2809 Stereo Audio Amplifier delivers 135mW per channel to headphones with a 16 ohm coil impedance. Works with supply voltages from 2,5 to 5,5 V, external on and off, the current in silent mode is less than 5 μA. ... >>

32-bit microcontroller V850E/RS1 27.03.2004

The 32-bit V850E/RS1 microcontroller from NEC ELECTRONICS includes a 10-bit, 16-channel A/D converter with diagnostics. The controller is designed for a clock frequency of 40 MHz, has 256 KB of flash memory and 16 KB of RAM. ... >>

PWM controller DC-DC LM5033 27.03.2004

NATIONAL SEMICONDUCTOR Corporation has introduced the first fully completed LM5033 DC-DC PWM controller that converts 8V to 14V input voltage to 100V regulated output voltage. ... >>

New version of ASTRO 25 trunking system 27.03.2004

MOTOROLA announced the release of a new version of the ASTRO 25 trunking system, which complies with the APCO 25 standard and provides integrated voice and data transmission. This system, which has already begun shipping, allows public safety services to implement the exchange of both voice and digital messages within the same wireless infrastructure. The new ASTRO 25 trunking system provides increased protection of communication channels, thanks to a wide range of network security tools and the ability to program encryption keys over system radio channels. The ASTRO 25 system is part of a wide range of solutions offered by Motorola to law enforcement agencies. These are integrated means of communication, information processing systems, systems for managing the actions of employees at the scene of events and regional coordination systems. Thanks to the advanced capabilities of this system, law enforcement users will be able to ... >>

DC-DC Converter LT3466 26.03.2004

DC-DC converter type LT3466 from LINEAR TECHNOLOGY serves as a driver for 20 white LEDs. Supply voltage from 2,7 to 24 V, conversion efficiency 81%, switching frequencies from 200 kHz to 2 MHz. The microcircuit is located in a 3x3 mm package. ... >>

New 8-bit flash microcontrollers 26.03.2004

MICROCHIP TECHNOLOGY announced the launch of four new 8-bit flash microcontrollers with efficient power management features and optimized for battery-powered applications. The new family of PIC16F microcontrollers have enhanced clock failure protection to perform reliable shutdown of the control system, such as in automotive applications. Microchip sees a steady increase in demand for low cost microcontrollers with integrated features to reduce power consumption for longer battery life in many general purpose applications. The PIC16F737/747/767/777 microcontrollers have extended nanoWatt technology modes to provide complete power management. ... >>

MF-5060 LEDs 25.03.2004

MF-5060 LEDs from KINGBRIGHT have improved power characteristics. They are available in one, two and three colors. LED dimensions 5x6x2,4 mm, current consumption up to 50 mA. They have a wide viewing angle of 100° and a low thermal resistance of 75°/W. ... >>

ISL5627 High Speed ​​D/A Converter 25.03.2004

INTERSIL's ISL5627 high-speed D/A converter has two channels of 8 bits, a conversion rate of 260 megasamples per second, and a supply voltage of 3,3 V. Designed specifically for telecommunication applications. ... >>

New power low-voltage MOSFETs for automotive electronics 24.03.2004

INTERNATIONAL RECTIFIER Corporation has expanded its family of state-of-the-art low-voltage power MOSFETs for automotive electronics with a range of new products, including the IRF2804S transistor with a record low maximum on-resistance of 2 mΩ in the D2Pak surface mount package. IR's proprietary Trench MOSFET chip manufacturing process provides ultra-low channel resistivity. This is available with its lower temperature dependency along with the high avalanche energy required to ensure high instrument reliability in harsh automotive applications. In many cases, this makes it possible to abandon the use of a larger and more expensive D2Pak package in favor of a more compact D-Pak, reduce power dissipation, size and price of electronic components, and simplify their integration into automotive systems. ... >>

Intel Expands Support for Hyper-Threading Technology 24.03.2004

Intel is expanding Hyper-Threading Technology to a wider range of desktop PCs with the new Intel Pentium 4 processors with HT Technology, clocked at 2,4 to 3,4 GHz and supporting an enhanced 800 MHz system bus. Hyper-Threading Technology, developed by Intel Corporation, allows the processor to execute two instruction streams (two parts of the program) simultaneously, which improves the performance of individual applications and work in multitasking environments. ... >>

MB86064 - 14-bit D/A Converter 23.03.2004

The MB86064 IC from FUJITSU COMPONENTS is a 14-bit D/A converter with a conversion rate of up to 1 GS/s. It has an interface for communication with LVDS logic. ... >>

Oscilloscope ScopeMeter 190 23.03.2004

The FLUKE CORPORATION ScopeMeter 190 oscilloscope has a bandwidth of up to 200 MHz and a data recording rate of up to 2,5 GS/s. The instrument's memory can record up to 27500 signal readings. The device is hand-held, battery-powered. ... >>

New MOSFETs 22.03.2004

FAIRCHILD SEMICONDUCTOR has released FDD044AN03L / FDU044AN03L and FDD068AN03L / FDU068AN03L MOSFETs up to 30 V specifically for automotive applications. The first of these types have a forward resistance of only 3,9 mΩ. ... >>

New professional A3 scanners 22.03.2004

EPSON is shipping two new professional A3 scanners, the EPSON Expression 10000XL and EPSON GT-30000. EPSON Expression 10000XL is designed for high quality graphics scanning. The scanning resolution is 2400x4800 dpi and the optical density is 3.8D. With the optional slide module, the scanner can also be used for transparencies. The slide module comes with a set of frames that allow you to scan almost any standard film format - from 35mm film (48 frames) to 4x5" sheet film (8 frames). ... >>

New 3,5- and 4,5-bit analog-to-digital converters 21.03.2004

The new 3,5- and 4,5-bit analog-to-digital converters of the MAX1497 and MAX1499 types from DALLAS SEMICONDUCTOR-MAXIM have built-in LED drivers and operate on supply voltages from 2,7 to 5,5 V. They are configured for an input voltage range of + 2 to 200 mV. The results are displayed on the LED display or fed into the microprocessor. The MAX1497 is available in a TQFR-28 package and the MAX1499 is available in a TQFP-32 package. ... >>

875B Capacitance, Inductance, and Resistance Meter 21.03.2004

The B&K PRECISION Type 875B Capacitance, Inductance and Resistance Meter is suitable for use in production environments. The device has 10 resistance measurement ranges, and for measuring low resistances, the resistance of the measuring leads is automatically compensated. In addition to the specified parameters, it also measures the scattering coefficient. ... >>

CY25200ZZC - programmable clock generator chip 20.03.2004

CYPRESS has launched the CY25200ZZC Programmable Spread Spectrum Clock. The microcircuit has a variety of program features, multifunctional outputs and control inputs. Significantly reduced electromagnetic radiation. Available in TSSOP-16 package. ... >>

AT2AD8 High-Performance 84-Channel, 004-Bit ADC 20.03.2004

ATMEL Corporation has released a new high-performance 2-channel 8-bit ADC AT84AD004, which is a parallel processing ADC that provides performance up to 500Msps per channel and up to 1 Gsps per channel (interleaving mode - frequency division multiplexing). The ADC contains an input multiplexer, sample/hold units that provide dynamic performance with an input signal bandwidth of 1 GHz. The typical effective number of discharges is 7.3 at 500 Msps. The ADC contains a dual demultiplexer with 1:2 or 1:1 output selection, power consumption per channel is 700mW. The AT84AD004 is pin-to-pin and functionally compatible with the AT84AD001 and, like its predecessor, the AT84AD001, includes a 3-wire interface for offset and gain auto-calibration, a Built-in Self Test (BIST) unit, and sampling delay adjustment in frequency division multiplexing mode. ADC inputs can be configured as differential or single input, outputs are level ... >>

Vector modulators AD8340 and AD8341 19.03.2004

ANALOG DEVICES has announced the release of the AD8340 and AD8341 vector modulators. These are devices that, at radio frequency, allow simultaneous amplitude and phase modulation (provide phase control in the range from 0 to 360 °). 30 dB amplitude modulation. The operating frequency range for AD8340 is from 700 MHz to 1 GHz, for AD8341 from 1,5 GHz to 2,4 GHz. Chips are available in CSP-24 packages. ... >>

Photo sensor HSDL-9001 19.03.2004

The HSDL-9001 photo sensor from AGILENT TECHNOLOGIES is located in a square leadless package measuring 0,6x2,0x1,5 mm. It detects ambient light and converts it into an output voltage proportional to the light. Used to control the illumination of the display or keypad. The device operates with a supply voltage of 2,7 to 3,6 V in the temperature range from -25 to +85°C. ... >>

TV from SEIKO EPSON with a built-in photo printer 18.03.2004

Seiko Epson entered the TV market with the EPSON Livmgstation LS47P1 and EPSON Livmgstation LS57P1 widescreen models. The resolution of LCD TV panels is 1280x720 pixels with an aspect ratio of 16:9. The panel thickness is -14,9" for the 47" model and 16,3" for the 57" model. Built-in Photo On Demand technology allows you to view, print and save digital photos directly from your TV screen without a personal computer. TV panels have slots for SD/MultiMediaCard, Memory Stick, Compact Flash and SmartMedia memory cards. The built-in sublimation photo printer outputs images in 4x format. The built-in CD-R/RW drive is intended for saving photos. Photo On Demand technology allows you to get digital photos without leaving your apartment. The TV panels will go on sale in March 2004 for $3500 for the Livmgstation LS47P1 and $4000 for the Livmgstation LS57P1. ... >>

45-inch LCD TV from Sharp 18.03.2004

The Japanese company Sharp plans to launch LCD TVs with a huge diagonal of 45 inches on the market by this summer. According to the company's analysts, the demand for LCD TVs will grow from 3 million units in 2003 to 7,5 million this year. This is the niche that Sharp is going to fill with its huge TV, which should retail at around $9,000. Now, test production has already begun at the company's Japanese plant, which should smoothly turn into commercial production just in time for the summer. In total this year, Sharp intends to sell two million LCD TVs worldwide. ... >>

PHILIPS introduced a mirror-TV 17.03.2004

The Dutch company Philips has announced a curious novelty - "mirror TV", which is called - Mirror TV. This device is a built-in mirror. LCD panel that works as a TV. However, if you turn it off, the panel will look like a regular mirror. In addition to the functions of a TV, Mirror TV may well perform the functions of a monitor, for which the device has the appropriate connectors. Mirror TV was originally developed for use in hotels, but now Philips is positioning this device as a home interior item. Prices for Mirror TV are still unknown, as is the exact date of the start of deliveries. However, it is expected that the first batches containing LCD-matrices with a diagonal of 17, 23 and 30 inches will go on sale next year. ... >>

HD-DVD format approved 16.03.2004

Advocates of the new HD-DVD (High Definition and High Density-DVD) optical media format may be celebrating an intermediate victory. Although it is still very far from a complete and universal transition to disks of this standard, a serious step in this direction has been made. At the recent meeting of the DVD Forum participants in Tokyo, the HD-DVD standard (the capacity of such a disc is 20 GB) was officially approved. Recall that Toshiba and NEC, which are in a clear minority compared to another alliance promoting Blu-ray optical media, are at the origins of this format. This format allows you to write 25 GB of data to disk, but requires a serious retooling of production. By the way, the matter is not limited to these two standards. Sony, despite participating in the Blu-ray alliance, is developing its own standard for professional optical discs, which are still called Professional Disc. Their pre ... >>

Deprive Pirates MP3 16.03.2004

MP3 patent holders Thomson and Fraunhofer have begun developing a new technology that will make it impossible to piracy MP3 files. According to the developers, the currently existing coding standards (DRM) are incompatible, which in practice leads to a rigid binding of content to hardware and software, and prevents not only the full use of multimedia files, but also control over their sale. In this regard, a new DRM dongle will be created that supports the open architecture that the Open Mobile Alliance has been involved in developing. The key will be issued free of charge to each company that acquires the rights to use the MP3 codec. Commenting on the obvious question about the existence of alternative codecs, specialists from the companies developing the new system said that their licensing was out of the question until a reliable protection mechanism was created. ... >>

Micron phone camera sensor 15.03.2004

Micron has begun production of a 1,3 megapixel sensor matrix designed for use in smartphones, 3G phones and other mobile devices. The MT9M011 sensor array has significant improvements, including 0.15 micron process technology, low light capability and low power consumption. A number of analysts believe that expanding the capabilities and improving the quality of built-in digital cameras in mobile phones can greatly affect the digital camera market. ... >>

Satellite chip for mobile phones 15.03.2004

Samsung Electronics has completed development of the world's first digital multimedia broadcasting (DMB) chip for mobile phones. Samsung has applied SOC (system-on-a-chip) technology, which allows the developed satellite chip to separate signals for individual users from a huge number of Other signals. The signal transmitted from the satellite is then converted into a high quality video image. Samsung plans to release a mobile phone with such a chip at the same time as the launch of satellite digital media broadcasting service. ... >>

Portable voice recorder 14.03.2004

Marubeni Infotec plans to start selling the NMP-3TD portable multifunctional MP612/WMA player at the end of February. The player will be sold in a modification with 256 MB of internal memory. In addition to MP3 and WMA, support for the ASF/TVF format. NMP 612TD is equipped with a built-in radio tuner, microphone (voice recording capability) and FM transmitter (operating frequencies 87,6...95,1 MHz). Using the player, you can record FM radio, as well as through the line input - audio from an external source (in MP3 format, bit rate -32...224 Kbps). Song information (ID3 tags) in the player is displayed on a large LCD display with backlight. Dimensions - length 84x35,5x19 mm, weight - 47 grams. The portable player is connected to the computer via USB 1.1 interface. Power is supplied by three AAA batteries. Estimated cost of NMP-612T/256 is about 340 USD. 40 GB weighing 150 grams. ... >>

New suspended speaker system 13.03.2004

The American company TruAudio has released a new suspended speaker system Revolves, which is mounted on the ceiling or wall and rotates freely, which allows you to direct it to the sound perception area. Two midrange drivers and one tweeter are located on a rotating bar, and the tweeter can rotate independently. Both types of speakers are adjustable within +3 dB. The retail price of Revolves is 800 USD. ... >>

Disney Harakiri DVD 13.03.2004

Suicide DVDs will be in stores soon. They will cost little, but their lifespan is far from the 100 years stated for DVD. The package will say: "This DVD will self-destruct in 48 hours." Disney plans to release the first batch in August this year. The protective layer above the working surface of the disk will be made of a special purple material, which, after opening the package, begins to oxidize in air. After 48 hours, the process will go so far that this layer will change color to black and stop passing the laser beam. Disney's Buena Vista Home Entertainment is planning to make DVD rentals without the hassle of returning DVDs. ... >>

32/64-bit processor from Intel 12.03.2004

Intel plans to introduce its first 32/64-bit x86 processor at the traditional Intel Developers Forum in the spring, February 17-19. The new processor will be designed to compete with 32/64-bit chips from AMD, which, by the way, are the only 32/64-bit chips for desktop computers. It is known about the new processor that it is based on the Tejas core. Analysts believe that 32/64-bit x86 chips from Intel will appear no earlier than the first quarter of next year. ... >>

Canon i80 inkjet printer 12.03.2004

In Europe, the successor to the Canon i70, i80, was launched for sale, which can be used not only as a stationary small-sized office equipment, but also as a portable one, thanks to its reduced size compared to its predecessor, as well as the standard and optional features provided for this. Characteristics of the printer: optional - lithium-ion battery (LB-51) for autonomous power supply; direct network connection via PictBridge or Jet Direct; optional cigarette lighter charger (PU-100U); print resolution - up to 4800x1200 dpi; print speed: in color - up to 10 ppm, black and white - 14 ppm; interfaces: IrDA and USB 1.1 - standard, Bluetooth 1.1 - option (BU-10); tray for 30 pages; compatible with Mac (USB) and Windows 98/ME/2000/XP; dimensions - 310x174x51,8 mm; weight - 1,8 kg. The price is about 240 euros. ... >>

DVD+RW discs for video recording 11.03.2004

Fujifilm has introduced blank DVD+RW discs designed for video recording. The maximum write speed for VD+RW120F is 4x. On a disk with a capacity of 4,7 GB, you can "fill in" 120 minutes of video. The DVD+RW "blank" series consists of five models of different colors - orange, red, green, cyan and blue. The VD+RW120F will be on sale on March 1 in packs of 5 pieces, and a piece sale is also possible. The cost of a pack will be 2800 yen (25 USD), and one disc - 700 yen (6 USD). ... >>

Pretec breaks records 11.03.2004

At the upcoming CeBIT 2004 in Hannover, Pretec plans to present a range of new products, including the following. The 256MB 80X Cheetah CF Card is the world's fastest CF card with a read speed of 13MB/s and a write speed of 12MB/s. The write speed is equal to 80X. Pretec has set a new world record with the release of the new 8GB/16GB ATA Flash PC Type II Card (5,0mm). Cheetah 8GB/16GB ATA Flash PC Card Series is fully ATA/True IDE compliant and works on both 5V and 3,3V platforms. With 13MB/s read speed and 12MB/s write speed, Pretec Card Series Cheetah ATA flash PC Card is the fastest in the world. Pretec iDISK Tiny 2.0 is the world's smallest USB flash drive. It weighs about 5 g with a length of 50 mm. This little device has a capacity of 1 GB, with a 2 GB model expected in the second half of the year. USB 2.0 communication interface with speeds up to 480 Mbps. Memory cards 256 MB Cheetah ... >>

A new kind of computer sport 10.03.2004

Video games are often criticized for the inactivity of players sitting in front of the console for hours. But in Europe there is a growing community of players who actually shed sweat on a dance floor that is about a square meter in size. The music video game DDR (Dance Dance Revolution) first appeared in the late 90s and is quite popular in Japan, the United States and Asia. Now it is even considered as a new sport. The tournament, held last month in London with players from the UK, Norway and Italy, was the first official event held in Europe under community DDR rules. In the competition, the dancers or players step on the colored arrows according to the instructions on the display in front of them. The level of the participant is determined by the accuracy of execution and is evaluated in points. ... >>

High end mobile phone V80 from Motorola 09.03.2004

In the second quarter of 2004, Motorola will introduce a new high-end mobile phone, the V80. It will have a rather unusual design: a large color external monitor can rotate 180 degrees to reveal the keyboard. The 90-degree rotation position is designed to work comfortably with the built-in VGA 640x480 camera in landscape mode. Supports MP3 (including ring tones) and JAVA, Bluetooth. The V220, equipped with a digital camera, a color screen, and MP3 support, should be released in the summer. A distinctive feature of the phone will be the ability to personalize by downloading your preferred themes, including screen fonts, sounds and icons. Another function called "MOTOmixer" is for MIDI file operations. In addition to these Bluetooth-enabled phones, Motorola will offer a 820x64x55mm hands-free headset, the HS19. Battery life - 300 minutes of talk time and 100 hours of standby time. ... >>

New acoustics from DENON 09.03.2004

DENON has released three acoustic models, which together represent a complete set for home theater. SC-T5L and SC-C5L are front and center speakers. Both systems are three-way, using two midrange drivers with a diameter of 80 mm and one tweeter. Reproducible frequency range - 45 Hz ... 95 kHz (SC-T5L) and 55 Hz ... 90 kHz (SC-C5L), impedance - 6 ohms. Front speaker dimensions - 280x270x1060 mm, weight - 5,2 kg; central - 450x179x85 mm, weight - 2,2 kg. DSW-5L is a bass-reflex subwoofer with 140W output power. This power is provided by a woofer with a diameter of 130 mm. Frequency response "subwoofer" - 50 Hz ... 200 Hz. Dimensions DSW-5L -220x380x510 mm, weight - 11,4 kg. ... >>

frozen light 08.03.2004

In 2001, two teams of scientists reported that they had succeeded in stopping the light. One under the direction of Mikhail Lukin, and the other - under the direction of Lene Howe. Both groups slowed down the speed of light by passing it through gas atoms. Lukin used hot atoms of rubidium, Howe used supercooled sodium. Both groups reduced the speed of light to zero, but in doing so, all photons were absorbed. The momentum could be regenerated because the energy of the photons was stored in the atoms. But when the pulse stopped, technically, it contained no light at all. Lukin and his colleagues Mikhail Baisky and Alexander Zibrov have now managed to stop light for a fraction of a millisecond with all their photons using a new method. But they believe that the light can be stopped for a longer time. This could be useful for use in telecommunications systems that send optical signals, or, even more fantastically, in quantum computers. ... >>

Infineon launches 512Mb NAND storage 08.03.2004

Infineon Technologies, together with the Israeli company Saifun Semiconductors, has begun production of flash chips with a capacity of 512 Mbit, NAND compatible type. The chip is built on the basis of non-volatile NROM memory, based on TwinFlash technology, which allows you to write two bits of information into one cell at once. Thanks to this, the chip size is reduced by 40% compared to technologies in which one cell stores one bit, and the cost of products is reduced accordingly. The company has already received several orders for the new memory, but neither the names of the customers nor the details of the planned production volumes have been disclosed yet. However, representatives of the company noted that they could increase these volumes if necessary, as they expect good demand for their products. Gartner predicts the NAND flash market will grow from $3,4 billion in 2003 to $4,4 billion in 2004, with unit prices expected to fall from $11,15 to $8,50. USD. Infi ... >>

Mobile phone with two cameras 07.03.2004

Often, tourists give someone their camera, show them which button to press, and ask them to take a picture of themselves against the backdrop of some monument. Japanese electronics firm NEC has patented a phone that can take photos of yourself in front of a landmark. A mobile phone with a digital camera is no longer a novelty, but NEC experts suggest that two cameras with lenses directed in different directions be built into the phone. Holding the camera at arm's length, you aim one lens at yourself and the other at the landmark you are standing in front of. Two shots are taken at the same time, and the electronics of the device combine them, so that your portrait appears on the desired background. ... >>

The first warship made of plastic 07.03.2004

The hull and superstructures of the Swedish corvette "Visby" are made entirely of polyvinyl chloride reinforced with fiberglass. PVC is known to everyone as a material from which plastic raincoats, bags, bags, flooring and other useful trifles are made. The ship, 72 meters long and 10,4 meters wide, is made of plastic for the first time. The new material, with a strength comparable to steel, is much lighter, and in addition, it does not rust or reflect on the radar screen. ... >>

Worm blood transfusion to human 06.03.2004

With large blood losses, especially when there is not enough donor blood, the infusion of blood-substituting solutions containing salts, amino acids and carbohydrates, but not capable of carrying oxygen to the tissues, is practiced. French biochemists offer a new blood-substituting solution based on the hemoglobin of the sandworm. A worm living in the soil on the seashore needs a very active hemoglobin in order to extract oxygen where there is almost none - in sand and silt. Therefore, the hemoglobin molecule sanded 50 times larger than the corresponding molecule from human blood. The hemoglobin of the worm does not cause an allergic reaction in humans and is able to supply oxygen to its organs. This substance can be obtained in large quantities by genetic engineering methods, by transplanting the corresponding gene, for example, into bacteria or plants. The first experiments were carried out on mice, in a year clinical trials should begin. ... >>

Model aircraft flying at the tip of the beam 05.03.2004

A group of employees from NASA and the University of Alabama (USA) has created an aircraft model powered by laser beam energy in flight. The aircraft, weighing about 300 grams, was powered by an ultraviolet laser beam aimed at photovoltaic arrays suspended from the model. Batteries turned light into electric current, which turned the model aircraft propeller. The test flight took place in a large hall. Experimenters hope that similar but larger aircraft will be able to stay in the air for hours, collecting weather data or intelligence information. ... >>

Cotton as a semiconductor 05.03.2004

Uzbek physicists have discovered that cotton fiber has the properties of a semiconductor: it greatly changes its electrical conductivity under the influence of external factors. In principle, this makes it possible to create electronic elements based on cotton. Cleaned and combed cotton fibers in bunches of about 7000 pieces were impregnated with a 10% iodine solution, and then dried at 50 degrees Celsius. It turned out that such a beam, if an electrical voltage is applied to its ends and illuminated with ultraviolet light, changes the electrical conductivity by 12-50 times. Silicon doped with some impurities behaves in approximately the same way. When illuminated with ordinary white light, the behavior of the fiber is more complicated: the electrical conductivity first falls, after a while it becomes higher than the original, and in the dark after a few hours it is restored to normal. The discovered effect makes it possible to make light-sensitive elements from cotton. ... >>

Thread - 8500 years 04.03.2004

In an 8500-year-old burial excavated in Pakistan, a bracelet of eight copper beads strung on the remains of a thread was found. An analysis carried out by French scientists showed that the thread is cotton. From destruction by bacteria, it was saved by poisonous copper compounds secreted by beads. Until now, the oldest samples of cotton products were considered to be scraps of fabrics about 3500 years old. Cotton, from which the thread for the bracelet is made, most likely was wild. ... >>

Self-tightening knot 04.03.2004

German surgeons have recently used shape memory sutures. A thread made of special plastic is tied in a knot in advance, heated to 40 degrees Celsius. Then it is cooled to room temperature and straightened. When the surgeon makes a suture, the thread heats up to body temperature, and after 20 seconds a knot appears at its end by itself. The seam is fixed. ... >>

Fresh water from the seabed 03.03.2004

In the Mediterranean Sea near the French city of Menton, 800 meters from the coast, at a depth of 36 meters, a source of fresh water was found gushing from the seabed. The existence of such underwater keys was reported by ancient authors. Now there are more than a thousand such sources all over the world. But the source near Menton is interesting in that it was first exploited to supply the city with drinking water. For fear of disturbing the source, they did not drill it and turn it into a well, they simply put an anchored metal cap with a diameter of two meters and a height of ten, connected with a flexible hose to the surface, above it. Fresh water, as lighter, rises into the cap. The water pressure at depth is so great that pumps are not needed. Above the surface of the sea, it beats like a fountain, one hundred liters per second. But under the cap, sea water seeps in a small amount, so a weakly mineralized drink is obtained (less than a gram of sea salts per liter). This water is suitable for irrigation of plants, n ... >>

The cave got sick 02.03.2004

The famous Lascaux cave in the south of France with numerous images of animals made in the late Paleolithic, about 15 thousand years ago, was discovered in 1940, and since then it has been visited by tourists for a long time, sometimes up to a thousand people a day. But the breath of tourists increased the humidity of the air, they carried dust and microorganisms on their clothes and shoes, which did not contribute to the preservation of rock art. Therefore, in 1963 the cave was closed for tours. But it turned out that the cave can "sick" even without tourists. In 2002, the Fusarium fungus grew on the floor of the cave. I had to spray the stones with a fungicide - a remedy for parasitic fungi. The reproduction of fungi is greatly slowed down. But then a bacterium appeared, willingly feeding on the fungicide. Spraying was repeated by adding an antibiotic to the liquid. It seemed the problem was solved. However, this year, the staff of the Historical Monuments Research Laboratory discovered another combination of fungi and bacteria on the roof of the cave, against which spraying does not work. ... >>

Thyroid in jelly 02.03.2004

Kidney or heart transplants have become almost routine, but thyroid transplants have not yet been successful. It is very aggressively rejected by the immune system. Specialists from the German company Cellmed have learned how to make microcapsules from alginate and place cells of the thyroid or parathyroid gland inside. Alginate, a jelly-like substance produced by brown algae, is used in cosmetics and the food industry, for example, as part of ice cream. A suspension of microcapsules with cells is injected with a syringe into the diseased thyroid gland of the patient. The alginate shell does not allow antibodies or macrophage cells of the immune system to reach the gland cells. But oxygen and nutrients from the blood, as well as hormones produced by transplanted cells, pass through the network of long alginate molecules unhindered. ... >>

Motorcycle helmet with mirrors 01.03.2004

The English company "Rivu" began to produce a motorcycle helmet with a built-in system of lenses and mirrors, which allows you to see what is behind the motorcyclist. All optics are made of lightweight and unbreakable plastic. The lens on the back of the head sends the image to the mirror hidden under the visor. To see what is happening behind, it is enough to look up. The new helmet is not heavier than the usual one. ... >>

Recharging through the asphalt 01.03.2004

The authorities of Genoa (Italy), fighting exhaust air pollution, decided to put a battery electric bus on one of the routes in the center. The choice fell on the new buses of the Italian company Eco Power Technology, which are recharged at the final stops without being connected to wires. Three electric buses run along the 2400-meter route. At the final stop, where the bus arrives approximately every 20 minutes, an induction coil with a diameter of one meter is embedded in the asphalt, in which an alternating current with a frequency of 20 kilohertz circulates. The same coil is lowered from under the bottom of the car, and the distance between them can be up to 40 centimeters. An in-cab monitor shows the driver how exactly the two coils match up. Charging takes 10 minutes. Rain and snow do not interfere with the transmission of energy. Previously, the same system was adopted in one of the cities of New Zealand, and after Genoa, perhaps Turin will acquire it. ... >>

ZL38001 - suppressor of acoustic interference and interference in the communication line 29.02.2004

The new ZL38001 chip from ZARLINK SEMICONDUCTOR is a suppressor of acoustic noise and noise in the communication line. The duration of the suppressed echo or reverb is 112 ms. Supply voltage from 2,7 to 3,6 V. Inputs accept voltages up to 5 V. ... >>

New Schottky diodes from VISHAY 28.02.2004

VISHAY INTERTECHNOLOGY has released new Schottky diodes of types BAS40-02V, BAS70-02V and BAS581-02V in subminiature packages with dimensions of 1,2x0,8 mm. Diodes are designed for use in mobile phones, camcorders and other miniature devices. ... >>

0,85" HDD driver up to 4 GB 27.02.2004

TOSHIBA ELECTRONIC COMPONENTS has released a 0,85 inch HDD driver with a capacity of up to 4 GB. The tiny device weighs only 10 g, operates at a speed of 3600 rpm and withstands shock up to 1000 g. ... >>

TDS5000B Digital Storage Oscilloscope 26.02.2004

TEKTRONIX Corporation has released the TDS5000B digital storage oscilloscope. The device has a developed menu, a user-friendly interface and is controlled using a computer "mouse". ... >>

New series of operational amplifiers TSH80-81-82 25.02.2004

ST MICROELECTRONICS has released a new series of operational amplifiers TSH80-81-82 with an operating frequency range of up to 100 MHz, a voltage transfer rate of 100 V / μs and a rail-to-rail output voltage. The microcircuit includes one op-amp (TSH-80, 81) and two op-amps (TSH82). ... >>

Video camera SONY DCR-HC85 24.02.2004

The new SONY DCR-HC85 camcorder allows you to get up to 2 megapixels of video information, which means an unprecedented resolution of 1600x1200 pixels. The camera has a number of options (optical zoom x10, digital zoom x120, etc.). ... >>

New chipset for high-definition color television 23.02.2004

SAMSUNG ELECTRONICS announced the release of a chipset for high-definition color television. It includes an MPEG-2 decoder type S5H2010 and a digital TV CPU S3C2800. The chipset includes: 32-bit microprocessor, 2D graphics engine, display processor, NTSC-PAL decoder and more. ... >>

TDA8939TH - class D digital amplifier 22.02.2004

PHILIPS SEMICONDUCTOR Corporation has launched the TDA8939TH class D digital amplifier. It uses the representation of sound through pulse-width modulation. The microcircuit can develop power up to 140 watts in a load. Scope of application - home theater, DVD receivers, etc. ... >>

100 volt voltage regulator LM5008 21.02.2004

NATIONAL SEMICONDUCTOR releases the first 100V LM5008 voltage regulator. With an input voltage of 9,5 to 100 V, the microcircuit has a standard output voltage of 12 V at a current of up to 500 mA. The regulator is ideal for 48V power converters, automotive and other applications. Available in 8x4 mm MSOP-4 package. ... >>

Mobile phone MOTOROLA V600 20.02.2004

The MOTOROLA V600 mobile phone has a built-in camera, which allows you to take an excellent photo and create a multimedia message in a matter of seconds. Ringtones in MP3 format, viewing video clips and other features are built into the device. ... >>

MPLAB PM3 universal programmer 19.02.2004

MICROCHIP Corporation announced the creation of the MPLAB PM3 universal programmer, which can handle all microcontrollers of the PIC series released by the corporation and digital signal processors of the dsPIC series. The device can be connected to a personal computer via a serial or parallel interface and allows programming directly from a computer. For example, programming a PIC18F8720 microcontroller with 128KB flash memory takes 20 seconds. ... >>

APED3820PBC Blue LED 18.02.2004

KINGBRIGHT's APED3820PBC blue surface mount LED is launched with a wide arc (60°x35°) and dimensions of 3,8x2,0x3,2mm. With an operating current of 20 mA, the brightness of the LED is 150 mcd. ... >>

10-channel voltage reference generator EL5225 17.02.2004

INTERSIL has released a 10-channel EL5225 voltage reference for use in TV and LCD displays. Each output is programmed with a 10-bit numeric code over the SPI serial interface. The microcircuit is produced in the TSSOP-24 package. Operating temperature range from -40 to +85°С. ... >>

Intel XScale processors 16.02.2004

Intel Corporation announced the release of a new family of processors based on Intel XScale technology, which can work in a variety of telecommunications applications, as well as in mini PCs and DVD players. The PXA27x family of processors operates at clock speeds from 312 to 624 MHz and has 64 megabytes of built-in flash memory. ... >>

Powerful keys FSDM0365RN 15.02.2004

FAIRCHILD SEMICONDUCTOR company released powerful keys for DVD-players, LCD monitors with high resolution: FSDM0365RN - for 30 W power; FSDM07652R for 60W and FSDM0365RN for 75W. Own consumption of keys is less than 1 W. All three ICs have over-voltage, over-current, over-temperature protection and soft start protection. ... >>

World's smallest TV tuner 14.02.2004

NOVAC Corporation has announced the release date of the world's smallest external TV tuner Micro CATCH TV Walker. On January 150, it will hit stores for $2.0. The portable tuner is designed to be used in conjunction with a laptop. USB 50 is selected as the PC communication interface. Dimensions of the device - 106x33x88 mm, weight - 08007 g. Micro CATCH TV Walker uses chips from WIS Technologies (G07007SBG7135SB) and Philips (SAA8275), as well as TDA8290 and TDA2 chips. The TV tuner supports PAL, SECAM and NTSC sound standards, as well as NICAM, A720 and MTS. Video capture is carried out with the following maximum resolutions: 480x720 pixels (NTSC) and 576xXNUMX pixels (PAL/SECAM). ... >>

NOKIA has created a phone for athletes 13.02.2004

Nokia introduced a mobile phone for travelers and athletes. In a statement, the company said that the new Nokia 5140 GSM phone will have a built-in digital compass, flashlight, camera and apps designed specifically for athletes and travelers. The body of the phone is shock, splash and dust resistant. The company has also introduced an add-on device to this phone that will add GPS functionality. ... >>

DVD/VHS from LG ELECTRONICS 12.02.2004

Following Samsung, which has been producing hybrid home video recorders that support VHS and DVD formats for a couple of years, LG Electronics also entered the market with a similar product. The new device is distinguished by the ability to record DVD discs, while the Samsung models currently being sold in Russia only allow playback of pre-recorded DVDs. The ability to not only rewrite a disc to a cassette, but also perform the reverse operation greatly expands the functionality of the device. If we also add here a set of connectors for connecting digital cameras, a graphical interface and other nice little things, then the new product from LG looks quite attractive. ... >>

SHARP Updates AQUOS LCD TV Lineup with 6 Models 12.02.2004

Sharp has announced six new Aquos series LCD TVs assembled on LCD panels from its sixth generation line in Kameyama. Delivery times for new products vary depending on the model. The first TVs will go on sale on February 11, the last - in March. The presented TV models have an LCD panel with 3,15 million dots (1366x768), aluminum speakers. Among the interfaces mentioned are a PC-Card slot, a DVI-I port, two D-ports, two i.Link ports. The line is represented by 37, 32 and 26-inch models, each of which has two varieties - with speakers located under the TV, and with speakers placed on the sides. In May of this year, Sharp is preparing to introduce a 45-inch TV model in the lineup. The 37-inch model with speakers under the TV is about $6,630, the 32-inch model is just over $5,000, and the 26-inch model is about $3,980. Be that as it may, the price of the 37-inch model is still too high for ... >>

JVC TH-A25 - budget home theater in a box 11.02.2004

The range of box cinemas of this brand is by no means small, but the company continues to expand it. The latest TH-A25 is a typical "state employee", designed to work in small spaces. This is evidenced by the output power data: 30 watts (rms) per channel for each of the five satellites and 55 watts (also rms) for the subwoofer. The theater differs from its predecessors mainly in its design, which embodies the latest fashion trends. As numerous marketing studies show, the appearance of equipment plays an important role in the choice. Therefore, the expansion of the model range due to devices similar in technical characteristics, but differing in appearance, is quite justified. ... >>

New camera series from CANON 10.02.2004

A new series of MV700 camcorders with 800,000-pixel CMOS sensor has been released by Canon. Despite the almost twenty percent reduction in physical volume, the new camcorders have retained a general external resemblance to the previous line - MV600. The series includes four models: MV750i with 22x optical zoom, MV730i with 20x and two models with 18x optical zoom - MV700i and MV700. The MV750i and MV730i models have a so-called. "progressive shooting system" - the ability to take still pictures during video shooting and save them in JPEG format to an MMC or SD memory card. The MV750i features a Super Night mode with LED for shooting in total darkness, and a Night+ mode that allows you to turn the LED on and off as you shoot. All models have a sound filter that removes the noise of the mechanical part of the camera. The new AIF4 DSP chip has replaced the analog AIF3 chip of the MV600 series camcorders. Automatic recording level adjustment (ALC/Auto ... >>

MICROSOFT SPOT watches will be available soon 08.02.2004

For the first time, Microsoft announced a watch, on the dials of which their owners can see news, stock quotes, weather reports and other useful information, almost a year ago at the Consumer Electronics Show (CES) in Las Vegas, which traditionally takes place in early January. . All this mass of "foreign" information must be loaded into the watch via the FM wireless network. This technology is called SPOT (Smart Personal Objects Technology). It also involves tracking the movement of the watch owner to other time zones and synchronizing the clock with the most accurate atomic clock. Bill Gates personally spoke about this smart watch, and he also demonstrated their sample on his own hand. Gates then announced that SPOT watches would appear in stores in the fall of 2003. However, this did not happen. There were problems with radio communication, and some corrections had to be made to the radio chips. But now, it seems, everything is ready, and it is known ... >>

Cleansing the blood instead of a heart transplant 08.02.2004

Progressive heart failure is usually a weakening of the heart muscle. To maintain the same volume of pumped blood, the heart enlarges painfully. In the last stages, often the only way to heal may be a heart transplant. The causes of the disease are largely unclear. Gerd Vallukat from the Max Delbrück Center for Molecular Medicine (Berlin) believes that the deficiency may be due to the fact that antibodies to the muscle cells of the heart appear in the blood. He found such antibodies in 80 percent of the patients he studied. They attack the so-called beta-adrenergic receptors located on the surface of the muscle cells of the heart and regulate the strength and frequency of its contractions. Why some people develop these antibodies is unknown. At the Berlin Heart Center, Vallukat's discovery is already being used in practice. Here, a method has been developed to purify the blood from dangerous antibodies. Already in a pilot experiment in eight patients, the annual heart rate ... >>

Truck wash basin 07.02.2004

The English company "TEAL" began to produce a washstand built into the truck door and allowing the driver to wash his hands with warm water on the way. One filling of the tank is enough for 8-10 washings. The built-in computer maintains the water temperature within 43-46 degrees Celsius and provides economical water supply to the miniature shower head. Water heating comes from a running engine or, if the engine is turned off, from the power supply system. Dirty water is collected in a container, from which it can then be poured into the sewer. ... >>

Chernobyl immunity 06.02.2004

About 6500 people who participated in the liquidation of the consequences of the Chernobyl disaster now live in Latvia. A group of Latvian doctors and biologists studied the state of the immune system in 1789 of them for seven years. In the first years of the study, about a third of those who worked in Chernobyl experienced a decrease in the number of leukocytes in the blood, and the degree of this decrease depended on the dose of radiation received. In subsequent years, on the contrary, leukocytes became more than normal. Serious disturbances were also found in the ability of leukocytes to produce interferons - a means of self-defense of the body against viruses. In 90 percent of the examined, the concentration of immunoglobulins in the blood also changed: some of their types became more, others - less than the norm. In all seven years of research, the return of the immune system to normal did not occur. ... >>

Geranium Gold 05.02.2004

Indian scientists from the National Chemical Laboratory found that the aromatic substances contained in the leaves of the common geranium, as well as the enzymes of a microscopic fungus living on these leaves as a symbiont, are able to restore gold from solutions of its salts. Moreover, the precious metal precipitates in the form of supermicroscopic balls, sticks and pyramids with a size of hundredths of a micron. These gold particles can serve as details in microelectronic circuits and in nanotechnology in the near future. True, for this you will have to find a way to unify the shape of gold crystals or methods for selecting those that are suitable in shape and size. Currently, gold is precipitated from solutions of its salts using chemical methods that are expensive and dangerous to the environment. ... >>

Coffee Mysteries 05.02.2004

The caffeine found in coffee, tea, kola nut, and chocolate is generally thought to raise blood pressure. Hypertensive patients are allowed only decaffeinated coffee. However, a study conducted at the University of Zurich (Switzerland) showed that in reality everything is much more complicated. Fifteen healthy volunteers drank three cups of coffee each, receiving 250 milligrams of caffeine. For those who rarely drink coffee, systolic pressure increased by an average of 12,6 millimeters of mercury after an hour. And those who regularly consume this drink, the pressure remained unchanged. But what is most interesting: the participants of the experiment, who were unaccustomed to coffee, who received three cups of decaffeinated coffee, also increased their blood pressure - by 12 millimeters. Moreover, when caffeine-accustomed subjects were injected with the substance directly into their bloodstream, their blood pressure rose as well. The only conclusion reached by the experimenters is that coffee contains many other substances that strongly influence the effect of caffeine. ... >>

transparent concrete 04.02.2004

A young Hungarian architect, Aron Lošonczi, proposed to lay light-conducting optical glass fibers oriented in one direction in concrete. Translucent blocks are obtained. On a wall built from such blocks, clear outlines of the shadows of objects behind it are visible, even if the wall is several meters thick. The invention can completely transform the look of cities. Losonci intends to build a small experimental structure of translucent concrete in his hometown of Chongrad - a gazebo or a chapel. The light guides will be provided by the German glass-making company Schott, which is interested in the idea. ... >>

When brushing your teeth, it is important not to overdo it 03.02.2004

Brushing your teeth too long and too hard can be more harmful than helpful. This was discovered by English dentists led by Peter Hisman. They gave twelve volunteers each an electric toothbrush connected to a computer. The brush recorded the duration of brushing and the force of pressure on the teeth. 16 different combinations of time and force were used: brushing 30, 60, 120 and 180 seconds at 75, 150, 225 or 300 grams of pressure. It turned out that it is best to brush your teeth for two minutes with a pressure on the brush of 150 grams. With longer brushing, the teeth do not become cleaner (all impurities have already been removed), and with stronger pressure, the risk of damaging the gums and even tooth enamel increases. ... >>

How to catch a graffiti artist 03.02.2004

Traptec, an American acoustic tracking and security firm, has developed a system for identifying and locating graffiti "artists". The aerosol can, releasing a jet of paint, emits a hiss in the ultrasonic range. Sensors of the Taggertrap system, placed on lampposts and connected to a network, pick up this sound even against the background of intense city noise and allow you to track the location of the graffiti artist. There is also a portable version in a case, connected to other similar devices via a mobile telephony network. A police squad arrives at the location. By the way, the annual costs of washing dirty walls, fences, shop windows, subway cars, etc. are estimated in the US at 8-10 billion dollars. ... >>

puddle drink 02.02.2004

If Ivanushka from a well-known fairy tale had a "Hydropak" package released in the USA in his pocket, he could fearlessly get a tasty and healthy drink from any puddle. Powder - a mixture of mineral salts, vitamins and glucose - is placed in a bag of a special polymer film based on cellulose with pores of 3-5 angstroms in diameter. Having immersed the bag in a reservoir of any degree of contamination with silt, bacteria and viruses, you have to wait a while - and through the pores, water will be drawn into the bag due to osmosis, dissolving its powder contents. Since the smallest bacterium is about 2000 angstroms across (an angstrom is one ten-millionth of a millimeter), and the virus is 50 angstroms, no infection will penetrate the film. According to the firm, up to 95 percent of pesticide molecules, other organic poisons and heavy metal compounds are also retained. After that, a straw is inserted into the neck of the bag, and you can drink a drink that restores strength. The bag holds up to two liters of water. ... >>

House-thermostat 02.02.2004

In the German city of Ludwigshafen, a house was built, the walls of which maintain a constant temperature in the rooms. 10-25 percent of plastic microcapsules filled with low-melting solid hydrocarbon - paraffin - were introduced into the wall plaster. When the temperature rises above 24 degrees Celsius, the paraffin starts to melt and consumes some of the heat. On cooling, it, on the contrary, releases the latent heat of fusion. A two-centimeter layer of paraffin plaster has the same heat-insulating properties as a twenty-centimeter brick wall. ... >>

oblate star 01.02.2004

Stars, according to all textbooks of astronomy, are giant balls of hot plasma. However, French astrophysicists from the University of Nice, using an optical interferometer consisting of several telescopes, found that one of the stars in the southern hemisphere of the sky is not at all spherical in shape. By measuring the diameter of the star Alpha Eridani (another name given by Arab astronomers is Achernar) in different directions, the astrophysicists obtained the figure shown here. Two variants of the star's shape are calculated, as astronomers are not entirely sure where its axis lies. A star located in the constellation Eridanus is, if a ball, then strongly flattened and beveled: either a melon or a pumpkin. The reasons for this strange shape are unclear: either Achernar rotates faster than astronomers calculated from the spectrum of the star, or some very unusual processes are going on inside it. This option is not excluded: Alpha Eridanus has an invisible satellite that distorts its shape with its attraction. Ze ... >>

The doctor must be in good physical shape 01.02.2004

Researchers from Mercer University in Georgia (USA) interviewed 226 patients treated by five different doctors. Two of the therapists weighed 102 and 125 kilograms, the weight of the rest was within the normal range. The results of the survey showed that patients treated by doctors with a normal weight followed the recommendations more accurately than those treated by "heavyweights". But interestingly, when it came to advice on maintaining a normal weight and good physical shape, patients listened to these tips equally carefully, regardless of the physique of the doctor. ... >>

Tantalum Capacitors 592D 31.01.2004

VISHAY INTERTECHNOLOGY has added two devices to the 592D Tantalum Capacitor family. A capacitor with dimensions of 14,5x7,37x2 mm has a capacity of 2200 microfarads, a capacitor with dimensions of 14,5x7,37x2,5 mm has a capacity of 3300 microfarads. Operating voltage 6,3 V. ... >>

Multi-standard DVD-RAM/-RW/-R recorder 31.01.2004

TOSHIBA ELECTRONIC COMPONENTS has released the world's first multistandard DVD-RAM/-RW/-R recorder. In addition to supporting the DVD-RAM standard, it is possible to play and record DVD-RW discs. The cost of the device is $600. ... >>

Analog-to-digital converter ADS5500 30.01.2004

The new ADS5500 analog-to-digital converter from TEXAS INSTRUMENTS has unique features: 14-bit resolution, 125 MS/s conversion rate, 750 mW power consumption. ... >>

New real-time spectrum analyzers 30.01.2004

EKTRONIX's new RSA2200A and RSA3300A real-time spectrum analyzers are designed to analyze RF signals in a wide range of applications from RFID to sophisticated radar. The device provides for the possibility of saving and accumulating information for subsequent analysis. ... >>

New multi-standard TV audio processors and audio demodulators 30.01.2004

ST MICROELECTRONICS has released a new family of multi-standard TV audio processors and audio demodulators SW82x7. They support audio standards such as Dolby, ProLogic, SRS TruSurround XTTM, and many more. This allows the use of chips for analog and digital television, digital video recorders, DVD equipment, etc. ... >>

New series of SONY LCD monitors 29.01.2004

SONY Corporation has released a new series of LCD monitors with a diagonal of 17 and 19 inches, designed for SXGA format. The monitors automatically adjust their brightness depending on the ambient light. Monitor brightness 450 cd/m2, contrast ratio 800:1 (for 19-inch monitors). ... >>

New device for high-definition television 29.01.2004

SAMSUNG ELECTRONICS announced the release of a device for high-definition television, consisting of two chips: S5H2010 - MPEG-2 decoder and S3C2800 - central processing unit for digital television. In addition, the chips include an NTSC/PAL decoder, a 2D graphics processor, a chip card interface, etc. ... >>

Chip FM31x from RAMTRON 28.01.2004

The world famous manufacturer of ferroelectric memory chips RAMTRON has released the FM31x chip. In addition to 256 Kbit memory, it includes a processor, a supervisor and a watchdog timer, which can dramatically increase the reliability of the device. ... >>

Hard disk DVD+R/+RW recorder 28.01.2004

PHILIPS SEMICONDUCTOR introduces the world's first DVD+R/+RW hard disk recorder combination. This allows you to save and accumulate video and audio recordings and games, as well as data from personal computers in the device. ... >>

New bipolar transistors MJL4281A (npn) and MJL4302 28.01.2004

ON SEMICONDUCTOR has released new MJL4281A (npn) and MJL4302 (pnp) bipolar transistors with high collector-emitter operating voltage (up to 350 V). The maximum allowable collector current is up to 15 A, the gain is from 80 to 240. A distinctive feature of transistors is their exceptionally high linearity in the current range from 100 mA to 5 A, which allows them to be used in high-quality audio frequency amplifiers. Produced in cases TO-264. ... >>

New chips of the Bluetooth family 27.01.2004

NATIONAL SEMICONDUCTOR announced the release of new Bluetooth chips that are compatible with the recently released Bluetooth version 1.2. The LMX5252 chip is a Bluetooth radio transmitter, the LMX5452 chip, in addition to the receiver itself, includes a Bluetooth 1.2 version processor. The first of them is produced in the LLP-36 package, the second - in the BGA-64 package. Chips are designed for mobile phones and personal digital assistants. ... >>

MC33794 - Electric field sensor 27.01.2004

MOTOROLA Corporation has released a microcircuit - an electric field sensor MC33794. In addition to the sensor itself, the microcircuit includes a sinusoidal signal generator of a high degree of spectral purity, which is tuned using an external resistor. ... >>

Programmable Signal Generator LTC6903/6904 27.01.2004

The LTC6903/6904 programmable signal generator from INEAR TECHNOLOGY operates in the frequency range from 1 kHz to 68 MHz and outputs a square wave signal. Frequency setting accuracy 0,1%. Supply voltage from 3 to 5,5 V. Control is provided via the SPI (LTC6903) or I2C (LTC6904) interface. The chip is available in an 8-pin MS8 package. ... >>

Blue LEDs APED3820PBC 26.01.2004

KINGBRIGHT's new APED3820PBC blue LEDs come in a 3,8x2,0x3,2mm surface mount package. With an operating current of 20 mA, the brightness is 150 mcd. Forward voltage drop 4 V, reverse current 10 µA. Beam angle 60x35°. ... >>

Dual operational amplifier EL1510 26.01.2004

INTERSIL has released a dual operational amplifier EL1510 specifically for use in modems of digital communication lines of ADSL, SDSL, HDSL formats, etc. The microcircuit is powered by +12 V and can develop a current of up to 250 mA at the output contacts. The amplifier bandwidth is 70 MHz at -3 dB. The microcircuit is available in 8-pin LPP and SOIC packages. ... >>

High speed motor driver IRMCK201/203 25.01.2004

INTERNATIONAL RECTIFIER's IRMCK201/203 high speed motor driver is designed to drive high speed motors (up to 100000 rpm) and over a wide speed range (up to 20:1). Driver supply voltage 3,3 V, clock frequency 33 MHz. The driver has simplified software and can replace complex digital signal processors. ... >>

Intel Centrino Technology 25.01.2004

Intel Centrino Technology for Mobile Personal Computers is Intel's first technology designed specifically for the mobile world. This latest technology combines built-in wireless networking with superior mobile PC performance. It also provides extended battery life and allows you to create compact laptops that are easy to carry around. ... >>

Optoelectronic relay FTR-SL series 24.01.2004

The new FUJITSU COMPONENTS FTR-SL series optoelectronic relay has an exceptionally small size of 28x15x5 mm and is designed for output current up to 1A. Rated voltage range: 5, 12, 24 and 60 V. The relay has a built-in varistor for overvoltage or overcurrent protection. The isolation between input and output is rated at 2500 V. ... >>

Triple video driver IC FMS6418A 24.01.2004

FAIRCHILD SEMICONDUCTOR introduced the FMS6418A Triple Video Driver IC capable of handling both conventional TV and HDTV. The microcircuit has built-in filters of the 6th order with frequencies of 8 MHz for conventional television and 30 MHz for high-definition television. The microcircuit is produced in the SOIC-16 package. ... >>

EPSON Stylus Photo RX500 MFP 23.01.2004

The EPSON Stylus Photo RX500 is the first and currently the only multifunctional device on the market capable of photo-quality 6-color printing (including direct from flash cards). In addition, the device allows you to scan both ordinary documents and transparent originals (including images from photographic films), and provides the user with a wide range of additional options for working with digital images. ... >>

Series of ceramic diodes CeraDiode 23.01.2004

EPCOS launched the production of a series of ceramic diodes CeraDiode. The instruments are available in 0603 surface mount housings. They are about half the price of silicon diodes and are highly resistant to external electromagnetic influences. Ceramic diodes operate with reverse voltages from 5,6 to 22 V, response time is 0,5 ns. A set of 1206 diodes is also available in the 4 package. ... >>

MAX6957 LED Display Driver 22.01.2004

The DALLAS SEMICONDUCTOR-MAXIM MAX6957 LED Display Driver provides up to 28 ports for connecting LEDs or seven-segment displays. The chip has a serial 4-wire interface with a data transfer rate up to 26 MHz (compatible with several serial interface standards). Supply voltage 2,5 to 5,5 V. A 2-wire version of the MAX6956 is available. ... >>

72 Mbit static memory chip CY7C147X 22.01.2004

CYPRESS has released a 72 Mbit static memory chip CY7C147X. The chip is available in 42 different configurations, including 3,3V and 2,5V power supply and BGA, FBGA or TQFP packages. ... >>

New 103/4/5 RF Field Level Meter 21.01.2004

B&K PRECISION has released the new 103/4/5 RF Field Level Meter from 30 MHz to 2,8 GHz. The device has two displays: a bar indicator for displaying the field level and a 10-digit LCD display for displaying the frequency with a resolution of up to 0,1 Hz. ... >>

Flash card 64 Mbit DataFlash from ATMEL 21.01.2004

ATMEL Corporation introduced a 64 Mbit DataFlash flash card. DataFlash memory is designed for use in MP3 players, digital cameras, cell phones and various "handheld" devices. According to Atmel, there is still a lack of such products on the market and the company intends to provide samples for 128 and 256 Mbps in the near future. ... >>

Chip MSA66 powerful three-phase amplifier for working with electric motors 20.01.2004

APEX MICROTECHNOLOGY has released a powerful three-phase amplifier chip for working with electric motors. The MSA66 chip operates with supply voltages from 10 to 80 V and can develop a continuous output current of up to 5 A. It is available in a DIP-34 package. ... >>

ADE7758 and ADE7753 Energy Metering Chips 20.01.2004

ANALOG DEVICES launched the production of ADE7758 (three-phase version) and ADE7753 (single-phase version) microcircuits for measuring power consumption. Unlike previous samples, these microcircuits can also measure reactive energy. At a supply voltage of 5 V, the microcircuits have a low own consumption (ADE7758 - 70 mW, ADE7753 - 25 mW). Available in SOIC-24 (ADE7758) and SS0P-20 (ADE7753) packages. ... >>

A New Type of RF Power Amplifier for Mobile Phones 19.01.2004

AGILENT TECHNOLOGIES has introduced a new type of RF power amplifier for mobile phones with increased efficiency. ASRM-7813 and ASRM-7833 microcircuits are available in 4x4x1,1 mm surface-mount packages and operate in the 800 and 1900 MHz frequency bands. ASRM-7891 chip is designed for GSM/GRPS mobile phones and has dimensions of 6x12x1,8 mm. ... >>

AIWA TVX-F21D1 - CRT TV with built-in DVD player 19.01.2004

Aiwa introduced the TVX-F21D1. This is a 21" CRT TV with a built-in DVD player. The player supports DVD-Video and MP3 formats recorded on DVD-R, DVD-RW, DVD+R, DVD+RW, CD-R and CD-RW discs. The stereo system of the TV has the formula 2.1 and built-in subwoofer 18W digital amplifier power, 5 EQ presets TVX uses F21D1 CRT from SONY - FD Trinitron 100Hz progressive scan, 16:9 aspect ratio Dimensions: 653mm high x 530mm deep , width 496 mm, weight - 29,8 kg Sales are scheduled for February 1, 2004, the cost of TVX-F21D1 will be 500 dollars. ... >>

Combined dual laser DVD drive 18.01.2004

The Japanese company NEC announced the creation of a universal DVD drive that can play and record current and next generation discs. This drive has a red laser for reading and writing modern DVDs, and a blue laser for new generation discs. Moreover, both of these lasers are built into one optical head, so the dimensions of the new drive will be smaller than those of two-head drives. NEC plans to start selling these drives in 2005, but the exact timing will depend on how much new generation DVDs will be sold by then. NEC's first dual-power drives will most likely be intended for computers, and only then will they appear as part of consumer DVD recorders. ... >>

PHILIPS offers its own system for protecting distributed multimedia content 18.01.2004

Philips, according to CDRInfo, said that in six months it will introduce a system that gives users the ability to play audio and video discs on any device that supports this feature. Moreover, according to company representatives, the system will have protection against illegal copying of content. According to Philips experts, the so-called digital rights management (DRM) system, developed jointly with Sony, will be able to replace a host of proprietary systems. "Digital music stores" opened on the Internet over the past year use various DRM systems to protect against unlimited copying of songs. Such songs can only be played on PCs, CDs, and MP3 players that support the specific DRM system. As Philips Head of Intellectual Property and Standards said, "Users want an open system, and so does the industry." ... >>

DVD recorders will replace VCRs 18.01.2004

Currently, 50 million VCRs are sold worldwide every year. Nomura Securities estimates that the DVD recorder market will reach 2003 billion yen ($500 billion) in 4,6. Pioneer expects demand for DVD writers to more than double in 2004 (from 3,6 million to 8,24 million units). Market leader Matsushita Electric Industrial, as well as Pioneer and Toshiba, have a time advantage, but Japanese and foreign competitors are trying to catch up with new products. Sony, a little late in entering the market, decided to make a splash with the release of the PSX entertainment system, which combines a DVD recorder with a hard drive, a PlayStation 2 game console and a satellite TV receiver. ... >>

Low profile WLan adapter from ELECOM 17.01.2004

ELECOM started selling a tri-band WLan adapter LD-WL54AG/PCI for 80 USD. LD-WL54AG/ PCI supports IEEE 802.11a/b/g standards, 64/128/152 bit WEP encryption, the maximum possible connection is 54 Mbps. The LD-WL54AG/PCI adapter is very easy to install and on site. A big advantage of the adapter is its low-profile layout, board dimensions - 120x64 mm, weight - 80 grams. ... >>

USB alarm clock 17.01.2004

Which only devices were not connected to the USB bus - now it's the turn of alarm clocks. Information appeared on the Internet about the start of sales of the "WakeUp" USB alarm clock (JM-4424). This device is connected to a personal computer and can be easily configured using the special software "USB MP3 Clock Writer". Up to 50 music can be loaded as a wake-up call, source can be audio files and CD-DA discs. The program is compatible with Windows 98/98 SE/Me/2000/XP operating systems. The dimensions of the device are 150x79x136 mm, the weight is 250 g, and you can buy a USB alarm clock for about 23 USD. ... >>

2004 through the eyes of Intel 16.01.2004

Intel released a forecast from David Smith, a technology and communications authority, regarding its corporation. Here are some excerpts from this forecast. Thanks to the development of wireless technologies, computing and communication devices will be able to determine their spatial coordinates and use them in their work. It is this trend in various forms and types that will manifest itself most clearly in the coming year. The industries in which this trend finds its way will make a rapid leap forward, and this trend will have a significant impact on changes in the supplier-based business model, in the enterprise resource management scheme, and in how end consumers will behave when shopping. New technologies will be added to the already familiar Hyper-Threading and Centrino technologies: LaGrande, which provides increased security of information when using a computer, and Vanderpool, which gives users freedom of choice when partitioning the system. Reducing the size and with ... >>

Digital camera with built-in radio 16.01.2004

A novelty from Daisy Multimedia has appeared in stores - a digital camera DM334FM. Like the previous multifunction devices in this series, DM334FM combines not only a digital camera, but also an MP3 player, voice recorder and webcam functions. The advantage of the new model is the built-in radio receiver. The DM334FM has a 3,34 megapixel sensor, color LCD screen and 4x digital zoom. The digital camera has built-in from 16 to 64 MB of non-volatile memory, which can be expanded with SecureDigital or MultiMedia Card flash cards. Universal camera Daisy DM334FM replaces not only a conventional film camera, but also an MP3 player, voice recorder and radio. ... >>

WiFi MP3 player 15.01.2004

SoniqCast's new Aireo MP3 player can do one thing that the iPod can't (yet?) do - sync with a PC via Wi-Fi. The Aireo uses the same 1,5 GB hard drive as the Rio Nitrus and other players, and a flash card reader for transferring photos from digital cameras. In addition, Aireo contains an FM transceiver, which allows not only receiving FM stations, but also transmitting playback records in a small radius to household FM receivers. Estimated price of new items is about 300 USD. ... >>

Mobile phone is a tourist's friend 15.01.2004

Siemens, one of the leading players in the mobile technology market, plans to invest in the latest cell phone navigation system developed by Jentro Technologies. Jentro Technologies' solution could soon send traditional city maps to the past, as now tourists will only need a phone with GPS and Java support to find a route in the city or outside the city. The technology is simple: the user enters the end point of the route, the server processes the data and displays voice or graphic instructions for the correct path, taking into account the latest information, such as traffic jams. It is noteworthy that the Jentro solution is simple and understandable to the user, as well as inexpensive in terms of implementation. So we can assume with a high degree of certainty that Siemens will launch a new service this year. ... >>

Microsoft will get poorer 14.01.2004

Microsoft to pay $60 million to SPX Corp. as compensation for copyright infringement. We are talking about the use of technology in the creation of NetMeeting, protected by a patent owned by SPX Corp. Preliminary court hearings on this issue took place back in mid-November, and now the verdict has entered into force, as a result of which the software giant will have to fork out, paying the amount determined by the court by December 30. After paying compensation, the largest software developer will also have to license the right to use technology owned by SPX Corp. True, it is not entirely clear what Microsoft will do with the license - it is known that Bill Gates's subordinates have refused to continue using NetMeeting. ... >>

Some novelties of Consumer Electronics Show 2004 14.01.2004

The Consumer Electronics Show 8 was held in Las Vegas from January 11 to 2004. As expected, the majority of exhibitors represented wireless technologies, ultra-compact devices (such as cameras or camcorders), or devices of extremely high resolution and size (such as HD plasma displays). Note the novelties presented by a number of well-known companies. Samsung has introduced a portable LCD media center for high-quality video and audio playback (on sale since July). Philips showcased a 23-inch Streamium Wi-Fi LCD TV for home wireless networks (on sale since February). Netgear unveiled an 802.11n wireless router with a built-in print server and two USB ports (on sale since April), and Panasonic debuted the D-Snap family, the company's MP3 player/camera/video/audio recorder family that can record up to 10 hours MPEG4 video (on sale since March 2004). ... >>

Video hit from Gigabyte 13.01.2004

Gigabyte has announced the release of a video card based on the Nvidia GeForce FX 5950 Ultra - GV-N595U-GT. The operating frequency of the card is 520 MHz. The model is equipped with 356 MB of 256-bit memory and a full set of interfaces, supports VIVO and TwinView. The card comes with a whole set of games and useful programs: PowerDVD 5.0, 3D Album, Lara Croft Tomb Raider: The Angel of Darkness, Rainbox Six 3: Raven Shield Tom Clancy, Arx Fatalis. ... >>

Siemens introduced the mobile phone ST60 13.01.2004

Siemens has introduced a new mobile phone Siemens ST60, an improved analog of the ST55 model. The phone has a color LCD display showing 65536 colors, a digital camera with 4x zoom, support for JAVA applications, 40 tonal polyphonic melodies, a built-in WAP 2.0 browser, and is powered by a 750 mAh lithium-ion battery. For better control of your phone and digital camera, there is a 5-way joystick. Device weight - 87 gr. ... >>

Computing cluster technology from Apple 12.01.2004

Apple has said it is developing a computing cluster technology called Xgrid. Apple's division - Advanced Computation Group - just dealing with distributed computing networks, introduced a new platform designed primarily for scientific computing tasks. Already, Xgrid technology is being used to launch the BLAST gene programming application. The beta version of the platform can be downloaded for free from the Apple website. ... >>

Mobile phones do not pose a health risk in the short term 12.01.2004

Mobile phones are safe and do not cause cancer, British scientists said on Wednesday, who nevertheless called for a deeper study of the impact of mobile phones in the long term. An independent group of scientists, the National Radiological Protection Board (NRPB), which studies the effects of radio frequency waves on humans, said that so far nothing confirms that mobile phones are harmful to human health. "Overall, there is no cause for concern in the published study," the group said in a statement. At the same time, mobile phones came into use relatively recently, and it is too early to draw conclusions about their impact during long-term use. ... >>

Panasonic is preparing to release an IP mobile phone 12.01.2004

Panasonic Communications announced plans to launch a WLAN-capable IP mobile phone in early 2004. In addition, the company will produce WLAN equipment for corporate clients. This equipment will be fully compatible with IP-enabled PBXs manufactured by the company. ... >>

Sony SDM-HS73P - new monitor with Onyx-black technology 11.01.2004

Sony has announced the release of the Sony SDM-HS17P 73-inch LCD monitor. The main difference of the new monitor is the glare and reflection reduction system using Sony's Onyx-black technology. The response time of the SDM-HS73P is 16ms, the brightness value reaches 400cd/m2. The working resolution of the monitor is 1280x1024, the viewing angle is -160° in both planes. To make life easier for those who work a lot with their PCs, the new model comes with an Eco-Mode control mode. It gives you instant access to preset and custom brightness settings, allowing you to quickly set the most comfortable level for any application. ... >>

Western Digital introduced the device 3 in 1 11.01.2004

Western Digital Corporation announced the release of Media Center peripheral storage device. Packed in a stylish and comfortable package, the new product includes a 250GB WD Caviar SE hard drive, 8 types of memory card reader, USB 2.0 hub and the company's Dual-option Backup feature. Western Digital also introduced new external hard drives with USB 2.0/FireWire interfaces and Dual-option Backup. Several modifications of these devices of various capacities will be produced: 160, 200 and 250 GB. With Western Digital's Dual-option Backup feature, users can back up their data either automatically or on an as-needed basis with the push of a button on the device. Media Center and new external hard drives with Dual-option Backup are also capable of copying data. ... >>

Junk mail is expensive 10.01.2004

"Junk" emails, better known as "spam", are not so harmless. as it might seem at first glance. According to a survey conducted by Basex, a New York-based company, the total loss of the American economy from spam this year amounted to at least $20 billion. In large companies, the fight against unsolicited e-mail costs, on average, 600...1000 USD per year per user. It is these funds that go to the salaries of IT specialists, maintaining mail filters, paying for "extra" traffic, clearing user mailboxes and other actions related to spam protection. It must be assumed that the indicated amount does not include the loss of working time of those unfortunates who, after all these tricks, find "junk" mail in their working mailboxes. ... >>

Kodak cuts sales of film cameras 10.01.2004

One of the leaders in the photography industry, Kodak, has made an official statement about its plans to stop selling APS-class cameras and rechargeable 35mm film cameras in the US, Canada and Western Europe. The reduction in sales will not affect disposable 35 mm cameras. At the same time, in emerging markets such as China, India, Eastern Europe and Latin America, sales of film cameras are even planned to expand. Kodak explains its actions with low demand and profitability of sales of film cameras in some regions. Now the company intends to pay more attention to digital photography, which is gaining more and more popularity. ... >>

Portable camera with support for SD memory cards 10.01.2004

Deja View has released a portable camera Camwear Model 100 with support for Toshiba NAND Flash SD memory cards. A compact digital camera is attached to clothes and constantly takes a panorama with a viewing angle of 60 degrees and saves it to the buffer. By pressing the record button, the last 30 seconds of video or audio are recorded to the removable storage. Video is saved at 320x240 pixel resolution in MPEG-4 30 frames per second format and saved to an SD memory card. The Camwear Model 100 costs $400 and comes with a 64MB memory card, up to 512MB memory cards, and a 2000mAh Li-Ion battery. Phone-powder box Panasonic has released a mobile phone exclusively for ladies: the device at first glance strongly resembles an ordinary powder box. The model was named G70 and, of course, does not pretend to be the most functional phone - there is not even support for the popular MMS service. But there is a function specifically for the fair sex: as soon as ... >>

New Year's Hi-Tec gifts - cheap and useful 09.01.2004

The journalists of the newspaper "The Washington Post" conducted an unusual study. On the eve of Christmas and New Year, they tried to compile a list of gifts that would be nice for a computer lover and that, at the same time, would not hit too hard on the giver's pocket. Accordingly, none of the selected items should have cost more than 50 USD. In the first place were blank discs for recording digital computer or DVD discs. As they say, cheap and cheerful. Well, if you also add a special marker to the disk, with which you can make notes on the disks about what is actually recorded on the disc, then the recipient should generally be completely delighted. The second place was given by the American journalists to "branded" programs for burning CDs - a gift box with stickers for discs and the program itself costs less than the 50 USD stipulated in the condition. In Russia, however, for the same purposes they use completely free programs. ... >>

Trassir Digital Video Surveillance Systems 09.01.2004

The Russian company DSSL (Digital Security Systems Lab), a manufacturer of digital security systems, has introduced a line of professional computer video surveillance systems Trassir. The most advanced solution in the Trassir line of systems is the latest model with hardware signal processing Trassir DV-H, which allows you to record up to 24 channels of high-definition video in real time with synchronized sound. The vast majority of digital video recorders offered on the domestic market today carry out data compression by software, completely exhausting computer resources. In the Trassir DV-H system, video and audio signals are compressed in the advanced H.264 format entirely in hardware on the video capture card, which significantly relieves the computer for parallel tasks and increases the fault tolerance of the video server. This class of system is designed for use in dynamically changing environments where a clear image is required. ... >>

19" LCD display from Buffalo Corporation 08.01.2004

Buffalo Corporation released the FTD-G911 AD - 19" LCD display with a new MVA TFT matrix. The display went on sale at the end of December for about 770 USD. The maximum screen resolution is 1280x1024 pixels. The display brightness is 250 cd/m2, the contrast ratio is 600:1. , viewing angle - 170 degrees in any direction, response time - 25 ms Connection interface - D-Sub and DVI-I Dimensions - width 415 mm, thickness 193 mm, height 437 mm, weight - 7,4 kg. ... >>

High-end passive speaker from YAMAHA 08.01.2004

YAMAHA has released a new passive speaker system NS-pf7. The novelty will appear on sale at the end of this month, the cost of NS-pf7 will be about 700 USD. All speakers are magnetically shielded, allowing them to be placed close to a monitor or TV. The range of reproducible frequencies is 70 Hz. ..45 kHz, power - 25 W. The cost of this speaker is so high because of the high quality materials that are used in the system Overall dimensions YAMAHA NS-pf7 - thickness 143 mm. width 87 mm, height 183 mm, weight - 1,4 kg. ... >>

High-speed network will unite scientists from China, Russia and the USA 07.01.2004

Soon Chinese, Russian and US scientists will be able to collaborate using a new high-speed network that will include the first direct link across the Russian-Chinese border. An information highway separate from the public Internet networks will allow scientists to quickly exchange huge amounts of information and conduct various joint experiments in real time. Russian and US scientists have been using a direct connection for about 5 years, but the exchange of information between the Russian and Chinese sides often took place at meetings in the US. The last work should be completed on the Russian-Chinese border, and on January 5, according to the plan, the network should pass the first traffic. The ring of the network will run across the northern hemisphere, connecting Chicago, Amsterdam, Moscow, Siberia, Beijing and Hong Kong. The US National Research Foundation allocated 2,8 million USD for the creation of the network, Russia and China also contributed comparable amounts. ... >>

Original novelties on New Year's Eve 07.01.2004

Logitech held a presentation of its new original products that came to Russia on New Year's Eve, when it's so hard to find a good gift. QuickCam Sphere and diNovo Media were demonstrated. Logitech's new QuickCam Sphere webcam features pan and tilt functionality and original design. It's the first and only webcam that physically moves to automatically keep a human face in focus. The brand new diNovo Media Desktop wireless set is based on Bluetooth wireless technology. It consists of four components: a flat keyboard, a rechargeable MX900 optical mouse, a new multifunctional multimedia pad (MediaPad) for today's digital lifestyle, and a recharging unit that serves as a Bluetooth hub. Logitech diNovo Media Desktop is compatible with Windows 2000 and Windows XP operating systems. For MediaPad alerts, diNovo Media Desktop supports Outlook ... >>

Car cigarette lighter in the system unit 07.01.2004

A car cigarette lighter is a fairly common power source for actually mobile electronic products, as well as chargers for them. The adapter, made in the form factor 5,25", will allow you to use the same power interface at the computer. Such a thing costs 20 USD, is available in silver and black colors. ... >>

The Botanical Institute of the Russian Academy of Sciences is entangled in the Internet 06.01.2004

In one of the most famous scientific institutions of St. Petersburg - Botanical Institute. V.L. Komarov Academy of Sciences - completed the construction of the first stage of the LAN. To create a network of the oldest scientific institution in Russia, which includes a famous botanical garden and other important scientific collections, equipment manufactured by D-Link was used. The main tasks of the created network are to ensure stable access of the Institute's employees to the Internet, provide external users with the opportunity to access the scientific resources of the Botanical Institute and, most importantly, create a modern network infrastructure in this scientific institution. This project uses a wide range of D-Link products - from small desktop switches to Gigabit Layer 3 switches. At present, the first stage of building a LAN for 100 jobs has been completed. Next year, it is planned to continue work on expanding the network of the institute and reorganizing the databases used for scientific work. ... >>

Compact Optical Mouse by Microsoft 05.01.2004

Microsoft has announced compact wired optical mouse Compact Optical Mouse. A series of computer mice includes six models - white, blue, green, pink, dark blue and gray. Dimensions Compact Optical Mouse - width 50 mm, length 90 mm, height 30 mm. They are connected to the computer via USB and PS/2 interface. The cost of a three-button mouse will be 25 USD. ... >>

African fish can't stand the heat 05.01.2004

In an East African lake containing 18 percent of the world's fresh water, fish are disappearing due to global warming. Compared with the middle of the last century, catches in Lake Tanganyika, which lies on the borders of Congo, Tanzania, Zambia and Burundi, have fallen by 30 percent. For the inhabitants of these countries, Lake Tanganyika supplies 25-40 percent of all the animal proteins they consume. Meteorologists traced the history of the local climate for 80 years according to the records of weather stations and the isotopic composition of sediments at the bottom of the lake. It turned out that the air temperature in the region increased during this time by 0 6 degrees Celsius, and the deep layers of water - by 0,31 degrees. Experts in the next 80 years predict an increase in temperatures by another one and a half degrees and a further drop in fish stocks in the lake. ... >>

Oil electrorefining 05.01.2004

The oil circulating in the lubrication system of an engine, compressor or other unit becomes contaminated over time with metal and rubber particles formed during friction, as well as foreign dust. Therefore, the oil must be changed or cleaned periodically. Until now, it was cleaned on filters or centrifuges. The American company "Isopur Fluid Technologies" has proposed a new method. The oil is divided into two equal portions; one of them is passed over a negatively charged plate, the other flows down the same positively charged electrode. Dirt particles are charged accordingly. Then both portions are mixed, and oppositely charged particles are mutually attracted, forming rather large lumps that are easy to remove. The new technology allows you to clean the oil during the operation of the unit. Even particles smaller than 0,1 micrometer passing through any filter are removed. ... >>

hot tub for apples 04.01.2004

Both buyers and sellers demand good keeping quality from apples: it is desirable that the fruits be preserved until the next harvest. But in storage on apples, rot often appears, quickly spreading to healthy neighbors. It is the spores of the gleosporia fungus that have fallen on the skin of the fruit before harvesting, on the tree. Of course, you can treat apple trees with a fungicide, but there are already enough pesticides in our food. Employees of the German Institute of Nutrition in Karlsruhe came up with a simple and environmentally friendly way to improve the health of apples before storage. They dip plastic crates filled with apples for two minutes in water at a temperature of 53 degrees Celsius. Spores are reliably destroyed. Until now, experimenters have been limited to 20-kilogram boxes, but for the needs of trade, it would be much more convenient to immerse 300-kilogram lattice containers in water. Now the institute is developing an installation for such bathing. By the way, the method is quite accessible for amateur gardeners. ... >>

indoor horse 04.01.2004

The Japanese company "Matsushita" has released a "room horse", on which you can train in the art of riding at home or in the gym. The horse, nicknamed Joba (translated from Japanese as "riding"), is capable of performing all the movements of a real one, except for kicking or throwing the rider off his back. More than 15 thousand copies have already been sold, although the price, depending on the modification, ranges from a thousand to one and a half thousand dollars. Doctors have shown that Joba trains the rider's muscles well, especially the spinal ones, and helps restore health after a stroke. Training on a house horse also improves the condition of diabetics. ... >>

Teeth for eating meat 03.01.2004

After studying the structure of the teeth in the fossilized skulls of human ancestors, the American anthropologist Peter Ungar came to the conclusion that people began to eat meat regularly 2.5 million years ago. Ungar applied to the study of the relief of the working surface of the teeth the same methods that topographers use when studying the terrain. In his report at the conference "The Evolution of the Human Diet," Ungar said that Australopithecus Afar, who lived in Africa about three million years ago, judging by the shape of his teeth, still ate wild fruits, nuts, roots and tubers. And a skilled man, who appeared about 2,5 million years ago, already had teeth suitable for tearing raw meat. At the same time, the volume of the cranium increased: apparently, the constant eating of meat led to an increase in the size of the brain. ... >>

Get old from stress 03.01.2004

Researchers from the University of Heidelberg (Germany) studied the traces left in the body by stress loads. They subjected 19 volunteers to the same stressful situations: the experimental subjects had to speak without preparation in front of a large audience with a speech on a free topic and solve mathematical problems in their heads. After that, in the blood cells of the participants in the experiment, the content of a substance that activates the genes responsible for the aging process and chronic diseases, such as atherosclerosis and diabetes, greatly increased. Doctors say that this is why prolonged stress on the psyche, such as: working without interruptions at the computer, leads to the development of bodily diseases or at least accelerates aging. ... >>

Twilight of the Universe 03.01.2004

The universe is getting darker. More old stars die out than new ones are born. English astronomers from the University of Edinburgh, together with their colleagues from the University of Pennsylvania (USA), published a study from which it follows that a demographic crisis dominates the world of stars. The number of newly formed stars has been falling for six billion years. Astrophysicists came to this conclusion by examining 400 galaxies. ... >>

nanospring 02.01.2004

By depositing carbon vapor on a substrate with a catalyst, Japanese and American physicists managed to obtain subminiature springs 125 nanometers in diameter and several microns long. Springs can be stretched by 33 percent of their original length with an atomic force microscope probe, and the length of the released spring is restored. It is assumed that such details will be useful in nanomechanisms being developed now. In addition, if it is possible to obtain nanosprings in mass quantities, they can be mixed into composite materials to increase elasticity. ... >>

About the benefits of chocolate 02.01.2004

British and Italian doctors conducted experiments, for whom it was not at all difficult to find volunteers. A group of experimental subjects received one hundred grams of dark chocolate per day. The other group received the same amount of milk chocolate daily. The third washed down dark chocolate with a glass of milk An hour later, the amount of antioxidants in the blood of the experimental subjects from the first group increased significantly, while the amount of antioxidants in the representatives of the other two groups remained the same. The effect lasts four hours after eating a chocolate bar. Antioxidants are useful substances found in many types of plant foods. They neutralize free radicals - aggressive fragments of molecules that occur when oxygen is consumed by our body. In addition, antioxidants reduce the likelihood of developing certain types of cancer, the appearance of dangerous blood clots, and serve as a preventive measure against heart attacks and strokes. As the Italian biochemist Mauro Serafini suggests. Milk prevents the body from absorbing the antioxidants in chocolate. ... >>

underwater music 01.01.2004

The French company "Amficom" has begun production of diving tubes with a built-in radio receiver. The thin wire of the antenna is brought out through the tube, the receiver is in the mouthpiece. Radio transmissions are heard through the teeth: the vibration is transmitted to the bones of the skull and through them to the inner ear (this is how the deafened Beethoven listened to music - resting a wooden folder between his teeth in the piano body). Of course, the timbre of the music turns out to be quite peculiar. ... >>

The smaller, the stronger 01.01.2004

The properties of materials at the supermicroscopic level often turn out to be different than in the macrocosm. Crystals in a copper ingot are usually micron in size. French physicists obtained copper with crystals several tens of nanometers across (a micron is a thousandth of a millimeter, and a nanometer is a thousandth of a micron). It turned out that such copper is three times more tensile than ordinary copper. American researchers have shown that silicon microspheres with a diameter of several tens of nanometers are four times harder than ordinary crystalline silicon. They are obtained by depositing a gaseous silicon compound on a sapphire substrate. In terms of hardness, the balls are located between sapphire and diamond. The smaller they are, the harder. ... >>

Digital camera in lighter housing 29.12.2003

Digital Dream has released a "spy accessory" - a JB1 digital camera that fits inside a Zippo lighter. The difference between the JB1 digital camera, which contains a camera, a video camera, a webcam, a voice recorder and a storage medium, is that it is housed ... in a Zippo lighter case. The device can take pictures without the participation of the operator, photographing the surrounding objects at specified intervals. Thus, the camera can be left in a place of "operational interest" and then receive a digital chronicle of the events that took place. An additional convenience for covert shooting is provided by the design of the camera, which provides for instantaneous operation when the lid of the "lighter" is opened. The JB1 camera can save up to 150 pictures at 640x480 resolution. The JB1 recorder records up to 12 minutes of speech. Data is transferred to a computer via the USB interface. ... >>

Handbag lighting 26.12.2003

Brothers F. and A. Bree from Germany proposed the world's first device for interior lighting of a women's bag. This became possible thanks to the use of a new type of plastic, which easily takes a given shape and practically does not heat up from the heat of a built-in electric light bulb powered by a conventional battery. ... >>

8x DVD+R drive from MSI 25.12.2003

MSI has announced its new 8x DVD burner: DR-8A. The multi-format model (DVD+R/W and DVD-R/W compatible) has the following features. Recording DVD+R: 8x. Recording DVD+RW: 4x. Burning DVD-R: 4x. Recording DVD-RW: 2x. DVD reading: 12x CD reading: 40x. CD-R recording: 40x. Recording CD-RW: 24x. BURN Proof. HD burn. Over-burn: 99 min (870 MB), 90 min (800 MB). Buffer: 2 MB. ... >>

Mobile phones ruin your posture 24.12.2003

Interesting results were brought by the research of a group of scientists led by Paul Hodges. They conducted experiments on the influence of mobile phones on human posture. Volunteers were asked to walk around the room with connected sensors that recorded the degree of tension in the muscles of the back and abdomen. Another group of people walked around the room in silence. The results showed that when talking on a mobile phone, the muscles of the back tense up almost twice as much. And the tension of the back muscles, in the end, leads to violations of posture. Muscle overstrain is a consequence of not only the wrong position of the back, but also a violation of the normal rhythm of breathing. After all, when talking, the rhythm, when there was one breath and one exhalation for each step, is broken. The current research is not the first stone in the garden of mobile phones. Recall that there is information showing their relationship, for example, with brain cancer. However, this does not affect the rate of growth in the popularity of devices - according to ... >>

The cheapest color laser printer in the world 23.12.2003

The price of Konica Minolta's Magicolor 2300W color laser printer, which retailed for $699, has been officially reduced to $499, making it the cheapest printer in its class. Magicolor 2300W has a print speed of 16ppt in monochrome and 4ppt in color, a 200-sheet multi-purpose feeder, USB and parallel interfaces, and a print quality of 1200x600 dpi. Built-in memory: 32 MB RAM. This is the first color laser printer in history to break the $500 barrier. ... >>

Portable CD player with FM transmitter 21.12.2003

Princeton Technology has released the PMP-ACD portable CD player with a compact FM transmitter. The player model will be available in only one color - silver. PMP-ACD is equipped with "anti-shock" for 48 seconds, four fixed equalizer settings, song change notification function, automatic power off. Information about the duration of the composition, the number of the "track", the included modes, etc. is displayed on the monochrome LCD display of the wired remote control. In addition to the usual Audio CD player reads MP10 and Ogg Vorbis files recorded on CD-R/RW discs. With the help of an FM transmitter, you can broadcast music to several receivers at once (for example, a music center, radio, etc.). The player is powered by two AA batteries. Battery life -25 hours, battery life (NiMH) - XNUMX. ... >>

Mitsubishi DLP projector 19.12.2003

Mitsubishi Electric Corporation has introduced a new model of DLP projector - LVP-D2010. The main characteristics of the projector are as follows: brightness - 560 lumens (ANSI), lamp power 250 W, contrast ratio 3600:1, noise level - 28dB. To connect external devices there is digital DVI, two component (BNC and RCA), S-Video and composite video inputs. Projector dimensions - 305 x 150 x 430 mm, weight - 7,8 kg. LVP-D2010 has a 1,35x optical zoom, 1-megapixel matrix provides a resolution of 1280x720 pixels. The DLP projector will hit the Japanese market at the end of November for a suggested retail price of $8500. ... >>

CD with fingernail 18.12.2003

Some scientists predict a decrease in popularity, and in the future, the "death" of modern CDs. In the next five years, a new generation of information carriers may appear, the size of which will not exceed a human fingernail. Along with the reduction in size, the new drives will dramatically increase their capacity: now they can store more than a gigabyte of data. Interestingly, the new media does not contain any moving parts, such as the laser inherent in the CD-ROM; the new technology simply combined organic and inorganic materials in a special way. The new discs were developed by scientists at Princeton University, together with Hewlett-Packard Corporation. They managed to combine a polymer with a thin-film silicon base. This mixture is called PEDOT. It will take about five years to introduce disk nails into mass production. ... >>

Aircraft model crossed the Atlantic 17.12.2003

Aircraft model TAM-5 (transatlantic model-5), created by American amateur modeller Maynard Hill, independently made a transatlantic flight from Newfoundland to Ireland. The plane, weighing 4,9 kilograms (half the weight was fuel), made of balsa wood and Mylar film, was controlled by two on-board computers that were guided by navigation satellites. The distance of 3040 kilometers was covered in 38 hours and 23 minutes. Conclusion to the trajectory and landing was carried out manually from the shore by radio. The flight took place at an altitude of about 150 meters. Computers once a minute reported via satellite basic data about the flight: speed, altitude, coordinates, engine speed. The success of the flight was ensured by avionics - aviation electronics. ... >>

Paintings on demand 16.12.2003

The British National Gallery has 2300 paintings by great artists of the past in its collection. Museum workers intend to trade these treasures. Not originals, of course, but superbly executed digital copies. Using equipment provided by Hewlett-Packard, the paintings are scanned and digitized. If the best amateur digital cameras produce images consisting of 5-6 million dots, then the technology installed in the gallery allows you to copy pictures with a resolution of 100 million dots. Copies are sold in the souvenir shop at the museum. You order a painting from the catalog, choose the size (so far only the formats are from 21 by 30 to 42 by 60 centimeters) and in five minutes you will receive a copy. The cost of a copy is from 10 to 25 pounds. It is made on a high-quality color printer, and the colors are guaranteed not to fade for at least 70 years. Since autumn, visitors have been offered a choice of about a thousand paintings, but should be scanned by the end of the year. ... >>

Tunguska meteorite - once in a thousand years 14.12.2003

Over the past eight years, from February 1994 to September 2002, American reconnaissance satellites in geostationary orbits and covering almost the entire surface of the Earth with their observation have registered 300 cases of small asteroids invading the earth's atmosphere. The main task of this system is to detect possible atomic explosions, but, having not found any, the military shared data on flashes similar to explosions with astronomers. Asteroids with a diameter of 50-100 meters crashed into the atmosphere at a speed of several tens of kilometers per second. New data forced astronomers to reconsider the frequency of collisions of such celestial wanderers with the Earth. It turns out that a celestial body bursts into the atmosphere once a year, capable of releasing energy corresponding to 5 kilotons of TNT, and such cases as the Tunguska catastrophe (an explosion with a force of 10 megatons) can occur only about once every thousand years. Until now, based on ground-based observations, experts believed that ... >>

About the benefits of building underground parking 13.12.2003

During the construction of an underground parking lot in the very center of Kyiv, on Podil, archaeologists found the ruins of an unknown church of the XNUMXth century. The stone temple, built in the Romanesque style, stood on the bank of a stream. That's all that can be said about him so far. Scientists have not found any mention of him in the annals. The only clue is a legend about a young man who, during a pilgrimage to the Holy Land, lost a ladle in the Jordan River, and later found it in a stream, when he returned to Kyiv. On the bank of the stream, according to legend, the Church of St. Nicholas was then built. Perhaps it was the scientists who unearthed it. In defense of this version, there are two letters on the remains of the bell: N and I. But archaeologists are not sure that this is the first syllable of the name Nikolai. Interesting is the fact that the Orthodox Church was clearly built, scientists say, under Western influence. The name and history of the temple are still a mystery. ... >>

electric car 11.12.2003

The cordless wheelbarrow produced in France is designed for garden work. A lead battery with a capacity of 20 ampere-hours, feeding an electric motor with a power of 120 or 180 watts (two versions of the wheelbarrow are available), allows you to drive around between flowerbeds and beds all day, carrying loads weighing up to 120 kilograms. ... >>

Cosmetics 2000 years old 10.12.2003

During excavations in the London district of Southwark, a sensational find was made: in the ruins of a Roman temple, archaeologists discovered a round tin box. When it was opened, there was an oily white substance inside, and a sulphurous-cheesy smell hit the nose. Scientists have found nothing but an ancient Roman cosmetic cream. He is about 2000 years old, but he looks like the hostess opened the box just yesterday. On the surface, even traces of a finger that scooped up a fraction of the cream are visible. This is the first time that such ancient cosmetics have been discovered in such a state of preservation. Archaeologists are now awaiting the results of a chemical analysis of the cream. ... >>

The oldest wheel 09.12.2003

In Slovenia, near Ljubljana, among the remains of a pile settlement in a swamp, an ancient wooden wheel was found. Carbon-14 dating shows the age of this oak and ash piece as between 5100 and 5350 years. The previous record was held by two wheels found in Switzerland and southern Germany, they are 5000 years old. The diameter of the Slovenian wheel is 140 centimeters, the thickness is 5 centimeters. An oak axle was found nearby, on which, apparently, two such wheels were mounted. The oldest images of wheels are known from Mesopotamia, they are about 6000 years old, but the originals themselves have not yet come across to archaeologists. ... >>

Why there is no point in arguing about tastes 08.12.2003

In the human genome, about a thousand genes are responsible for the sense of smell. Of these, more than half do not work. This has been known for several years. And now Israeli geneticists have found that at least 50 olfaction genes behave differently in different people: they work for some, they are disabled for others. This, apparently, explains the fact that some people like the same perfumes, while others do not. And since the sense of smell largely affects the sensation of taste, fifty variable genes can determine our food preferences. Now the meaning of the old saying "Tastes differ". The discovery may be of interest to the food and perfume industries: it is possible that it makes sense to produce perfumes, drinks, chips, sweets not for everyone, but for certain genetic groups of the population. ... >>

clockwork water strider 07.12.2003

All the familiar water strider bugs deftly run on the surface of the water. The body and legs of the bug are covered with water-repellent hairs. The front pair of legs serves only to capture victims, the middle insect repels itself from the surface tension film, and the back pair steers. Studying the process of water strider movement through water, researchers from the Massachusetts Institute of Technology (USA) added blue dye to the water. The resulting images show how a thin film of water bends under the weight of an insect and how "whirlpools" appear in it. To confirm the correctness of their conclusions, the engineers made a moving model of a water strider. The body is aluminum, the legs are made of stainless steel, the motor is rubber, like in model aircraft. Legs are greased. From one factory, the model runs 20 centimeters through the water. ... >>

laser instead of diamond 05.12.2003

The Institute for Mechanics of Materials (Freiburg, Germany) has created an installation for cutting flat glass with a laser. The usual method of cutting - with a diamond or carbide wheel, followed by breaking along a scratched line - is inaccurate and requires subsequent processing of the edges of the glass. In addition, this is a harmful production: fine glass dust flies into the air. The laser draws a thin "hot line" along the glass, along which internal stresses arise, and the glass breaks in this place. There is no dust, no chips, no microcracks. Glass of different brands and different colors absorbs light in different ways, so you have to use different types of lasers. ... >>

Radar of passers-by 04.12.2003

The Georgia Institute of Technology (USA) is developing a way to identify a person by gait, and this is done using radar. The gait is as unique to each of us as fingerprints or facial features. Of course, it is often possible to recognize a friend from afar by their characteristic gait even without a radar, but it is impossible to present these recognizable features in a strict quantitative form. In addition, the radar sees passers-by in the dark and in thick fog. So far, the characteristic features in the radar reflection of a walking person can only be recognized from a distance of 15 meters, and the accuracy of the determination is more than 80 percent. The goal of the experimenters is to achieve stable identification in 90 percent of cases from a distance of 150 meters or more. These experiments could lead to a new way of identifying wanted criminals. In addition, the features of gait can be used in medicine for the early diagnosis of certain diseases, such as multiple sclerosis, ... >>

Plants behind the Great Wall of China 02.12.2003

The Great Wall of China, built in the 10rd century BC to protect against nomadic raids, turns out to have served as a barrier to flora as well. Chinese botanists compared four types of insect pollinated plants and two wind pollinated plants living on both sides of the wall. Significant genetic differences have been found, and they are smaller in plants pollinated by wind than in plants requiring insect pollinators. Apparently, the wall, which in some places reaches a height of XNUMX meters, prevents insects with pollen from flying to the neighboring meadow behind the wall. Perhaps if the wall stands still for a few thousand years, the groups of plants on either side of it will accumulate so many differences that they will turn into independent species. ... >>

Printed lasers 01.12.2003

Specialists from the Technological University in Graz (Austria) learned how to print lasers. The laser is printed with a stamp, which is etched with a structure of ultramicroscopic grooves and ridges at intervals of 400 nanometers. A special electrically conductive polymer dissolved in a rapidly evaporating solvent is dropped onto this matrix. When the solvent dries, an orange film of polymer with laser structures remains on the matrix. When an electrical voltage is applied to the ends of the strip, a laser beam shoots out of it, powerful enough, for example, for use in a CD or DVD player or in a fiber communication system. ... >>

Sharp and Pioneer TVs are recognized as the most environmentally friendly 30.11.2003

Sharp and Pioneer products are recognized as the most environmentally friendly products among similar devices from Japanese manufacturers of video devices based on liquid crystal screens and plasma panels. The leading positions among LCD TVs were occupied by 30-inch and 32-inch high-definition LCD TVs, jointly produced by Sharp, Pioneer, Sony Corp, Toshiba Corp, Hitachi Ltd and Matsushita Electric Industrial Co Ltd. At the same time, both the safety of production for the environment and the design features of the television receiver itself were taken into account, providing additional measures for energy saving during the operation of the device. However, the absolute winner was the Sharp Aquos LC30AD1 TV. Its feature is the original design of the light-diffusing screen located behind the LCD matrix. Due to the unusual design, its creators managed to reduce the power of the light flux necessary for image formation by a quarter. As a result, Aquos LC30AD ... >>

New DVD recording format proposed 29.11.2003

The 216 companies that make up the DVD Forum will jointly introduce a new and improved DVD recording format, the so-called "enhanced DVD". The new technology provides the same recording density as the existing DVD format, still uses a red laser as a recording device, but the enhanced DVD will provide Internet connectivity and a fast recording mode. Forum participants include well-known electronics manufacturers such as Hitachi Ltd, Matsushita Electric Industrial Co Ltd, Toshiba SOF, Sony SOF and Pioneer SOF. The new format will allow storing network addresses and special digital keys that authorize the owner when connecting to digital record stores. It is assumed that the first devices that support the updated DVD format will appear on the market as early as 2004. It would probably be useful to recall that there is also a fundamentally new technology for recording digital video, based on the use of ... >>

Multi-Voltage Power Supply Controllers for LCD Monitors 28.11.2003

Maxim Integrated Products introduces the MAX1530/MAX1531, which provide all the supply voltages needed to power TFT LCDs. Both instruments contain a high performance buck regulator operating at a fixed frequency. The stabilizer has a synchronous structure based on N-channel field-effect transistors, which allows it to operate with an efficiency of up to 93%. The high operating frequency allows the use of inductors and capacitors with a small nominal value, which allows building compact power supplies. The MAX1530 contains three linear regulator controllers, while the MAX1531 contains five regulators to provide power and offset to the LCD. A programmable power-up sequence makes it easy to control the stabilizers. MAX1530/MAX1531 have a soft start function to avoid current surges when turned on. The output current limiting function can protect the power supply ... >>

Miniature chipset for mobile cameras 27.11.2003

Korean firm Pantech&Curitel, a former division of mobile communication technologies of Hyundai Electronics, announced the creation of its own chip and module for cameras embedded in mobile phones. Thanks to this invention, the company will stop importing electronic "stuffing" from other countries. Pantech&Curitel allocated 18 USD million a year for further development of the module. She is ready to spend such money in order to become noticeable in the world market. In addition, according to the developers, the new module is the smallest in the world. ... >>

Supercomputer in Poland 26.11.2003

Intel introduced Poland's fastest supercomputer installed at the Academic Computing Center in Gdansk (TASK). The supercomputer is a high performance computing cluster of 128 Optimus NSERVER systems and a total of 256 Intel Itanium processors. The cluster has a throughput of 1,3 triplion floating point operations per second (1,3 teraflops). It is expected to enter the top ten of the official ranking of the world's fastest supercomputing resources Clusters TOP 500+. The computing power of the new cluster will provide invaluable assistance to the scientific community in Poland and will help to conduct pioneering research in the fields of chemistry, biotechnology, molecular modeling and computational fluid dynamics. ... >>

DS1087L 3V EconOscillator Single Chip Broadband Oscillator 25.11.2003

Dallas Semiconductor introduces the DS1087L, the world's first 3V broadband single-chip EconOscillator. This instrument has a fixed operating frequency and does not require any programming. With an output smoothing ratio of 2% or 4%, the DS1087L has 20dB less spurious EMI than comparable crystal oscillators. The EconOscillator DS1087L is a clock generator that generates a broadband (smoothed) fixed frequency square wave in the range from 260 kHz to 133 MHz. The device allows you to replace the crystal oscillator and reduce the level of peak radiation by smoothing the output signal by 2% or 4%. The DS1087L has a low power mode and an output blocking function, which makes it suitable for use in power critical applications. The DS1087L is currently available in 3V, with a 5V version planned for the near future. ... >>

Sony stops production of CRT TVs in Japan 24.11.2003

In accordance with the second stage of the planned restructuring plan, presented in May, Sony plans to completely suspend the production of CRT TVs in Japan by mid-2004. and other flat screen devices. Sony plans to invest 2 billion yen to restructure its electronics business. The company's goal is to increase operating profit to 300% by fiscal year 2006 (which ends March 31, 2007) from the current 10%. ... >>

Created a hybrid mobile phone and TV 22.11.2003

The new mobile telecommunications technology was presented by a European consortium of researchers, which included scientists from Brunel University, the laboratories of Philips, Motorola, France Telecom and the German research organization in the field of multimedia technologies IRT. The project, called Cismundus, developed a prototype device of the same name, which implemented a hybrid of a mobile phone and a digital TV. Cismundus allows you to receive signals from terrestrial digital television networks, radio broadcasting and carry out mobile communications from the same terminal. Cismundus was first presented at the IBC show in Amsterdam. The new device looks like a tablet PC. It uses a special antenna for receiving digital TV. An interesting feature of Cismundus is the ability to automatically switch to the mode of receiving the same digital TV channel via cellular networks (using GPRS) if the digital TV terrestrial signal is lost. Researchers explain neo ... >>

Windows source code has become more accessible 21.11.2003

Microsoft announced the expansion of its Shared Source Code Sharing program, giving hundreds of Most Valuable Professionals (MVPs) access to all of the Windows 2000, Windows XP, and Windows Server 2003 source code. MVPs will be able to give their own assessment of one or more Microsoft products. The Shared Source project has existed since 1800 and not only serves to improve the development of new applications, but also is a response to criticism from the open source community. But while the company's most valued professionals already had access to the source code for certain software products, such as Windows CE, .NET, Visual Studio, and Passport Manager, now for the first time, they will be able to examine the code for the Windows operating system itself. According to Microsoft itself, such a move will not only be useful for the global technical community, but will also serve to strengthen support for anyone using the platform. ... >>

Rover Computers re-releases single-spindle laptops 20.11.2003

Rover Computers has resumed production of single-spindle notebooks, partly due to increased consumer interest in recent months for lightweight and compact mobile computers that are convenient to take with you on trips. A new model of the RoverBook Partner series of mini-notebooks has gone on sale. Among single-spindle laptops with a 12-inch SXGA+ screen, the RoverBook Partner E210 has an affordable price - 995 USD in the configuration of VIA C1 processor, 256 GHz / 20 MB RAM / 100 GB hard drive / LAN1,33 / Oc Windows XP Home adapter. This model is quite light (only 265 kg) and compact (220x23xXNUMX mm). ... >>

PT8 Neo - motherboard based on VIA FSB800 chipset from MSI 19.11.2003

MSI has announced a new PT8 Neo motherboard based on VIA's first FSB4-based P800 chipset, the PT800. The PT8 Neo motherboard supports 800MHz FSB and DDR400/333/266 memory standard. The board is manufactured to provide high performance for scalable chipset solutions (Socket 478 for Intel Pentium 4 processors). The PT8 Neo motherboard is also equipped with MSI's exclusive DOT (Dynamic Overclocking Technology) with a maximum of 15% automatic overclocking. The PT8 Neo motherboard also supports the Serial ATA interface and the RAID standard. Expansion slots are available - 5 PCI slots and 1 AGP 8X port. With optional 5.1 channel audio, users can comfortably enjoy playing PC games or watching DVD movies at home. The PT8 Neo motherboard is equipped with a coaxial SPDIF connector. ... >>

Traces of the first Europeans 18.11.2003

On the western slope of the extinct volcano Roccamonfina, 50 kilometers from Naples, archaeologists from the University of Padua discovered traces of three human beings left 325-385 thousand years ago. They were representatives of the "upright man" species. Their growth is estimated at one and a half meters, foot size - 34th. The distant ancestors of Europeans, descending from the mountain, walked along a layer of volcanic ash, which later petrified, preserving footprints. One of the walkers slipped and left a handprint on the ashes. These are the oldest human footprints in the world, and the oldest hominin footprints are found in Tanzania - they are about 3,5 million years old. It is curious that the locals, having known these footprints for a long time, considered them to be the footprints of the devil: who else can walk along the volcano, leaving prints in the stone? ... >>

The medicine is expired - the lid does not open 17.11.2003

British engineers from the University of Salford have developed a screw cap for a jar of pills that stops opening when the medication expires. The screw thread is applied not to the neck of the jar, but to the cuff connected to the neck with a layer of gradually decomposing polymer glue. By changing the composition of the adhesive, it is possible to regulate the period of its decomposition, adjusting it to the expiration date of the medicine. If the glue has decomposed, the lid, when you try to unscrew it, simply begins to rotate freely on the neck of the jar. ... >>

rare earth piglets 15.11.2003

From the beginning of 2006, the addition of antibiotics to livestock feed will be banned in Europe. Therefore, scientists are intensively looking for such additives that, while increasing weight gain, at the same time would not cause the appearance of microbes resistant to antibiotics in consumers of animal products. Having learned that rare earth elements, such as lanthanum and cerium, have been mixed into pig feed in China since the 60s of the last century, employees of the University of Munich began testing these additives on pigs, chickens and quails. Weight gain has increased in some cases by 7 percent. It is not yet clear how these supplements work, but they are thought to improve digestion and strengthen the immune system. ... >>

The tablet makes a diagnosis 14.11.2003

In the laboratories of the University of the Canadian city of Calgary, a pill is being developed that itself makes a diagnosis and, if necessary, treats. In a tablet, not exceeding the size of a regular one, an electronic sensor is only 10 times larger than a red blood cell. When the tablet is swallowed, the sensor measures, for example, the temperature. If it is elevated, an antipyretic is released from a reservoir with a capacity of one milliliter. The sensor can detect acidity and deliver an agent that normalizes it into the stomach. Moreover, the amount of the released drug depends on the magnitude of the deviation of the measured indicator from the norm. After one or two days, the pill that has done its job leaves the body naturally. Human trials have not yet been conducted. Before moving on to them, the developers want to increase the capacity of the battery hidden in the tablet. It is enough for 4 hours of work, but it would be necessary to increase the charge at least three times. ... >>

Healing session of an earthquake 13.11.2003

Many of the survivors of the catastrophic earthquake in 1999 in Turkey (7,4 on the Richter scale, thousands of deaths) still cannot come to their senses: they developed the so-called post-traumatic syndrome. The victims do not find a place for themselves, do not sleep well, are afraid to stay indoors, and women who survived the earthquake are three times more likely than men to develop this nervous breakdown. Without treatment, only 10 percent of patients recover from such fears. Turkish physician Metin Basoglu used a powerful geophysical installation - an earthquake simulator to treat post-traumatic syndrome. The platform, on which anti-seismic structures of buildings and machines are usually tested for strength, vibrates with a given amplitude. An hour stay on such a simulator, as it turned out, cures 80-90 percent of patients, provided that they themselves hold a remote control with which they can regulate the duration and strength of the shocks. ... >>

The student is recognized by the eyes 11.11.2003

Since September 60, a school in Sunderland (England) has installed a system for identifying students by their eyes, more precisely, by the pattern of blood vessels on the retina, as unique to each person as fingerprints. The system, which costs £15, is supposed to speed up and improve service in the school cafeteria and library. Schoolchildren pay at the beginning of the week for daily breakfasts, and the money is accepted by the machine. Every day, a student, coming to the dining room, looks from a distance of 12 centimeters into the eyepiece of a special retinal scanner - and the cost of the dishes taken by him is deducted from his personal account. In addition, the child's special dietary requirements related to allergies, other illnesses, or the family's religious practices may be entered into the computer. If a student takes a dish that is not allowed to him, the system will warn the attendant in the canteen about this. Throughput - up to XNUMX people per minute, which is five times faster than conventional service through the cashier. The new EU system ... >>

Paint blacker than black 10.11.2003

A team of researchers from the National Physical Laboratory in Teddington (UK) has created an ultra-black paint that reflects only 0,35 percent of the light falling on it. Regular black paint reflects at least 2,6 percent of visible light. Super black paint is made from a combination of nickel and phosphorus. The surface to be blackened is immersed in a solution of nickel salt and sodium hypophosphite. As a result of a chemical reaction, a layer of nickel-phosphorus compound is obtained. The main thing here is to ensure that the proportion of phosphorus is six percent. Then, when immersed in nitric acid, microscopic craters are obtained on the surface of the black layer, in the walls of which light rays are absorbed. The new blackening method is suitable for many materials, including metal and ceramic. It can be used in the manufacture of optical instruments, telescopes, cameras. But one square centimeter of such a particularly black surface costs more than 150 euros. ... >>

Chinese sand found in the Alps 09.11.2003

Geographers from the University of Bordeaux (France), analyzing the dust on the snow that fell in the Alps and the Pyrenees, found grains of sand brought by the wind from the Taklamakan desert in northwest China. Moreover, this sandy dust flew in a roundabout way, east of the desert. Having flown 20 thousand kilometers, it crossed the Pacific Ocean, the North American continent, the Atlantic and was deposited on the snow in the mountains of Europe. The grains of sand were carried by high-altitude winds, the speed of which reaches 200-300 kilometers per hour, the flight took two weeks. Scientists analyzed a layer of snow that fell in the winter of 1991 and was buried under layers that have been deposited since then. It was possible to determine the origin of sand grains by their mineralogical and isotopic composition. And their path was calculated according to information about global wind flows in the winter of 1991. ... >>

Disinfection in a bowl 08.11.2003

Chinese biochemist Hong Sanwu, who works at the University of Alberta (Canada), has found a way to disinfect food that can be contaminated with pathogenic bacteria right in the plate. If you had to have a bite to eat in a not-so-clean eatery and you are afraid of food poisoning, it is enough to sprinkle your portion with a powder that has neither taste nor smell, and you can safely start eating. The miraculous remedy is essentially an egg powder made from eggs obtained from laying hens, which were previously injected with E. coli and salmonella - microorganisms that most often become the culprits of food poisoning. Immunity passes into the yolk of eggs of vaccinated laying hens. The immunoglobulin contained in such a yolk does not kill bacteria, but deprives them of the ability to stick to the walls of the human intestine. They pass through the intestines without having time to multiply and cause harm. ... >>

Mercury against the background of the Sun 07.11.2003

On May 2003, 13, a rather rare astronomical event took place - the passage of Mercury across the solar disk. The process took about five hours, during which the attention of astronomers around the world was focused on a small black circle on the Sun. This phenomenon is repeated over the course of a century 14 or 1631 times. Astronomers first observed it in 1993. The last time Mercury was seen against the background of the solar disk was in 2016, the next such event is expected in XNUMX. ... >>

When the water intoxicates 05.11.2003

Psychologists from the University of Victoria (Wellington, New Zealand) conducted a curious experiment. 148 students were divided into two groups. In a university bar, both groups drank non-alcoholic tonic from identical glasses. But one group was told that they would be treated to a tonic with vodka, and accordingly the same tonic was poured into a glass from a vodka bottle. Those who drank "vodka" experienced a slight intoxication, swayed slightly on the go, their speech became stammering. Both groups were shown a short film re-enacting the crime and then given a description of the events shown, which deliberately deviated from the plot of the film. "Drunk" more often than sober claimed that the text accurately retells the content of the film, and were absolutely sure that they were not mistaken. ... >>

digital weeding 04.11.2003

To combat weeds, scientists from the University of Bonn (Germany) have created an agricultural sprayer, which itself selects the right remedy against each weed. Until now, a mixture of herbicides is used to destroy harmful plants, each of which "takes" only a part of the weed species. The result is an overexpenditure of pesticides, excess poisoning of the crop and the environment. The smart sprayer is equipped with three digital cameras that transmit images to two computers. The first sifts out everything in the picture, except for plants, the second compares the images of plants with the bank of information on weeds embedded in it, determines the appropriate herbicide for each, and remembers at what point in the field this weed was found. During the second pass, using the map compiled in this way, the computer gives each weed an individual dose of a lethal herbicide for it. In the future, the authors of the development say, they intend to combine both stages of the process in one pass across the field. ... >>

Oncologist's mine detector 02.11.2003

The Italian company "Galileo Avionica" has created a portable device "Trim-prob" for detecting tumors, which, according to the principle of operation, resembles a mine detector. He appeared as a by-product of the development of a mine detector that reacts to anti-personnel mines in a non-metallic case. A thirty-centimeter "magic wand", which the doctor passes over the body of the subject, emits microwaves with a frequency of 400-1350 megahertz. The tumor, if present, responds with a resonance at a frequency of about 400 megahertz: frequency beats occur. The received signal is analyzed by a computer. The device is relatively cheap and can be used for mass medical examinations. Tests carried out in hospitals in Milan showed that prostate cancer was correctly diagnosed in 93 percent of cases, but it was also erroneously detected in 18 percent of healthy people. The percentage of correct detection of breast cancer is only 66 percent. Trimprob is now being tested for tumors of the lungs, stomach, liver, and intestines. ... >>

Islamic phone 01.11.2003

As you know, Muslims should pray with their faces turned towards Mecca. In Malaysia, they began to produce a cell phone that, anywhere on Earth, shows the direction to this sacred city. It is enough to turn your face to the north and enter the name of the city where you are in the phone - and an arrow appears on the device screen, indicating the direction to Mecca. One cellular phone company in Malaysia even offers an additional service: for a small fee, the phone will remind you five times a day with an inscription on the display that it is time to pray. ... >>

Analog Devices 24-bit ADC 30.10.2003

Analog Devices introduces the AD24 7791-bit sigma-delta A/D converter with the industry's lowest power consumption and superior accuracy. Consuming 65µA from the power supply, this converter outperforms its nearest competitor by 25% in power consumption and 6 times in resolution. Supplied in an MSOP-10 package and quite competitively priced, this ADC also includes an input buffer and an internal clock, making it one of the most highly integrated sigma-delta ADCs on the market. The new 24-bit sigma delta ADC07791 also has a 16-bit version, the AD7790. They have differential inputs that may or may not be buffered. The output update rate is programmatically set. There is also an ADC without a buffer and with a fixed output update rate of 16 6 Hz, 16 and 24-bit versions - AD7788 and AD7789. All ADCs are ... >>

Dell Expands Range 29.10.2003

Dell, a well-known computer supplier, has announced the expansion of its activities. The firm intends to establish a trade in music files and offer customers such products as digital music players and flat-panel TVs. The company plans to get a part of the market with its old trick, offering new items before the holidays. In the Internet music market, however, the firm will have to compete with Apple iTunes, which has successfully started selling MP3s to Mac users and plans to switch to Windows users as well. Also, several other firms have already chosen the online music market. ... >>

An alternative to SMS messages will appear in Europe 27.10.2003

The new "push-to-talk" service turns a mobile phone into a "walkietalkie" with unlimited range. A subscriber is selected from the list of recipients, and by pressing a button on the phone, a phrase is pronounced for up to 30 seconds, which almost immediately sounds in the dynamics of the recipient's mobile phone. In the US, this service is very popular and has about 12 million subscribers. This system uses a very cheap GPRS (General Packet Radio Service) radio link to send messages, but the phone is always on the line. The created message is transmitted via this radio link to the Internet server of the service provider, and then via the Internet reaches the message server in the desired country and is broadcast. Due to the low cost of communication, the cost of such voice messages does not exceed the cost of text messages, even with international transmission. To use this connection, your phone must support a number of special features. ... >>

Intel is developing its Centrino laptop 25.10.2003

Intel is developing its own laptop based on Centrmo, codenamed Newport. The main components of the new platform (working title Sonoma) will be a Dothan processor (created using 90 nm technology), a new Alviso dual-channel chipset with DDR2 memory support and a next-generation graphics core with DirectX9 support. There will also be a built-in PCI Express bus. The developers report that you can work with Newport as with a regular keyboard laptop, or you can unfasten the keyboard and work with the screen as with a touch tablet PC. At the same time, the device will support new wireless standards, including 802.11g and 802.11n. ... >>

Shave and heart 23.10.2003

It seems that the now fashionable three-day stubble is dangerous to health. Epidemiologists from the University of Bristol (England) have found a link between shaving and men's health. For twenty years, they followed 2438 men aged 45 to 59, dividing them into two groups: those who shaved every day or even twice a day, and those who could skip this morning procedure once or twice a week. . It turned out that during the observation period in the first group, 31 percent of men died from heart attacks and strokes, and in the second - 45 percent. It turns out that the risk of stroke in rarely shaving is 90 percent higher, and heart attack - 30 percent higher than that of neat people. What explains this difference - the doctors do not yet understand. Other features are associated with less frequent shaving. Men who skip shaving are more likely to be physically active, more likely to be single, come from poor backgrounds, smoke more often, and are prone to hypertension. Perhaps those who can afford to shave ... >>

With a vacuum cleaner on the belt 22.10.2003

The Danish company Nilfisk has begun producing a small model of a vacuum cleaner mounted on a belt, like the now popular belly bags. The vacuum cleaner, easy to use, weighs less than three kilograms, its power is 700 watts. ... >>

Meteorites in limestone 21.10.2003

Large quantities of ancient meteorites have been found in several quarries in a vast limestone region in southern Sweden. This limestone accumulated from marine sediments over a period of about two million years, and appeared on land about 480 million years ago. Meteorites lie in those layers that were formed 500 million years ago. The intensity of meteorite fall is now low: on average, one event per year for every 12,5 thousand square kilometers of the Earth's surface. Half a billion years ago, judging by the Swedish find, meteorites fell a hundred times more often. Astronomers suggest that then some powerful collisions occurred in the asteroid belt, as a result, a large asteroid broke up into separate stones and some of its fragments fell to Earth. Now scientists intend to examine similar deposits of the same period in China and South America. ... >>

Disposable digital camera 20.10.2003

Cheap disposable film cameras have become a common commodity for those who shoot one film a year - on vacation. And now the American company "Ritz" has launched disposable digital cameras on the market. The 11-megapixel Dakota Digital camera costs only $200 and produces photos of the same quality as similar "reusable" cameras costing at least $25. True, it has neither an electronic display nor a jack for connecting to a computer, so it is impossible either to view the pictures taken on the camera itself or to transfer them to the computer's hard drive on your own. But there is a flash and self-timer. In total, 11 photos fit in the camera's memory. You can erase the last shot if you think it will fail. After the memory is full, the camera is taken to the photo center, where for another $ 25 they make 10 prints 15 by 25 in size, an overview print of all XNUMX frames on one sheet and give a CD with recorded images for viewing on a computer. ... >>

Black box for man 18.10.2003

Newly founded American company "Bodymedia" specializes in technical means of tracking human health. The bracelet, designed by the company, is worn on the arm above the elbow. Inside the device weighing 85 grams are sensors for motion, temperature, pulse and electrical resistance of the skin. The device for five days records the pulse rate, skin temperature, its resistance (it indicates the release of sweat), the temperature of the air near the skin (which allows you to calculate the release of heat by a person) and physical activity. All this data is then transferred wirelessly to a computer and sent via the Internet to a doctor who makes recommendations for lifestyle changes. The recorded parameters allow you to notice, for example, hypodynamia or restless sleep of the wearer of the bracelet, not to mention an increase in temperature or heartbeat. In the future, the company intends to add some other sensors to the device, such as blood pressure. ... >>

Hydrogen gas station 16.10.2003

The world's first gas station that sells not gasoline, but hydrogen, has opened in Reykjavik, the capital of Iceland. So far, however, in this island nation of about 280 thousand inhabitants, there are only four consumers of a new type of fuel: an experimental model of a hydrogen Mercedes and three Daimler-Chrysler buses, also experimental. The first mass-produced hydrogen-powered cars may appear in 2005. ... >>

Hookah for the steamer 15.10.2003

In the waters of the North and Baltic Seas, ships annually emit 1,3 million tons of smoke into the air. The main air pollutants in the large port city of Hamburg are not cars, of which there are also many, but ships. Cleaning filters have been on the exhaust pipes of cars for more than a decade, but steamships and motor ships have begun to acquire filters only now. The Canadian company DME International, originally specialized in brewing and pharmaceutical equipment, now produces filters for ship pipes. The action of the filter is based on the principle of a hookah: the smoke is passed through sea water in a special chamber that provides complete mixing. At the same time, 80 percent of soot and smoke particles, 90 percent of sulfur oxides and 70 percent of hydrogen chloride are absorbed. Exhaust noise is reduced by 35 decibels. The water is then filtered through layers of sand and activated carbon before being thrown into the sea. Dirt deposited on the filter is delivered to the port and buried on ... >>

Computer hits 13.10.2003

The Spanish company "Polyphonic HMI" has created a computer program that, after listening to the melody of a new pop song, instantly determines what are its chances of becoming a hit. To do this, the developers of the program analyzed 300 thousand songs, taking into account such indicators as melody, harmony, rhythm, chords, tonality, and then entered into the machine data on the commercial success of each analyzed song - a place in the charts and the number of discs sold. It was possible to identify the features that ensure the success of the song. This possibility is already being used for the selection of melodies intended as a background sound for advertising or sound screens for radio and television programs. So far, the program does not allow synthesizing a XNUMX% hit without the help of a composer, but it seems that this improvement will not be the case. ... >>

glowing fish 11.10.2003

Genetic engineering has made its way into the home aquarium. Biologists from the National Taiwan University introduced a gene from a luminous jellyfish to a common aquarium zebrafish, and the fish began to glow in the dark. At first, the goal of genetic engineers was to make it easier to observe the internal organs of these translucent fish. But a photo of a fish glowing with a greenish ghostly light, shown at a scientific conference, was seen by a representative of a company that breeds and sells aquarium fish. By order of the company, the zebrafish genome was supplemented with a red glow gene isolated from sea coral. The resulting breed was named "Night Pearl". The next idea of ​​fish farmers is to add a gene of cold resistance from ordinary river fish of middle latitudes to tropical aquarium fish, so that you don’t have to worry about heating the water in the aquarium. But ecologists fear that such fish, having slipped out of the aquarium, will breed in natural reservoirs and possibly crowd out native species or cause other damage to nature. ... >>

Avalanche of balls 09.10.2003

A group of Japanese and British glaciologists, studying the formation of snow avalanches, dropped 550 celluloid table tennis balls from a springboard at the Miyanomori ski resort near Sapporo in Japan. High-speed filming made it possible to reveal patterns of snow flow movement that are applicable to some other geophysical phenomena - for example, to mudflows and volcanic lava flows. ... >>

How many computers in the world 08.10.2003

According to statistics published in the annual Almanac of the Computer Industry, there are now about 663 million personal computers in operation worldwide. But more than two-thirds (448 million) are concentrated in 12 countries with a total population of less than a billion people, that is, 15,4 percent of all mankind. This list of a dozen countries includes (in descending order by number of computers) the United States, Japan, England, Germany, France, Canada, Italy, Australia, Holland, Spain, Russia, and South Korea. If we exclude the United States, which has 31 percent of all personal computers in the world, in the rest of the world there are only 40 computers per thousand people. ... >>

The phone monitors the child 06.10.2003

The French cellular telephony company Alcatel has offered a new service to schoolchildren's parents. The mobile phone can monitor the child, informing parents if he deviates from the usual route home - school - home or for some reason lingers along the way. Every mobile phone announces its location from time to time so that the telephone network knows which base station to call. In the memory of the phone in the student's backpack, the base stations are entered, with which he usually contacts in those places where the child is allowed to be. When leaving this zone, parents receive an alarm message. Anxiety is also raised if the child is in some permitted place at the wrong time or for too long. However, not everyone likes the idea. They say that it is not worth teaching a person from early childhood to always carry a phone with him, that its radiation may be unsafe for a developing organism, and finally, that innovation does not contribute to ... >>

microbe restorer 04.10.2003

Acid rain and weathering gradually destroy the stone architecture of antiquity, especially buildings and monuments made of porous and relatively fragile carbonate rocks - limestone, marble and dolomite. As a result of chemical processes, less durable and more easily soluble calcium salts are obtained, the stone is gradually destroyed. Now Spanish scientists have found a strain of bacteria capable of "restoring" architectural monuments. The idea to populate the surface of the stone with microorganisms that take carbon dioxide from the air and replace unstable calcium salts with carbonate arose quite a long time ago and has been tested in practice. But it turned out that carbonate is deposited in the pores of the stone, clogs them and prevents the evaporation of rain moisture, only accelerating the destruction. Geologists from the University of Granada report positive results from testing the widespread soil bacterium Myxococcus xanthus on limestone samples from which many of Spain's historical monuments are made. ... >>

Garbage on the road 02.10.2003

Marking lines on the asphalt of the roadway are slippery both for tires and for the shoes of passers-by crossing the street, especially in wet weather. The French firm "Regain Eco-Plast" offered a non-slip paint "Nivernit" based on polymer resin, into which granules from plastic waste are mixed. Crushed and melted into granules plastic cases of computers, phones and other electronics thrown into a landfill are used. "Nivernit" is durable, easy to apply on asphalt and also cheaper than regular road paint by 30 percent. ... >>

The computer was taught to distinguish male text from female 01.10.2003

Israeli computer scientists from the University of Bar-Ilan have created a program that, with a high probability, determines the gender of its creator from the English text. 566 different English-language essays were entered into a computer equipped with this program, from fiction to dry scientific works, each time reporting who wrote it - a man or a woman. In total, the computer read over 20 million words. As a result, the machine found 128 linguistic features characteristic of the authors of both sexes. This is the frequency of use of certain words and the features of the construction of phrases. Women use words like "for", "with" and "and" more often than men. In addition, they prefer the present tense of verbs and use pronouns more often than men. Men are more likely to use numerals, the words "this", "such", "no" and the indefinite article. In general, in 80 percent of cases the program is not mistaken, but in fiction the result is even better. Out of 264 works of art proposed by Masha ... >>

Portable mobile phone printer 30.09.2003

The Japanese company Bandai announced the release of a portable printer that allows you to print pictures taken with camera-equipped mobile phones. The device is connected to a mobile phone via an infrared port, so no cables or flash cards are required to transfer and print photos. The body of the printer without batteries has a mass of about 200 g, the dimensions of the device are 108x70x30 mm. The printer prints pictures on special adhesive paper (69x38 mm), which is convenient not only because the picture can be immediately pasted into an album or hung on the wall. The device also allows you to print halves or quarters of the picture, so that later they can be glued together into one large "poster". ... >>

The lamp works without electricity 29.09.2003

American Environmental Products, a designer and manufacturer of lighting systems, has unveiled the Glow-Lux Emergency Afterglow Lighting, a lamp specifically designed for emergency lighting: during a power outage, it can work for a day. There is nothing unusual in the device of the lamp - it uses the phenomenon of phosphorescence. Only the high efficiency of the phosphors used in the lamp is surprising: it is enough to connect to the network for 15 minutes, so that then the lamp shines for 24 hours. This efficiency was achieved by selecting the components of the phosphors, which include strontium aluminate (non-radioactive isotope). Of course, the illumination created by the lamp is much lower than under normal conditions, but it is sufficient, for example, for reading. Other advantages of the lamp include an emission spectrum close to natural daylight. The military, as well as manufacturers of elevators and emergency lighting systems, became interested in the novelty. ... >>

Hewlett Packard e-book 27.09.2003

Hewlett Packard announced the creation of a prototype device, which, in fact, is an e-book. The device is no larger than a standard book and about 1 cm thick has a liquid crystal screen, along the perimeter of which there are touch panels. The device is connected to a regular personal computer via a USB port. After a short search and "download" procedure, the user is able to read the downloaded literature. The process of turning pages is as close as possible to the original: the reader simply swipes his finger on one of the touch panels, and the page visually "turns over". You can also select text fragments and enlarge them. Reading newspapers is carried out in a similar way. The main drawback of the device developers consider the screen of the e-book. Firstly, it, like any monitor, causes eye fatigue, and secondly, its dimensions are not very large yet. However, the rapid development of technology in the near future should ... >>

Sewing machine with computer 26.09.2003

The Japanese company Brother Industries has created a "sewing station" - a new model that does not correspond at all to traditional ideas about sewing machines. It is equipped with a mini-computer and can be connected to the Internet, fax and printer. With its help, you can tailor and sew any model taken from a fashion magazine illustration by filming it with a digital video camera or copying it with a scanner. The company's executives hope that the new model of the sewing machine will be in great demand, since the role of a person in its work is minimized. ... >>

Electronics will park the car 24.09.2003

Japanese engineers at Toyota have developed a computer system that allows a car to park itself in reverse between two objects. The system consists of a video camera installed at the rear of the vehicle and a computer program that analyzes the images and controls the vehicle. It will power the next generation of Prius hybrid gasoline-electric vehicles. Self-parking is another Japanese step towards creating an independent car that can do without a driver. According to the chief engineer of the Prius project, the existing system can already "keep" the car on the track, as it recognizes road markings. ... >>

Sports car turns into a speedboat 23.09.2003

Gibbs Technologies' Aquada Sports Amphibian, which can transform into a speedboat at the push of a button, has been tested on the Thames. The convertible, which develops speeds of up to 180 km / h on land, uses a water cannon in the floating version. Thanks to him, on the water it accelerates to a speed of 50 km / h. It takes only 10 seconds to hide the wheels in the body, turn on the engine and move through the water. To enter the water, the new car needs a slight gentle slope, although on the beach, for example, it can drive directly into the sea without additional devices. The hybrid, which is scheduled for serial production at the end of this year, is not cheap: the retail price will be approximately 150 euros. ... >>

Real-definition television developed in Japan 22.09.2003

Japanese scientists have presented a prototype of a video system that allows you to project an image with detail close to that perceived by the human eye. The presented system was called UHDV (Ultra High Definition Video). It delivers images up to 16 times the resolution supported by the most advanced broadcast video standards. The system's developer, Japanese Broadcasting Corporation NHK, announced that the vertical resolution of the UHDV system is 4000 lines. This is 4 times more than the HDTV standard and 6,5 times more than the NTSC standard. The prototype video system consists of two components. a video camera that allows you to capture video with the required high resolution, and a projection system based on four LCoS panels, two of which are responsible for processing green color and the other two for red and blue colors. As a result, the image formed by the system consists of 33 million points. ... >>

Increasing popularity of cell phones with cameras 20.09.2003

In the first half of this year, sales of mobile phones with built-in cameras surpassed sales of conventional digital cameras by a ratio of 25 million to 20 million, according to CNN. After all, mobile phones equipped with digital cameras and applications for them became one of the new technological trends of 2003. According to experts, sales of such phones for the whole year will reach 65 million units, or 13% of the total number of mobile phones. The leading position in this market segment is occupied by handsets of Japanese manufacturers - NEC and Panasonic. They are followed by a well-known Finnish manufacturer of mobile phones - Nokia. ... >>

CRT TV with built-in DVD recorder from PANASONIC 19.09.2003

In October, Matsushita Electric Industrial (Panasonic) launched a 21-inch CRT TV with a built-in DVD recorder. The cost of the TN-21DR1 will be approximately $1000. The TV has two analog tuners for recording two programs at the same time. Recording speed DVD-R/RAM - 4x. Recording on blank discs is possible in four quality modes. In addition to recording, the TH-21 DR1 is capable of playing DVD Video, Audio CD, Video CD and MPXNUMX files recorded on CD-R/RW discs. If there is nothing interesting on TV channels and nothing to watch and listen to, you can use the built-in AM / FM tuner. Two S-Video, two composite, one analog and one optical inputs are provided for connecting external devices. ... >>

SEAGATE hard drives in TOSHIBA video recorders 18.09.2003

Seagate Technology announced that Toshiba, the largest player in the consumer electronics market, has selected Seagate Consumer Electronics hard drives for its RD-XS31 HDD&DVD recorder. This is the industry's first DVD multi-drive video recorder. This Seagate hard drive will allow the RD-XS31 to record up to 104 hours of video. In addition, the HDD can be used as a buffer for later distillation of video to DVD-RAM, DVD-RW or DVD-R discs. ... >>

Freecom launches credit card-sized USB device 17.09.2003

The Dutch company Freecom has announced the development of a new USB storage technology. In terms of its dimensions (85,5 x 54 x 39 mm), the device is the same size as a credit card. The amount of information that can be written to a USB-Card is from 128 to 512 MB. In the future, it is planned to increase the capacity to 1 GB. The USB-Card will be connected to the computer using a special cable. In addition, the device itself is equipped with a special read/write sensor and works via USB 2.0 interface. The USB-Card will be available to the European user at the following prices: USB-Card 128 MB 99,9 euros - USB-Card 256 MB 179,9 euros USB-Card 512 MB - 379,9 euros USB-Card 1 GB is planned to be released in the second half 2003. Previously, Freecom has already tried to set a kind of record in the field of miniaturization of storage media. Her portable device USB 2 Stick with a very tiny size (with a regular key) can hold up to 512 MB. ... >>

Mobile phone printer 16.09.2003

Japanese electronics manufacturer Bandai Co Ltd recently introduced its version of a portable printer for printing semi-valuable images on mobile phones with built-in cameras. Data transfer is done via infrared port, the printout is on a sheet of paper with a sticky side so the photo can be used as a sticker. ... >>

Talk to the washing machine 14.09.2003

A group of developers from the University of the German city of Regensburg has created a washing machine, the instructions of which must be given by voice. For example, load laundry and, turning to the machine, say: "I want to wash colored laundry." The machine, after a moment's thought, replies: "Colored laundry, wash at 50 degrees, gentle spin at 600 rpm. Start now?" - "No, in half an hour." Machine: "Then the laundry will be ready at ten-thirty." In addition, the machine answers questions about how to remove stains of various origins from clothes. For example: "How do I remove chewing gum from my jeans?" Answer: "Freeze jeans in the refrigerator and carefully rip out the gum with a knife!" A production machine from Siemens has been re-equipped for a speaker. A factory release is not yet planned, but rather a way to effectively demonstrate the capabilities of a new program for dialogue with artificial intelligence. ... >>

poison against poison 13.09.2003

Two well-known toxic substances - benzopyrene and tributyltin - can serve as an antidote to one another. This conclusion was made by biologists from the Institute for the Study of the Sea at the University of Quebec (Canada). Benzopyrene, found in tobacco smoke, for example, is a powerful carcinogen. More precisely, in the body it turns into such under the action of one of the enzymes. Tributyltin is an organic tin compound that is poisonous to marine animals, and especially to their larvae. This substance is added to the paint for the underwater part of the hull of ships so that they are not overgrown with mollusks, worms and corals. It turned out that tributyltin inhibits the activity of the very enzyme that turns benzopyrene into a carcinogen. In turn, benzopyrene reduces the toxicity of tributyltin. This was found in experiments with fish, in aquariums to which one of the substances or both were added at once. The discovery may have practical implications for medicine. ... >>

Airplanes are thrown here 11.09.2003

In Capua (Italy), the world's only facility for simulating aircraft crashes has been created. From a steel portal 37 meters high and 41 meters wide, helicopters and aircraft weighing up to 20 tons are dropped onto soft ground, onto concrete or into water, testing the strength of the fuselages. In the future, a pool of water is going to be equipped with an installation that will create waves up to a meter high. This will simulate splashdown in stormy weather. Inside the experimental objects are sensors and mannequins depicting the crew and passengers. The process is filmed from inside and outside by high-speed cameras. ... >>

Lighting from a balloon 10.09.2003

The German company "Powermoon" has offered balloons-lamps for lighting construction sites, road works, sports fields, disaster sites, filming, folk festivals. An inflatable balloon of the type used in meteorology contains a powerful lamp inside. The upper half of the ball is covered from the inside with a sputtered layer of aluminum that reflects light downwards, the lower half is matte and scatters light. The shell of the balloon, together with a helium balloon, fits freely in the trunk of a car and inflates in ten minutes. The ball rises to a height of up to 50 meters on a cable that serves both to supply energy and to hold the lamp in place. In strong winds, an additional steel cable can be used. Four such lighting fixtures are enough to brightly illuminate the football field, like during the day. ... >>

Supercomputer from store shelves 09.09.2003

Computer store shelves are lined with computers that are turned on, displaying moving screensavers, games, or movies on their monitors. The American firm Gateway, which manufactures computers and has a network of stores throughout the country, thought: since the products still work to attract customers, can they be harnessed to some useful business? By connecting about eight thousand state-of-the-art personal computers in its 270 stores via the Internet, the company received a supercomputer that performs 14 trillion operations per second. Computing power is sold to everyone. So, one of the pharmaceutical companies calculates the shape of the molecule of new drugs in stores. ... >>

LED operation 07.09.2003

The Italian company "Rimsa" starts production of shadowless LED lamps for operating rooms. Instead of conventional halogen lamps, five bright white LEDs are used, which create an illumination of 50 lux on the operating field a meter away from the lamp (an ordinary 100-watt light bulb gives 25 lux at a distance of a meter, however, mirrors and lenses can increase this value tenfold). Energy consumption compared to incandescent lamps is three times less, the service life is 50 times longer and reaches XNUMX thousand hours. The LEDs emit no UV or IR light and generate little to no heat, so surgeons do not suffer from heat and the operating field does not dry out. ... >>

Tape without glue 06.09.2003

The University of Manchester (England) created adhesive tape without glue. True, so far only a small piece of one square centimeter has been obtained. The developers took advantage of the recently revealed secret of the gecko. This small lizard runs briskly along vertical surfaces, including glass. It was recently discovered that the legs of the gecko are covered with the finest hairs, which, in contact with any surface, are attracted to it simply due to intermolecular forces. Each hair provides only a very slight attraction, but there are many billions of such hairs. By shifting the sole so that the hairs form an acute angle with the surface, the gecko disengages the foot from the surface. Using nanotechnology methods, the researchers were able to apply hairs 2 microns long and 0,2 microns thick to a flexible polymer film, just like a natural sample. There are about a hundred million of them per square centimeter. It is estimated that if you make a glove with such a coating, a person can on one hand wearing such a glove ... >>

ice cream headache 05.09.2003

Eating ice cream too fast can cause a headache. In experiments conducted in Canada, 145 schoolchildren took part with great enthusiasm. They were divided into two groups and each was given a 20 gram scoop of ice cream. One group was given five seconds to swallow a portion, the other could enjoy the treat for as long as half a minute. After that, in the group of fast eaters, 9 complained of a headache, and among the slow eaters only 10. True, the head hurt for no longer than XNUMX seconds. Apparently, from rapid cooling, the vessels supplying the brain with blood narrow. ... >>

Phone for Chinese 04.09.2003

The Beijing-based design bureau of the Finnish firm Nokia has developed a cell phone model specifically for China. "Nokia 6108" allows you to send short text messages in Chinese, writing out hieroglyphs with a pointed stick - stylus directly on the screen of the device. When the stylus is not needed, it is hidden in a special holder on the back of the device. The developers say that this idea was suggested to them by the warriors of the "clay army" - ancient statues of soldiers found 30 years ago in southeast China. These soldiers have swords attached to their backs. In a month, Chinese mobile telephony subscribers (and there are now more than 220 million of them, that is, every sixth Chinese has a phone) send about 20 million such messages, and until now, on older models, they had to painstakingly type Chinese words in Latin letters. Other specific features of the new model are a built-in Chinese-English dictionary that works in both directions, as well as a Chinese lunar calendar. ... >>

Rocket on candles 02.09.2003

Where is paraffin used? First of all - in the production of candles. However, in one of the research centers of the American space department NASA, they are testing a rocket engine on paraffin. This is the so-called hybrid fuel, in contrast to solid (gunpowder) and liquid (for example, kerosene with liquid oxygen). Liquid oxygen is supplied under high pressure to the surface of a thick "candle" filled into the combustion chamber. It turned out that paraffin burns three times faster than hybrid fuels known so far. In addition, it is completely non-toxic, environmentally safe, does not explode. The first candle-powered rockets are expected to take off in five years. ... >>

evaporating planet 01.09.2003

French and Swiss astronomers have discovered in the constellation Pegasus, 137 light years from Earth, a planet that is evaporating before our eyes. The planet, which first received the index HD209458b and then the name Osiris in honor of the ancient Egyptian deity, is located very close to the central star of its system, only seven million kilometers from it. For comparison: the Earth is 150 million kilometers from the Sun, and Mercury, our hottest planet, is 58 million. The atmosphere of Osiris consists mainly of hydrogen, it is heated by the star to about 1900 degrees Celsius, and hydrogen evaporates at a rate of at least 10 thousand tons per second. But, since the planet is very large, slightly smaller than Jupiter, by the end of the existence of the star evaporating it, it will lose only 0,1 percent of its mass. ... >>

Robot vacuum cleaner for an apartment 29.08.2003

Experts from the Japanese company Hitachi have invented a vacuum cleaner that can clean the apartment on its own in a matter of minutes and return to its usual place for recharging. The dust-absorbing robot looks like a plate with a diameter of 25 cm and a height of 12 cm. It is the smallest household appliance of its kind. The "smart" machine remembers the location of furniture and other items in the room and enters these bottom ones into its on-board computer so as not to bump into them next time. In addition, the robot knows which areas of the floor it has already cleaned, and does not waste time re-passing them. It takes only 9 minutes for a vacuum cleaner to clean a room of 2 m10 from dust. The serial model of the device costs about 1700 dollars. ... >>

Mobile phone SAMSUNG SCH-X820 27.08.2003

Samsung Electronics introduced the SCH-X820 mobile phone with built-in color TV in Korea. SCH-X820 has a built-in TV tuner, and the antenna simultaneously receives both TV and telephone signals. The mobile phone can automatically select TV channels with the best reception, and the internal TFT-LCD display with 262000 colors can be adjusted for horizontal or vertical viewing. There is also an external, telephone, 256-color display. ... >>

Smart Air Seats 26.08.2003

The British company Qinetiq has developed special aircraft seats equipped with sensors that collect information about the behavior of passengers and transmit it to a central computer. "Smart seats" will inform the crew of the aircraft about the presence of nervous passengers or potential terrorists on board: the developers propose to install a special display on board in a place accessible only to the crew, which will give an alarm if the behavior of one or more passengers deviates from the norm. After that, crew members will be able to personally assess the situation and understand whether there is a need for intervention. ... >>

Diving breathing tube 25.08.2003

Aqua Sphere has created a diving breathing tube called Aqua FM. The radio receiver and two AAA batteries are built into the mouthpiece of the breathing tube, which the user of the device, while under water, tightly compresses his lips. The novelty does not need headphones: the sounds reach the diver's inner ear directly through the bones of his jaw and skull. The volume can be adjusted by clenching your teeth tighter to the sounds of your favorite music. Pressing the "Tuning" button once will automatically tune the radio to the nearest radio station. Under development is the Aqua FM Pro receiver, designed for more serious use: it is designed to transmit commands to swimmers and use during search and rescue operations. ... >>

Self-propelled pants 23.08.2003

At the Japanese University of Tsukubo (province of Iboroki), self-propelled pants have been invented that relieve a person from fatigue while walking by automatically rearranging his legs. The device consists of a pore of flat "legs" fixed along the limbs of a person, and a control unit packed in a backpack. The total mass of these additional devices is 17 kg, however, a person practically does not feel their heaviness due to the fact that he does not waste energy on steps. The built-in microprocessor, using special sensors, captures the brain signals sent to make movements, and transmits them to artificial "legs". The invention is intended primarily for infirm people and patients who are recovering from injuries. It can also be used to work in a disaster area and during sports training. ... >>

DVD and HDD in one case 21.08.2003

Pioneer intends to launch four new models of DVD video recorders with built-in hard drives on the market at once. All models will be available for sale in October (DVR-510H-S and DVR-515H-S) and November (DVR-710H-S and DVR-610H-S) this year. The sizes of hard drives installed in the devices will be 160, 120 and 80 GB, depending on the model. This is enough to store 200, 1 and 50 hours of video respectively. Any movie can be recorded from HDD to DVD-R or DVD-RW. All devices are very similar in their specifications and differ, in essence, only in the size of the hard drive. The consumer is offered all the basic functions, the presence of which is mandatory for every video recorder, plus everything, each device is equipped with a number of additional features. So, for example, proprietary technology Full Time-shift allows you to record to a hard drive simultaneously with recording a copy of the movie on DVD. Naturally, as is now accepted, the recording can be started ... >>

You can go to jail for watching a pirated DVD movie in Germany 20.08.2003

Since the end of last week, a new law has come into effect in Germany to protect copyright holders on the Internet. From now on, the owners of sites that contain copyrighted works can be punished. "The new law," German Justice Minister Brigitte Zurpies told the DPA news agency, "does not distinguish between who and for what purposes is involved in the illegal distribution of licensed products - a legal entity or a private person, whether there is profit from this activity or not. Now even the private viewing of an illegally copied film in the family circle can be considered illegal. ... >>

HP DVD MOVIE WRITER DC3000 converts VHS recordings to DVD format 19.08.2003

Gradually, in more and more homes, the shelves of videocassettes are covered with dust. The new device from Hewlett-Packard makes it possible to transfer records from analog VHS video cassettes to the now popular digital DVD format. The DVD Movie Writer dc3000 was featured in the company's 100 custom products to market for the start of the new consumer season. The cost of the new product is $399, it will go on sale in mid-September. The device combines features previously distributed across different products - a DVD burner, a video card with the ability to capture video, the corresponding software. As a result of the USB connection, the device allows you to transfer video data in VHS, Hi8, Digital 8 or MiniDV formats to DVD digital format. Ryan Jones, a senior research analyst at the Yankee Group, argues that amid the general increase in the "digitization" of society, the new product from Hewlett-Packard is the most ... >>

Voting in the animal world 18.08.2003

Since the thirties of the last century, when dominant and subordinate individuals were discovered among animals, the idea of ​​\u26b\u62bstrict hierarchy and even dictatorship in animal communities has been established. However, new data suggests that there is democracy in the animal world. This system is better than submission to the sole decision of the leader, if only because the members of the community are more willing to implement the joint decision of the majority. Animal behaviorists from the University of Sussex (UK) found that their wards even use voting. Opinion on controversial issues is expressed in different ways. Gorillas grunt, chimpanzees squeal. When a flock of swans is about to take to the air, the birds begin to stretch their necks and nod their heads. As soon as the frequency of such movements in most birds reaches XNUMX per minute, the flock rises to the wing. A herd of red deer lying on the grass moves to another place when XNUMX percent of the adults get to their feet. The right to vote is granted ... >>

Windmills of the XNUMXst century 17.08.2003

In Germany, serial production of high-power wind power generators has been launched. The Enercon E-66 model has a three-blade rotor with a diameter of 66 meters, its power is 1,8 megawatts. In the fall of 2002, a prototype of an even more powerful installation, the E-112, was mounted near Magdeburg, the serial production of which is planned after testing, if they are successful. Each rotor blade of this wind turbine is 52 meters long and weighs about 20 tons. The gondola weighing 500 tons is mounted on a tower 120 meters high - higher than many TV towers. The power of the E-112 is 4,5 megawatts. A total of 2002 wind turbines with a total capacity of over 13 megawatts were operating in Germany at the end of 759. The country ranks first in the world in the use of wind energy. ... >>

Rains come from outer space 15.08.2003

According to researchers from the Institute of Nuclear Physics in Heidelberg (Germany), elementary particles of cosmic rays are involved in the formation of clouds. Clouds, as you know, consist of water droplets (at low temperatures - from ice crystals). In order for droplets to condense from water vapor, crystallization centers are needed. They are small dust particles, crystals of sea salt, particles of soot and smoke, and at high altitudes (about 50 kilometers), water can condense around relatively large clusters of ions. These groups of ions, about 30 nanometers in size, as shown by German physicists, arise from gaseous sulfur oxides under the action of the ionizing energy of cosmic rays. Sulfur dioxide enters the atmosphere from volcanoes, from forest fires and, of course, from fuel burned by humans. Water molecules are attracted to accumulations of ions, resulting in a microdrop of sulfuric acid, which, as you know, is highly hygroscopic (earlier in the winter between window frames with ... >>

The liver was taken out, repaired, inserted back 14.08.2003

This is a common procedure in the repair of various machines and devices. But it was first performed by Italian doctors on a human liver, and it was performed successfully. In December 2001, surgeons at the Hospital of St. Matthew in Pavia removed a liver from a patient with a malignant tumor, having previously injected a compound of the amino acid phenylalanine with boron into it. This amino acid is taken up by fast-growing cancer cells six times more than healthy cells, and boron is also taken up at the same time. The extracted liver was washed and taken to the Institute of Nuclear Physics, where it was irradiated for 11 minutes with an intense neuron flux from a nuclear reactor, then taken back to the operating table and returned to the patient. In total, the organ was absent in its place for 35 minutes. After two or three hours, the boron deposited in cancer cells began to emit neutrons, the "charge" of which he received in the reactor. Ten days later, all foci of the disease were destroyed. Now, a year and a half after the operation, the patient feels great. Kom ... >>

Weave networks from nanotubes 13.08.2003

Physicist Ji Liu from Duke University (USA) has found a way to produce unusually long carbon nanotubes - up to four millimeters. They are usually made by reacting hydrogen with carbon monoxide (carbon monoxide) on the surface of a catalyst that is slowly heated from room temperature to 900 degrees Celsius. It turns out a tangled mass of nanotubes up to 20 micrometers long. Liu suggested blowing the reacting gases over an already heated catalyst. The result was long tubes, stretched parallel in the direction of the flow of gases, like grass under the wind. Then the experimenter cooled the plate with the catalyst and tubes, turned it 90 degrees, put it back into the oven and let the gases go. The result was a second layer of nanotubules running perpendicular to the first one. A network has formed. Based on it, the researchers propose to create subminiature electronic circuits. ... >>

Electronic secretary 11.08.2003

A computer system that itself determines whether a subscriber can answer a phone call is offered by engineers from Carnegie Mellon University in Pennsylvania (USA). The system, installed at the subscriber's workplace or in his living room, consists of microphones, video cameras and motion sensors connected to a computer. When a phone call comes in, the computer estimates the position. How many people are in the room, whether its owner is talking or silent, whether he is working on a computer or just sitting, whether he is walking around the room or waving his arms violently, the door is open or closed. And, having compared all this information, the electronic secretary decides whether to invite the subscriber to the phone or answer the caller "sorry, he is very busy, call back later." However, at first the computer needs training: the owner himself in several different situations must decide whether to pick up the phone. And then the computer starts to decide for him, and, they say, does it better than an experienced secretary. ... >>

Hydrogen scooter 10.08.2003

A newly formed German firm, Akvon-Motors, has developed a prototype scooter that uses hydrogen as fuel for its two-stroke engine. Refueling with compressed hydrogen lasts four minutes, the fuel supply is enough for about 100 kilometers. Exhaust gases are made up of pure water vapour. By the way, the first internal combustion engine ran on a mixture of hydrogen and air. Swiss Francois-Isaac de Rivaz received in 1807 a patent for a self-propelled carriage with a hydrogen engine. ... >>

Octopus color 09.08.2003

The octopus changes its color by shrinking or expanding the pigment cells scattered in the skin. A material with such properties was obtained by Japanese chemists from the Fuji-Xerox company. They made microscopic capsules with a diameter of 20 - 200 microns from a transparent nipam polymer that changes its size depending on temperature, filled these bubbles with paint and mixed them with a transparent gel. At room temperature, nipam capsules are expanded and the material is opaque, colored in the color of the pigment enclosed in nipam. When heated to 40 degrees Celsius, the polymer shrinks more than ten times, and the material becomes almost transparent. By enclosing the gel with capsules between two glasses, a window with variable transparency can be obtained. It is also possible to develop a computer display on this basis. ... >>

An old petrel flies 07.08.2003

The Lesser Petrel, accidentally caught on an island off the coast of Wales (UK), turned out to be the oldest representative of this species. A ring on the bird's leg indicates that it was first caught in May 1957, when the bird was between 4 and 6 years old. So now the petrel is about 52 years old. Until now, the American albatross was considered the record longest-lived seabird - 50 years (age is also determined by the ring). Since the small petrel flies to winter in South America, and in search of food it can fly 900 kilometers into the ocean, it is assumed that the long-liver managed to fly 9 million kilometers in his life. Bird ringing for scientific purposes was first used in Denmark in 1899, but this method has spread more or less widely only since the late 40s of the last century. Therefore, ornithologists expect that finding the oldest birds of one species or another older than half a century may soon become fairly commonplace. Of birds living in captivity, whose age is known exactly, ... >>

Bottle furniture 06.08.2003

Richard Liddle of the University of Newcastle, England, has developed a way to turn discarded plastic bottles into durable material for modern furniture. Recycled plastic is opaque, can be dyed any color, and can be molded, stamped, or extruded into any shape. Liddle founded his own company and intends to start making office furniture out of bottles - tables and chairs. If the novelties go well, production will expand. ... >>

Tigers and infrasound 05.08.2003

Zoologists from the Omaha Zoo (USA), having studied the vocal capabilities and hearing of different types of tiger, came to the conclusion that huge cats widely use infrasonic frequencies. Low frequency sound is better distributed and heard from a distance. In the roar of the Amur tiger, the main energy falls on low sounds with a frequency of about 300 hertz with components lying in the infrasound region below 20 hertz. These frequencies pass better through the dense undergrowth that is common in tiger habitats. The researchers even measured the response of the tiger's brain to sounds of different frequencies by inserting electrodes into the brains of sedated Amur, Sumatran and Bengal tigers. It turned out that the hearing of the tiger is most sensitive to sounds with a frequency of about 500 hertz (in humans - about 1000 hertz). The tiger uses low frequency sounds to drive competitors away from its hunting ground and to attract mates. ... >>

Radio signal from an artery 03.08.2003

Employees of the Higher Technical School in Aachen (Germany) have created a microscopic probe that can constantly measure the pressure and temperature of blood in human vessels. A miniature capsule with a diameter of two millimeters, made of silicon, is inserted into the vessel through a puncture using a flexible probe and brought under x-ray control to the place where the artery bifurcates. After removing the probe from the vessel, three spring legs move away from the capsule in different directions, holding it in place. The microcircuit, located in the capsule, begins to transmit data on temperature and pressure by radio. The signal picks up the device, which is in the pocket or on the belt of the patient. The same device feeds the microsensors by inductive energy transfer. Interesting results of constant pressure measurement have been obtained: it turns out that the mere sight of a person in a white coat causes many people to have a rise in pressure by 20 millimeters. The creators of the device believe that it will be widely used in medicine in two years, when it will be established. ... >>

Tanker on a leash at the kite 02.08.2003

Hamburg businessman Stefan Wrage proposes to use a kite for navigation. A hundred years ago, in 1903, a French athlete crossed the English Channel in a boat pulled by a kite, and these days the kite can be high-tech. The enemy intends to make an inflatable kite the size of a football field, filled with helium. At an altitude of 500 meters, with a suitable wind, it will develop a thrust of up to 30 tons, which will make it possible to pull a tanker, container ship or liner on a strong synthetic rope. The kite will be controlled by a computer. Such a kite will cost about one million euros, but due to fuel savings, it will save up to 14 thousand euros daily. The system should be ready by 2005. ... >>

Stop sign at the back of the head 01.08.2003

On many cars, additional brake lights are now installed at the top of the rear window. Red lights in this position are more visible from afar, and statistics show that such cars are less likely to be “entered” from behind. Inventor John Cromarty from Bristol (England) proposes to provide motorcyclists with such a signal by placing a matrix of several hundred red LEDs on the back of the head of a safety helmet. ... >>

Glasses will always be clean 31.07.2003

Japanese engineers from the Tokyo Industrial University have learned how to make glasses that never fog up and practically do not get dirty. After a complex process of treatment with carbon dioxide, an ultra-thin (several microns) film of fluorine molecules forms on plastic lenses. It serves as a durable protection against drops of moisture and all kinds of pollution, including fingerprints. According to experts, such lenses will not fog up even in the bath. The developers, however, admit that, at least at the first stage of commercial implementation, glasses with such lenses will be significantly more expensive than usual ones. ... >>

Wine bottle with TV screen 30.07.2003

British students from the Saint Martins College of Art and Design have created a prototype wine bottle with a miniature TV screen to celebrate the 150th anniversary of Hardys Wines. The company asked students M. Lindqvist and B. Golding to design a bottle of the future, i.e. the way it will be in 150 years. A self-cooling animated bottle shows on the display all the information about the wine inside it: a short film shows where the grapes were grown, how the wine was bottled, gives exhaustive information about the taste, and more. There is also a device for temperature control built into the neck. ... >>

Iron irons vertically 28.07.2003

In the UK, an iron has been created that can be used to iron clothes hanging vertically in the wardrobe. The built-in fan sucks fabric to an iron soleplate. Vacuum pressure improves the quality of ironing when using a new iron and in the usual way, on an ironing board. ... >>

Natural fuel microgenerator 27.07.2003

British scientists from the University of Birmingham managed to create a microgenerator that runs on natural fuel, the size of which does not exceed 1 cm. According to the developers of the new device, they hope that the novelty will make a technological revolution and will be able to force out the usual batteries from the market within 6 years . In fact, the new power source is capable of running continuously for two years using just a few milliliters of liquefied gas for lighters as fuel, and producing 700 times more energy than a conventional battery. ... >>

SONY camcorders burn DVD on the fly 24.07.2003

Sony announced the imminent start of deliveries to the European market of the previously announced Handycam DCR-0V0100 and DCR-0V0200 digital cameras, featuring the ability to record footage on an 8 cm DVD. Digital cameras are equipped with built-in video editing features. The new cameras are compatible with standard 1,4GB DVD-R and DVD-RW drives for up to 60 minutes of continuous shooting. As for the technical characteristics of the new products, the DCR-DVD200 is based on a megapixel CCD sensor, while its younger sister, the DCR-DVD100, is equipped with an 800000-pixel matrix. Both cameras work with both high-quality video and still JPEG images and are equipped with Vario-Sonnar optics with 10x zoom from the recognized leader in this field, Carl Zeiss, 120x digital zoom and 2,5" LCD display • Connect to PC using Hi-Speed ​​USB port. ... >>

New series CKR relay Crydom 20.07.2003

Contd Over Paver, Crydom announced the development of a new series of CKR solid state relays with a switching voltage of 240 and 480 V rms and a current load of 10 20 and 30 A rms. Relays can have both AC control (CKRA subfamily) and DC control (CKRD subfamily). Models are available with zero-crossing switching as well as with arbitrary switching. The CKR series relays are supplied with a built-in heatsink with a snap-on design for direct DIN rail mounting. Despite the fact that the width of the relay housing is only 22 5 mm, the heatsink ensures efficient heat dissipation. The relay contacts are made for panel mounting with a wire hole (d = 3 mm). The working state of the relay is displayed by a green LED on its body. The input voltage of the relay with DC control is 4, 5, 32 V for the relay with AC control - 90 280 V. The maximum allowable voltage is 4000 V rms. ... >>

New 14A voltage conversion modules in EXCALIBUR package 19.07.2003

Texas Instruments new series of voltage converters in EXCALIBUR 12-pin package is only 8 mm high. The input voltage is 5 V, the output current is up to 14 A and is designed to organize a power supply for powerful micro- and signal processors right at their installation site. Half the size of the previous series of 6460A voltage converters, the PT14 power modules operate from a 5V system power supply and provide a reduced regulated voltage down to 1V. Other product features include 94% efficiency, pre-bias voltage for reliable start-up, adjustable output voltage, line length compensation, on/off delay, overcurrent protection and a convenient surface mount package design. The PT6460 modules are available in a low-profile 12-pin EXCALIBUR copper package, do not need an additional heatsink and are easy to solder. With dimensions 43x17x8 mm, box ... >>

glass medicine 18.07.2003

British dentists have developed a new way to prevent caries. On one of the molars at the back, so as not to interfere, the doctor glues a two-millimeter grain of glass of a special composition that can dissolve very slowly in saliva. Fluorine ions are introduced into the glass. Gradually released, they protect tooth enamel from caries. A side effect of this remedy was also revealed: it eliminates the sensitivity of the teeth to too cold or too hot food, which is characteristic of many. The glass "bead" should be replaced every two years. Soluble glass will find application in animal husbandry. A glass tablet with trace elements necessary for the animal, such as copper or cobalt, is allowed to be swallowed by a cow. The tablet enters one of the sections of the complex stomach and, gradually dissolving, releases the necessary trace elements. ... >>

Hive for wild bees 16.07.2003

The English company "Oxford Bee" has launched the production of ready-made houses for wild bees. In recent years, honey bees in England, and in many other countries, have suffered greatly from parasitic mites. As a result, yields of crops that need pollination by bees have decreased. In this regard, honey bees can be replaced by solitary wild bees - osmia. They do not give in to a tick and, moreover, are more effective in pollination. Osmias collect pollen on the pubescent underside of the abdomen, rather than tamping it into special baskets on their legs, like a honey bee, therefore increasing the likelihood of pollen getting onto the pistil. Importantly, osmias are distinguished by a complaisant disposition and almost never use their sting. In spring, they begin to fly earlier than ordinary bees, at a lower temperature. In nature, osmia live in hollow reed stems, empty snail shells, in the passages of woodworms and other tubular cavities. Oxford Bee proposes to attract osmium to the gardens by hanging houses for them. ... >>

Hybrid trash can with slot machine 15.07.2003

How to get the main consumers of non-alcoholic and low-alcohol drinks in cans - young people to throw empty cans only in the trash? Two graduate students from the University of Lyon (France) came up with a fruitful idea and managed to implement it. Six cabinets resembling drinks vending machines appeared on campus. There is no slot for coins in them, but there is a round hole where you can push an empty jar. As soon as this is done, in the front wall of the cabinet, behind the glass, three reels with drawings begin to spin, like in a slot machine. If all three reels land on the same symbols, you get a win for an empty jar. It can be a lollipop, a keychain, a pack of chewing gum, a ballpoint pen, and if you are especially lucky, a leather case for a mobile phone. On average, every fourth jar brings a win. The innovation aroused the enthusiasm of the inhabitants of the campus, and each machine began to be handed over to metal assemblers. ... >>

Elephants on a treadmill 14.07.2003

Can elephants run, or do they simply walk at a fast pace if necessary? A group of Thai biologists studied the issue by running 42 Asian elephants on a treadmill. A total of 188 races were held under the lens of television cameras. To make it possible to analyze the movements of the legs of thick-skinned giants on video frames, the joints were marked on the elephant skin with spots of white paint. The speed was recorded with a photo finish. It turned out that elephants use something between fast walking and running. The order and mode of movement of the legs does not change, and there are no moments when all four legs leave the ground, as in typical running of other animals. On the other hand, when the elephant moves to a fast pace, the body's center of gravity begins to jump up and down, which is typical for running (when walking, the elephant's center of gravity shifts back and forth). Many of the experimental animals reached speeds of 25 kilometers per hour, and three particularly nimble individuals exceeded it. This is the first time such velocities have been recorded. ... >>

Look into the eyes of the phone 11.07.2003

It is about the appearance of machines that will understand human facial expressions and be controlled by it. When the phone rings at the Human Communications Lab at Kingston University, Canada, the plush animal on the table next to the machine blinks and rolls its eyes. If the person sitting at the table breaks away from work and looks the little animal in the eyes, it will turn on the telephone, if not, the answering machine will work. There are already cameras that focus on exactly the subject that the photographer is looking at. Canadian engineers propose to build similar systems into computers, mobile phones, voice recorders and other devices with which a person interacts. The laboratory has created a table lamp that performs the verbal commands "Light up!" and "Extinguish!" only when the owner looks at her. That is, these words can be fearlessly used in a conversation, if it is not about a lamp. ... >>

Squid from the Ross Sea 10.07.2003

New Zealand fishermen caught a female giant squid Mesonychoteuthis hamiltoni on the surface of the Ross Sea off the coast of Antarctica. The length of the still not quite adult mollusk is 5 meters, weight - 150 kilograms. This is only the second whole specimen of this species that scientists came across (there were also finds of individual fragments in the stomachs of whales that feed on squid). The species lives at depths of up to two kilometers; it is an aggressive predator that can be dangerous for humans as well. The tentacles of the squid are studded with hooks as sharp as knives, the mouth is equipped with a powerful beak that tears the victim to shreds. Until now, it was not known that a giant squid can hunt near the surface of the water, where it is able to meet a person (although it is unlikely that many of us would think of swimming off the coast of Antarctica). The mollusk was caught in the net when chasing a two-meter fish. ... >>

Warm up with your breath 09.07.2003

Warm jackets with a thick layer of thermal insulation are often called "puffy", but in fact they do not have air chambers. For inconstant weather, the American company Gore-Tex offered a truly inflatable vest with an adjustable degree of thermal insulation. In its thickness are interconnected air chambers, which the wearer of the vest can inflate through a nipple hidden in the collar. For full inflation, 4-5 liters of air are required, which is why the vest thickens by one and a half centimeters. It became hot - the air can be partially or completely deflated. ... >>

Wood can cause allergies 07.07.2003

Experts from the Institute for Wood Research in Braunschweig (Germany) found that walls, parquet and furniture made from natural softwood can cause allergies in residents. Softwood releases resin components into the air - terpenes, pinenes, limonene and other aromatic compounds. And when the natural resins in the felled tree begin to decompose, aldehydes and organic acids also enter the air. Scientists analyzed the composition of the air in houses and apartments with the widespread use of coniferous wood and came to the conclusion that in recent years, in the pursuit of environmental friendliness of housing, builders and finishers have gone too far. The fact that spruces and pines emit organic molecules into the air can be seen on a walk through a coniferous forest. The smell is pleasant, but it is difficult for many to constantly live under its influence: cough, sore throat, irritation of the nasopharynx and other allergy symptoms begin. Scientists recommend coating furniture, parquet and wood wall panels with a colorless ... >>

grass paper 06.07.2003

The Polish company "Biotek" has patented a method for obtaining pulp for making paper from a herbaceous plant, a relative of mallow, cotton and hibiscus. The American sida grows literally like grass, growing biomass ten times faster than conifers commonly used in paper making. The content of cellulose in the stems of sida is 40 percent, about the same as in pine or birch wood. There is no resin in the plant, there is much less lignin in it than in coniferous wood, it is not necessary to remove the bark from its stems - all this reduces the cost of production. The paper is no less durable than regular paper. ... >>

Diamond is harder than diamond 05.07.2003

Japanese scientists have synthesized artificial diamonds that are harder than real ones. Physicists heated up to 2500 degrees Celsius especially pure graphite under a pressure of 100 thousand atmospheres. These are higher parameters than in conventional diamond synthesis. The result was crystals with a diameter of several tenths of a millimeter. They, in turn, consist of tightly soldered even smaller crystals, while natural diamonds, as a rule, are single solid crystals. Their hardness is different under pressure on the diamond from different directions, and in new artificial diamonds it is the same, no matter how hard you press. And higher than that of natural diamonds. ... >>

Soil water 03.07.2003

The German company "Zeltek" proposed a device, ingenious in its simplicity, for evaporating pure water from the soil. This is a large cone made of transparent polymer, without a bottom, but with an annular groove along the perimeter of the base (the edge of the base is bent inward). The cone is placed on the ground, and the rays of the sun drive water out of the ground. Water, evaporating under the cone, as in a greenhouse, settles on the walls and flows into the receiving groove. In a day, even in the desert, you can get up to one and a half liters of the purest water - although the sand of the desert is drier than ordinary soil, but the sun is hotter there. You can put the cone in a dirty puddle, or even in calm weather let it swim near the shore in shallow sea water - and get clean distilled water. The invention was awarded the prize of the World Forum on Drinking Water Problems, held in the spring in Tokyo. ... >>

Phone in hours 02.07.2003

The Japanese firm "Dokomo" has begun production of a cell phone worn on the wrist like a watch. To make a call, you need to remove the device from your hand and attach one end of the bracelet to your ear, and speak in the other. The phone weighs 113 grams, its owner is able to use e-mail in addition to making conversations, as well as browsing Internet sites specially simplified for the phone. The battery charge allows you to talk without interruption for two hours, and in the call standby mode, the energy is enough for 200 hours. Of course, the device also acts as a conventional electronic clock. The new phone will be sold only in Japan, as it is designed for the Japanese cellular standard, which is not used in other countries. A similar novelty is being prepared by Samsung. ... >>

Bluetooth digital pen 30.06.2003

Nokia has developed a digital pen that allows you to write or draw something, and then send it to a cell phone using Bluetooth technology and send it as a multimedia message. The Nokia Digital Pen SU-1B is used to write on a special notepad made of plain paper, on which control characters are applied. The images are saved in the usual GIF format and can be inserted into multimedia messages supported by phones such as the Nokia 7650 and 3650. The pen is connected to a PC via a USB cradle so that a note can also be saved to a computer. The memory of the pen itself can hold up to 100 A5 pages. To convert an image to text, you need to purchase a special text recognition program. ... >>

Mobile phone recognizes the owner 29.06.2003

The Japanese company Earth Beat, which specializes in image recognition technologies, has released GeneLock-Light, an embedded special software for authenticating users of mobile phones equipped with digital cameras. The company's employees claim that their technology provides a high level of security and can be an attractive alternative, especially for the younger generation, to the methods of identifying a person by a four-digit PIN code, retina or fingerprint. They believe that an important advantage of the Earth Beat solution is that it can be used in those phones with an integrated camera that are already being mass-produced at the present time. ... >>

Boots with spring studs 27.06.2003

Generics Group engineers have created a fundamentally new boots - with spring spikes. In them, plastic spikes are attached to a compressed steel springy plate. Any force acting on the cleat causes the spring plate to collapse, absorbing the energy and reducing the pressure on the foot at that point. At the same time, the ends of this plate are bent down, bringing the secondary spikes into contact with the ground. This gives extra grip and distributes the load. The whole mechanism is enclosed in a durable plastic that prevents the accumulation of dirt inside. Since spring boots significantly reduce the risk of injury to athletes compared to conventional sports shoes, the creators of the novelty are confident that their offspring will be in great demand. ... >>

Antibacterial clothing 26.06.2003

R. Engel and colleagues from New York University have made significant progress in research on the creation of antibacterial clothing that can independently destroy microbes and fungal spores that fall on it. In order to give clothing such unique properties, it is impregnated with a special compound containing the so-called "dagger molecules". These molecules consist of two parts: "a point, which is a long chain of carbon atoms surrounded by hydrogen atoms, and a" handle formed by two connected molecular rings consisting of carbon and nitrogen atoms.The latter penetrate into the hydrocarbons of the fabric, so that this composition is not washed off clothes.When a bacterium or spore enters the fabric, its negatively charged outer shell is attracted to positively charged nitrogen rings and literally stumbles upon sharp carbon chains that cut the uninvited aliens.Who knows, perhaps the hour is not far away when the real ... >>

U-shaped computer keyboard 25.06.2003

The American company SafeType has released an original ergonomic keyboard, which is designed to save computer users from the inconvenience of traditional text input devices. The new keyboard has a U-shape. On the two side panels are alphanumeric and function keys. In this case, the keys that on a conventional keyboard fall under the left hand are on the left panel, and under the right hand - on the right. On the horizontal part of the keyboard there are control keys, multimedia keys, cursor control and an additional numeric keypad. Such an unusual keyboard configuration is due to the fact that with the vertical arrangement of the keys, the forearms are in the so-called neutral position (thumbs pointing up), in which the wrists practically do not strain. This is especially noticeable when working for a long time. However, such a keyboard also has serious drawbacks. To work with it, you must master the method of touch printing, since looking at ... >>

New SAMSUNG digital camera with built-in hard drive 24.06.2003

Samsung Electronics announced the start of deliveries to the market of a new digital camera ITCAM-7, announced back in January 2003 and equipped with a built-in 1,5 GB hard drive and a color LCD display. The camera allows you to record and play video and audio materials, as well as take pictures. It is built on a CCD-matrix with a resolution of 350 thousand pixels and is equipped with a 2-inch LCD display capable of displaying up to 210 thousand dots. In addition, Samsung ITCAM-7 supports MP3 music playback, and can be used as a portable storage device. In this case, any files can be written to the camera's hard drive - from simple documents to games. The built-in hard drive holds up to 66 minutes of MP4 video or 25 hours of 3Kbps MP128 music. ... >>

MATSUSHITA Starts DVD-RAM Promotion 22.06.2003

The Matsushita Electric Industrial Corporation is about to launch one of the biggest advertising campaigns ever in the world. The campaign will aim to promote Panasonic's new DIGA consumer DVD recorders and related DVD-RAM media format globally. One result should be the establishment of DVD-RAM as the world standard. To implement this difficult task, they even attracted the famous film director Oliver Stone. It will deal with some aspects of the campaign, and at the same time serve as an advertisement in itself, drawing attention to the same DIGA brand. We will be jammed with ads everywhere, with the exception of Japan and some other countries, throughout the entire time from June of this year to next May. Against this background, somewhere in late summer or early autumn, the first truly massive deliveries of these devices to literally all countries of the world will begin. ... >>

SANYO Moves to OLED Displays 21.06.2003

Following Sony, which recently announced the transfer of the production of LCD displays for mobile devices to OLED technology, another Japanese company, Sanyo, announced a similar intention. True, Sanyo is going to start producing much larger matrices that will be used to create computer monitors. At present, Sanyo's LCD panel plant has two lines, one of which produces 380 13,3-inch panels per month, and the other produces 160 15-inch panels in the same period. It is planned to convert the 13,3-inch line for the production of OLED panels soon. Thus, about 70% of Sanyo's liquid crystal display products will be made using OLED technology. The reason for such attention to the new technology on the part of the company is the desire to gain a foothold in this market sector as soon as possible and not allow Taiwanese and Korean companies to dominate it, as happened in ... >>

VHS continues to lose ground 19.06.2003

For a long time, the DVD format could not seriously shake the position occupied by VHS standard media in the consumer video sector. It wasn't until the prices of DVD drives, and then consumer players, dropped sharply that the market position of the VHS standard began to deteriorate steadily. Digital media with better picture and sound quality now costs not much more than a regular video cassette, so more and more people are choosing to buy DVD-ready equipment. A recently California-based organization called the Video Software Dealers Association celebrated the first ever increase in DVD rentals over VHS rentals. During the week in the United States, video rental customers checked out 28,2 million DVDs and only 27,3 million VHS tapes. If earlier it was noted that the number of DVD players sold exceeded the number of VCRs sold, now it is already obvious ... >>

Intel sold 1.000.000.000 processors in 25 years 17.06.2003

Intel Corporation celebrates the 25th anniversary of the production of semiconductor products based on its own architecture Back in 1978, the first processor from Intel in the x86 family was born - a 16-bit 8086 with a frequency of 4 MHz, which had only 77 thousand transistors. Later, in 29, its 1982-bit version - 8 went to the IBM PC XT trial line, which was destined to become the ancestor of all modern PCs. Microprocessor technology and semiconductor technology have come a long way since then, and today's Pentium 8088 processor contains 4 million transistors and has a clock speed of 55 GHz. Another event happened in April of this year - 3 years have passed since the release of the first x06 processor, and according to Mercury Research, during this time, Intel managed to sell 86 (one billion) of such processors. To be sure - an outstanding achievement that in the foreseeable future, no one but Intel itself will surely be able to repeat - the company assumes that ... >>

light bulb for computer 16.06.2003

The Technological Institute of Lausanne (Switzerland) has developed a method for creating subminiature LEDs. With its help, engineers made an LED with a luminous surface measuring 100 nanometers, which is about 50 times smaller than a human erythrocyte. The baby emits infrared light with a wavelength of 1,3 microns. The device will find application in optical computers of the near future. Scientists believe that the proposed technique will make it possible to create even more tiny LEDs that emit individual photons. ... >>

Gamma rays preserve wood 15.06.2003

French physicists have used radioactive irradiation to preserve fishing boats that are about six thousand years old. Under water or in moist soil, wood can be stored for thousands of years, but when it comes into contact with air, it quickly collapses. Boats, the so-called odnoderevki, hollowed out of oak trunks 5-6 meters long, were found last year near the banks of the Seine near Paris. First, the finds were soaked in special baths with synthetic resin - this took several months. Then they were placed for a day in a chamber with one and a half meter concrete walls, where a beam of gamma rays from a nuclear reactor was directed. Radiation, firstly, caused the polymerization of the resin, gluing the wood ready to crumble; secondly, it killed microbes and fungi that could cause decay. Previously, the wooden parts of the Titanic, raised from the bottom of the Atlantic, underwent the same treatment. Now boats proving that Paris is 4000 years older than historians have thought so far are on display at the Museum of the History of Par ... >>

An injection without a puncture 13.06.2003

Since the twenties of the last century, when the first micromanipulators were developed - lever devices like a pantograph, which greatly reduce the range of motion, biologists have been able to perform operations on individual cells under a microscope. Now genetic engineers often use micromanipulators to introduce new genes into the cell nucleus with a microsyringe. Pharmacologists inject medicinal compounds into the cell, observing its reaction. However, in this case, the cell membrane, its outer shell, is rather roughly injured. The English company Cell Engineering, which manufactures equipment for biological laboratories, took advantage of the fact that the cell membrane consists of a double layer of lipid molecules - fatty substances. The tips of the new micropipettes and needles produced by the company are coated with the same lipids. Now you do not need to pierce the membrane with force, it is enough to easily touch it with the end of the needle - and the lipids of the membrane adhere to the lipids of the needle, opening a channel in the cell wall. When the experimenter retracts the needle, the channel is tightened ... >>

The biggest virus 12.06.2003

The largest known virus has been found in the cooling tower water in Bradford, England. It lives inside amoebas that live in the water. The French microbiologists who made this discovery first mistook the virus for a small bacterium. Its diameter is 400 nanometers (0,4 microns), which is larger than the size of some bacteria. Typical for viruses sizes - from 10 to 100 nanometers. Scientists dubbed the find "mimivirus" because it mimics a bacterium. whether the mimivirus is capable of harming humans is still unknown, but it is said to be related to the smallpox virus. ... >>

wool house 10.06.2003

English farmers have quite a lot of low-quality wool from beef sheep. It is so cheap that it often does not pay off the fuel spent to bring it to market, especially from remote farms. One of the English companies began to produce a heat-insulating building material such as felt from such wool. It is more expensive than mineral wool, but its production requires seven times less energy, and the material itself does not cause allergies, is light, hygroscopic and is able to keep heat in the house in winter and keep heat out of the house in summer. As you know, Mongolian yurts, made of felt from time immemorial, possess these qualities. ... >>

Phone with repeat 09.06.2003

Engineers from the Japanese company Mitsubishi propose to build in a mobile phone a microchip for continuous sound recording with a capacity of 10 seconds and a sensor that senses when the handset is taken away from the ear, for example, to press a button. As soon as the phone is back at the ear, the recording of the last 10 seconds is played at a slightly accelerated pace and with almost no gaps between words. Having "caught up" with the interlocutor, playback stops, so that the subscriber does not miss a single word spoken during these seconds. You can also call a repeat of the last 10 seconds if you wish, for example, if a car hummed loudly nearby and you didn’t hear something. ... >>

My own battery 07.06.2003

Fuel cells, created so far, run on hydrogen, methane, alcohol, gas and other traditional fuels. In such an element, the fuel is oxidized at the electrode under the influence of a catalyst, and an electron flow occurs. Physicist Nicholas Maino of the University of Texas (USA) has developed a subminiature fuel cell that runs on the same fuel that people work on - on glucose. Any food we eat is first of all converted in the body into glucose, which is carried by the blood throughout the body to nourish the cells. Therefore, the new fuel cell is able to work if it is simply implanted under the skin. A biofuel cell consists of two electrodes - the thinnest carbon fibers, dressed with two types of enzymes involved in the absorption of glucose in the body. These electrodes, when implanted into the body, use the glucose present in the blood, in living cells, and in the extracellular fluid, thereby generating a current. In the experiments of scientists, two electrodes d ... >>

You can try an apple with your hand 05.06.2003

The Center for Agricultural Mechanization in Montpellier (France) has created a glove that checks the ripeness of an apple without removing it from the tree. The infrared sensor of the glove detects the concentration of sugar in the pulp under the skin with a simple touch. It is enough to spread your fingers, and then, closing them, click on the apple, after which the glove determines the hardness of the fruit by sound. The light indicator shows whether it is time to harvest. You can also determine the quality of the fruit on the merchant's tray. In the future, such gloves will be created for pears, cherries, watermelons and even grapes. ... >>

Brain from blood 04.06.2003

One of the employees of the Argonne National Laboratory (USA), whose duty is to look after cell cultures, fell ill and did not renew the nutrient fluid in the vessels with the culture of human blood cells for several days. When the researcher looked at the starving cells, he noticed that some of the white blood cells responsible for immunity in the body, due to starvation, were transformed into something else and looked unusual. By influencing the changed cells with a protein substance called nerve growth factor, the experimenters obtained neurons from them. Other biologically active compounds caused the transformation of blood cells into liver cells and blood vessel cells. The authors of the discovery suggest that such blood cells, capable of transforming into cells of other types, are carried throughout the body by blood flow, accumulate at the sites of damage and replace damaged cells of any tissue. Perhaps the time is not far off when, after taking a few milliliters of blood from a patient, ... >>

dog for diabetic 03.06.2003

Canadian scientists have decided to use the dog's phenomenal sense of smell to diagnose diabetes. They taught the English Cocker Paco to detect hypoglycemia by the smell of his breath - a dangerous drop in blood sugar in the owner of an intelligent dog. In such cases, Paco raises the alarm, and if the hostess is asleep or has already lost consciousness, the Cocker presses the ambulance call button. Two more dogs are currently undergoing similar training. ... >>

And cotton grass will bloom on Mars 01.06.2003

As for apple trees, it is not yet clear, but, according to the American botanist James Graham, a modest terrestrial plant, cotton grass, will be able to grow on Mars. Many are familiar with these thin twigs with a piece of something like cotton at the end, growing in humid places. Looking for plants that could survive in the harsh conditions of Mars, Graham found an extremely resistant species of cotton grass from Svalbard. But before sowing cotton grass, it will be necessary to prepare the Martian soil, populate it with microbes, which will provide the plants with the elements necessary for nutrition. ... >>

LED traffic light 29.05.2003

But on US roads, a traffic light with a single lens with a diameter of 30 cm is being tested. The light source is an LED matrix that can display signals of different colors and shapes. The green signal is a regular circle, yellow is a downward facing triangle, and red is an octagon with a thin white border. Various shapes allow you to quickly understand the signal even for color blind people. The traffic light can also display a green arrow on its screen indicating the direction of movement. Ready to go and portable on a tripod for installation in road worksites. ... >>

Electronic system for simultaneous interpretation into the sign language of the deaf and dumb 27.05.2003

The Institute of Computer Technology of the Chinese Academy of Sciences, as a result of the development of intelligent command recognition technologies, created a computer system for simultaneous translation into sign language. It is intended for deaf children. According to the project manager, Professor Gao Wen, this system has no analogues in the world and is capable of recognizing over 5 gestures. The words spoken by the operator are translated into sign language by the computer and displayed on the monitor. Now deaf and dumb viewers of TV programs will be able to "listen" to the news. The system can also be used for teaching sign language, as an electronic dictionary or as a tour guide. ... >>

65 thousand plastic flowers 23.05.2003

The technology for creating organic LED panels still has a number of significant drawbacks. The most important of which is the low resource of such devices. Despite this, many developers have focused on this particular direction. A camera has already gone on sale, the viewfinder of which is based on the use of OLED (organic light-emitting diode). In the near future, phones will appear whose secondary display will also use the effect of visible light emission by polymer materials. Moreover, if the resource cannot be increased yet, then the color rendition has been improved to a very decent level. South Korean joint venture NEC Mobile Display (SNMD) announced the creation of a passive OLED matrix capable of displaying 65 thousand colors. There is very little time left before the start of production of such matrices in large industrial volumes - this significant event is scheduled for the second half of this year. It is traditionally planned to use the novelty in mobile phones. ... >>

MATSUSHITA completely switched to lead-free boards 21.05.2003

From now on, all consumer electronics under the Panasonic trademark will be produced using lead-free technology. This applies not only to the components used and the solders used for mounting, but also to printed circuit boards. which excludes the use of lead. The company said that since 2003, more than 12 million lead-free devices have been produced. ... >>

Mini TV from phone 17.05.2003

If the device has a screen, then this device must be a TV. In this or approximately this way, the leaders of the KDDI company reasoned, having decided to start developing a mobile phone, on the screen of which it would be possible to watch TV programs. A similar phone manufactured by Sharp will soon be on sale, though only in Japan so far. But the user of this device can download a book he likes from the Internet and read it directly from the display. But the release of the phone-TV from KDDI is expected only by the end of the year, when Japan will begin to introduce digital broadcasting through terrestrial repeaters. At the Svyaz-Expocomm 2003 exhibition, the metropolitan mobile communications network MegaFon for the first time in Russia demonstrated a live broadcast of a TV program on a mobile phone screen via the GSM network. For this, VideoStreammg technology was used, which allows you to transfer video to GSM phones (not all, of course) and without a XNUMXG mobile network. In addition to the direct body ... >>

JUKEBOX by TDK 14.05.2003

Somehow it has already developed that MP9000 players with a built-in hard drive are usually called "Jukebox". Previously, this was the name of jukeboxes, but now the term seems to have stuck to technically advanced devices. Although the functional relationship of both devices is obvious. The ranks of modern Jukebox decided to replenish the company TDK. For this purpose, it launched the DA-20 CDRW on the market. A feature of this device is not even the presence of a hard disk with a capacity of 400 GB, but its combination with a CDRW burner. This gives rise to a lot of additional features, such as recording tracks from a hard drive to a disc on the fly, archiving ordinary audio CDs to a hard drive in MPXNUMX format, and, of course, the ability to connect all this economy to a computer using a USB interface. The package includes a remote control and batteries. The price for such a device is low - $XNUMX. ... >>

The Japanese are preparing new types of digital video recorders 11.05.2003

Video recorders will soon appear in electronics stores - video recording devices built on a combination of a DVD optical drive with the capabilities of a large-capacity built-in hard drive. Two similar recorders of the DIGA line were offered by Panasonic. The first is named DMR-E60. In addition to the features provided by the combination of a hard drive and a DVD burner, it is equipped with SD Memory Card and PCMCIA slots, making it suitable for viewing and storing information from digital cameras. This device is already on sale for $600. The second recorder is called DMR-E80, it is equipped with an 80-gigabyte hard drive and can store up to 104 hours of video. The DMR-E80 will hit the shelves in July and will cost $700. Electronic giants Toshiba and Hitachi also intend to hit the market with their new models of video recorders. Toshiba's device will be based on a DVD burner. Its release is scheduled for October this year. The recorder will be available for sale starting from ... >>

Samsung introduced TVs with DNIe technology 07.05.2003

Digital Natural Image engine (DNIe) - a new digital technology from Samsung Electronics - is now available in Russia. The DNIe system has been developed in Samsung laboratories for seven years and is now implemented in the latest TV models that will appear on the Russian market in early summer 2003. More than 80 original Samsung patents are used in the development of DNIe circuits and algorithms. DNIe technology consists of several functional blocks - optimizers of details, contrasts, images and color reproduction. Thanks to its intelligent analysis system, DNIe technology allows you to improve the image regardless of the type of screen and signal source. ... >>

288-Mbit RDRAM 1066 MHz 05.05.2003

The Japanese company Elpida Memory announced the start of deliveries of 288-megabit RDRAM (Rambus) 1066 MHz RAM chips intended for use in workstations, as well as high-performance desktop computers and network devices. The chips are produced using proprietary 0,13 micron technology in FBGA packages. The new 288 megabit chips will be used in RIMM and SO-RIMM modules from 128 to 512 MB. Chips and RIMM modules developed by Elpida specialists have already been certified by Rambus. In the near future, Elpida plans to start production of Rambus memory chips designed for operating frequencies of 1200 and 1333 MHz. According to the manufacturer, the new 288 megabit RDRAM chips use Rambus Signaling Level (RSL) technology, which allows not only to increase the operating frequency to 1066 MHz, but also to achieve increased memory reliability. The chips provide data transfer at a rate of two bytes per 0 94 ns (or 16 bytes per 75 ns). ... >>

Impregnation against fire 01.05.2003

For those who "work" with fire, special non-combustible clothing is very necessary. Impregnations for fabrics are already being used to protect them from fire. Scientists from the Institute of Chemistry of Solutions (Ivanovo) came up with new polymeric flame retardants based on nitrogen-containing derivatives of alkyl phosphoric acid. The main difference between these substances and those already known is that they slow down the flame, actively participating in the combustion process itself. The result of ongoing chemical reactions is a carbon residue that prevents air from reaching the material - and the fire recedes. In addition, the new moderators and their combustion products are non-toxic, all reactions proceed without the release of harmful substances. Fabrics and other materials impregnated with solutions of such retarders become resistant to burning, destruction of fibers, smoldering - and this is a very important quality for overalls. Any flammable materials can be treated with similar compounds: wood, wallpaper, linoleum, furniture upholstery, construction, department ... >>

Ink changes color 29.04.2003

New inks have been developed that can change color. In the future, thanks to them, it will be possible to create newspapers containing moving images, or, for example, indicators of chemicals that change their color in different chemical environments. A substance called "light ink" was developed by D. Ozin and J. Manners from the University of Toronto (Canada). The ability to emit light of all shades of the spectrum is determined by diffraction. The ink contains spherical particles of silicon dioxide with a diameter of about 0,3 microns, constituting ordered structures. Due to interference processes in the light reflected from them, the radiation of certain wavelengths is attenuated, as a result of which the reflected light acquires a certain color. To adjust the color ink to a certain color, a polymer gel was introduced into the ink composition. Under the action of the solvent, it swells, and when it dries, it shrinks. Changing the state of the gel (this process takes only 0,5 s) allows you to change the color of the ink. Gel, moreover, ... >>

microphone in ear 28.04.2003

South Korean firm Samsung has developed an in-ear microphone. The company claims it is the first in-ear microphone phone. It receives sound directly from the user's head, while filtering out about 90% of external noise. The in-ear microphone will go on sale later this year in wired and wireless (Bluetooth) versions. The latter should especially appeal to drivers using mobile phones: while driving, they will be able to talk without even putting on a headset. Today, such a headset usually consists of headphones and a microphone at the mouth and is connected by a wire to a cell phone. ... >>

transparent transistor 28.04.2003

Engineers from the University of Oregon (USA) have created the world's first transparent transistor. The scope of the novelty promises to be quite wide. In particular, such transistors can be used to improve the performance of liquid crystal displays. In addition, devices using transparent transistors can be mounted, for example, on car windshields to transmit visual information. ... >>

A non-sinking mobile phone 27.04.2003

The Swedish company Ericcson received a patent for the design of a non-sinking mobile phone. Ericsson's invention is a floating module that is installed on the back of the phone, on top of the battery, as a result of which the device becomes buoyant. The developers believe that such a scheme is better than a float combined with a battery. If necessary, it can be removed, which makes the device less cumbersome. ... >>

Mobile phone with a folding QWERTY keyboard 26.04.2003

The design group ATELAB Research from Poland proposes to use a full-fledged keyboard hidden inside the case in mobile phones. The design of the keyboard, called EDIT (Enhanced eDivision InTerface), resembles a folding knife: a thin plate with keys is hinged at the bottom of the phone and is folded inside it. When working with it, the user holds the phone in his left hand and with his right hand on the extended keyboard types the desired text. With a few simple changes, EDIT can be redesigned for left-handed users. On a small area of ​​the plate, the developers managed to place an alphabetic field with a standard QWERTY layout, a second row of characters, a number row and cursors. ATELAB believes that their keyboard will be in great demand with the growth in the number of sent SMS and EMS messages, the development of mobile services, mobile Internet and e-mail. ... >>

Computer mouse controlled by mouth 26.04.2003

In Japan, a computer mouse was invented that does not need to be touched when controlling the cursor. To do this, just blow on it and click your tongue at the right time. Created with the participation of specialists from the University of Hokkaido, the mouse resembles a microphone on a long stem, installed in front of the monitor just at the level of the user's mouth. The device is equipped with four sensory membranes. You need to blow in the direction where you want to move the cursor, the membranes automatically pick up the direction of breathing, and when you need to execute a command, the user must click his tongue. ... >>

SONY ELECTRONICS pays for past mistakes 24.04.2003

Sony Electronics has announced its readiness to fix free of charge the shortcomings found by the owners of the Cyber-shot DSC-P1 digital camera, which ceased sales in September 2001. It turned out that the dust settling on the charger connectors and their oxidation lead to the fact that the camera batteries do not charge properly and their life is far from what buyers expected when purchasing Sony products. The defect appears only after prolonged use of the charger, which is also an external power source for the camera in stationary conditions. Sony Electronics announced its readiness to replace the ill-fated blocks, and at the same time the batteries damaged by them, without taking a cent from the frustrated owners of the digital miracle. How much the promise will cost the company itself is not said out loud, but it is known that in total about 500 Cyber-shot DSC-P1 digital cameras were sold. True, as the representatives of the ... >>

Prototype mobile digital TV from MICROSOFT and LINX ELECTRONICS 24.04.2003

Microsoft and LINX Electronics announced their intention to demonstrate the first mobile digital TV receiver. Broadcasting to mobile TV receivers will be carried out in a special LINX Mobile standard, which is largely similar to the American digital television standard ATSC 8VSB, which is already being used in practice. The disadvantage of ATSC 8VSB is the inability to receive TV broadcasts from mobile devices. LINX Mobile eliminates this problem but introduces another one. Digital TVs designed for the ATSC standard cannot receive transmissions in the new format, which means they need to be replaced. As with ATSC, LINX Mobile's bandwidth is 9 Mbps. However, LINX Mobile uses Windows Media 9 Series technology for audio and video compression, which ATSC does not work with. The advantage of Windows Media 9 is that in a data stream of 5 Mbps, you can transmit a high-definition television image with sound in the format ... >>

SONY Unveils DVD Burner with Internet Access 23.04.2003

Sony has introduced a new digital recorder equipped with a DVD drive and 80 GB hard drive called the NDR-XR1. This device differs from its counterparts in that it can connect to the Internet via a broadband channel. In addition, the NDR-XR1 is equipped with a built-in browser that allows the user to browse the web using a TV connected to this unit. It's not so easy to find a suitable name for the NDR-XR1, the set of functions that this device has is extremely large. It allows you to record TV programs on the built-in hard drive, a signal from a camcorder via the DV input, as well as images from Memory Stick media. Of course, all this can then be rewritten to DVD discs. In addition to being able to read DVD-R/RW, DVD Video and many CD formats, the NDR-XR1 can burn DVD-R/RW discs. Through the Internet, the NDR-XR1 can connect to special servers containing TV programs, which ... >>

Wireless LCD TV by SHARP 23.04.2003

Sharp has announced a new line of wireless LCD TVs. The release of such devices is gradually becoming a good tradition - the market is growing, and the absence of wires is becoming, as they say, "a sign of good taste", therefore, an increasing number of manufacturers are paying attention to this aspect. The first model of the new line is called AQUOS LC-15L1 and is a 15-inch LCD TV. It is a stand-alone device powered by a built-in lithium-ion battery. The AV signal is transmitted from a base station equipped with a built-in receiver; transmission is carried out in the frequency range of 2,4 GHz. Sharp plans to start selling new items from May this year at a price of about $1400. ... >>

Twenty inches organic 22.04.2003

The creation of the first color rendering matrices was, perhaps, the most significant technological breakthrough in the field of visualization tools over the past few years. Now this technology, with all its capabilities, is beginning to push traditional liquid crystals. A good example of this was the announcement by Chi Mei Optoelectronics about the creation of a prototype of a twenty-inch full-color transistor array OLED (organic light emitting diodes) based on amorphous silicon. Matrices with such a large diagonal, a full range of transmitted colors and a resolution of 1280 x 768 pixels have not yet been available. Its main advantages, compared with traditional TFT LCD liquid crystal matrices, are the absence of color filters and a backlight module, as well as lower power consumption. True, the shadow mask required for OLED screens is still too expensive, so it’s too early to talk about the commercial use of the novelty. As an approximate start date for commercial production ... >>

ZL60301 - transmitter for fiber optic systems 22.04.2003

ZARLINK SEMICONDUCTOR's ZL60301 Fiber Optic Transmitter has four separate transmit and receive channels and operates at 2,7 Gb/s per channel, allowing up to 10,8 Gb/s to be transmitted in both directions. ... >>

Tiny single-gate logic chips 21.04.2003

TOSHIBA ELECTRONIC COMPONENT Corporation announced the start of serial production of the world's smallest single-gate logic chips. The new LMOS products are ideal for use in PDAs, mobile phones and other devices where weight and power consumption are among the most important parameters. The TC7SHxx series is available in a 1x1x0,48mm package. The microcircuits work with supply voltages from 2 to 5,5 V and have a delay time of 3,7 ns. ... >>

IR receiver modules TSOP48xxxxAM 20.04.2003

VISHAY INTERTECHNOLOGY launched the production of TSOP48xxxxAM infrared receiver modules, which have an operating temperature range of -40 to +90°C and are therefore ideal for automotive applications. A photodetector and an amplifier with AGC are arranged in a 6x7 mm package. The supply voltage from 4,5 to 5,5 V allows devices to operate on TTL and CMOS logic. The modules are designed for remote control systems and security systems. ... >>

TPA6211A1 - audio amplifier chip 20.04.2003

TEXAS INSTRUMENTS Corporation introduced the TRA6211A1 audio amplifier chip, which has the world's largest power rating per 1 mm2 - 340 mW. The microcircuit is produced in a QFN package with dimensions of 3x3 mm and can develop a power of 3 W into a load of 3 ohms. Designed for use in mobile phones, smartphones, digital notebooks, etc. ... >>

TEKTRONIX TDS7704 digital oscilloscope 19.04.2003

TEKTRONIX's new TDS7704 digital oscilloscope with 7 GHz analysis bandwidth solves many problems in telecommunications, computers and other high-speed applications. The oscilloscope has a unique 26 cm color display that can display 1024x768 pixels (XGA), so you can present data in 4 different screen segments and compare them with each other. Control can be done by touching the screen. ... >>

Digital Video Camera with Built-in Hard Disk Drive 19.04.2003

Representatives of SAMSUNG ELECTRONICS announced that a digital video camera with a built-in hard disk drive will go on sale in December. The camera uses a hard disk to record video and is able to shoot at high-definition television quality standards. The drive is a one-inch device with a capacity of 1,5 GB. The camera is capable of taking still pictures and recording MPEG4 video at 25 frames per second. Camera weight 195 grams, dimensions 62x36x105 mm. ... >>

New series of PMEG Schottky diodes 18.04.2003

PHILIPS SEMICONDUCTOR produces a series of PMEG Schottky diodes. Forward voltage drop - from 460 to 550 mV at currents from 0,5 to 2 A. Reverse voltage is from 10 to 20 V, operating temperature range from -65 to +125°C. The devices are available in SOD-323, SOD-523 and SOT-666 surface mount packages. ... >>

NLAS2066 - analog switch for separating USB lines and standard logic 17.04.2003

ON SEMICONDUCTOR introduced the world's first NLAS2066 analog switch designed to separate USB interface lines from standard logic. In accordance with the requirements of USB, the microcircuit can withstand increased voltage up to 5,5 V during the day. ... >>

Most Integrated Serial-to-Parallel Converters 17.04.2003

NATIONAL SEMICONDUCTOR introduces the world's most integrated Serial-to-Parallel Converter (SerDes) that converts eight 10-bit signals to eight serial signals (SCAN928028 chip) or six serial signals to six 10-bit signals (SCAN926260 chip). These devices save 30% energy and 50% volume compared to the previous ones. Application: 3G stations, display interfaces, wireless local systems. ... >>

MG4100 Subminiature GPS System 16.04.2003

MOTOROLA Corporation manufactures the MG4100 subminiature 12x16mm GPS system, which includes all the necessary functional blocks for positioning with an accuracy of up to 10 meters (95% probability). The chip operates at a supply voltage of 3 V and consumes 185 mW. ... >>

Microcontrollers PIC18F1220, PIC18F1320 15.04.2003

The new microcontrollers PIC18F1220, PIC18F1320 from MICROCHIP TECHNOLOGY have all the advantages of the PIC18 family of microcontrollers, namely: high computing performance with minimal cost, increased number of guaranteed erase/write cycles with a larger amount of flash program memory; rich set of peripheral modules. The PIC18F1220, PIC18F1320 microcontrollers are the logical choice for applications with high power requirements. ... >>

Subminiature unwound inductors 15.04.2003

MATSUSHITA CORPORATION manufactures subminiature unwound inductors measuring 1x1,5x1,5mm. Inductance ratings from 1 to 68 nH, tolerance + 5%, quality factor up to 90. ... >>

LT5522 - signal frequency transfer mixer 14.04.2003

The LT5522 mixer from LINEAR TECHNOLOGY is designed for signal frequency transfer in various applications (both cable and RF telecommunications). The 1,2 to 2,3 GHz signal is carried down to 600 MHz or up to 2,7 GHz. The microcircuit has a high transmission linearity, consumption is 280 mV at a supply voltage of 4,5 to 5,25 V. It is produced in a QFN-16 package with dimensions of 4x4 mm. ... >>

Solar cells IXOLAR 14.04.2003

IXYS Corporation has proposed a new high efficiency solar cell technology called IXOLAR. The first family of elements using this technology, the XOD-17 comes in 5-inch plates. The efficiency in these silicon wafers reaches 20% or more. ... >>

Processor Intel Celeron 2,7 GHz 13.04.2003

Intel Corporation announced the release of the Intel Celeron processor with a clock speed of 2,7 GHz for laptops and portable personal computers. Based on 0,13 micron technology, the processor comes in a 478-pin package and uses a 400 MHz system bus. ... >>

80-channel optical link switch 13.04.2003

FUJITSU COMPONENTS announced the creation of an 80-channel optical communication switch that uses microelectromechanical mirrors. The switching speed is 1 ms. The new switch is expected to be applied to the next generation of optical cross-connect systems. The company released a device called the "Universal Energy Standard" 6100A. The device is designed for verification and calibration of devices for measurements in electrical networks and provides the generation of such signals: a pure sinusoidal signal, a signal with harmonic distortion, a signal with various types of noise. Signals are formed on 4 phases, which allows you to test any equipment. ... >>

Optically Isolated Amplifiers FOD2742 12.04.2003

FAIRCHILD SEMICONDUCTOR has released FOD2742 optically isolated amplifiers with a tolerance of up to 0,5%. With a supply voltage of 2,5 V, they have an insulation voltage of up to 2,5 kV. Available in SOIC-8 packages. ... >>

Projector EPSON EMP-8300 11.04.2003

The new EPSON EMP-8300 projector has exceptionally high specifications: XGA (1024x768) resolution, but also VGA, SVGA, SXGA, UXGA formats, brightness up to 5200 ANSI, contrast ratio 1200:1, image size diagonally up to 7,5 m ( distance to the screen up to 15 m), work with video standards NTSC, PAL, SECAM, HDTV. Sound power up to 7 W, weight 11,2 kg. ... >>

Capacitors for vehicles with hybrid start 11.04.2003

EPCOS announced the release of new powerful capacitors for cars with hybrid start (two independent ignition systems). The new capacitors will be light in weight and will be able to store energy efficiently. Technological features are not reported. ... >>

DC-DC Converters MAX1553/4 10.04.2003

The new DC-DC converters MAX1553/4 from DALLAS SEMICONDUCTOR-MAXIM are designed to power from 2 to 10 white LEDs connected in series, therefore they have an external MOSFET switch with power supply up to 40 V. At the same time, MAX1553 has a consumption of 480 mA, and MAX1554 - up to 970 mA at a supply voltage of 3,6 V, while providing a nominal current of 20 mA on the LEDs. Available in 8-pin TFDN-8 packages, 3x3 mm. ... >>

High Definition TV Test Signal Generator 10.04.2003

B&K PRECISION's Model 1253 HDTV Test Signal Generator is compact, lightweight and battery operated. It can be used to test plasma, LCD, CRT displays and displays on organic light-emitting devices. Device dimensions 8x14x3 cm. ... >>

ADSX34 - 34x34 point synchronous switch chip 09.04.2003

ANALOG DEVICES has released a 34x34 point synchronous switch IC type ADSX34 of the Xstream family, operating at speeds up to 3,2 Gbps. Level alignment is provided for each input. The microcircuit is produced in a 304-pin EBGA-304 package with dimensions of 31x31 mm and consumes only 5 W of power. It takes only 30 ns to reconfigure the switch without losing data. The chip is compatible with Ethernet, ATM, TDM protocols. ... >>

Gallium Arsenide Amplifiers MGA-61563 and MGA-62563 09.04.2003

AGILENT TECHNOLOGIES introduces the MGA-61563 and MGA-62563, low-cost, easy-to-use GaAs Amplifiers, operating in the 0,1 to 6 GHz (MGA-61563) and 0,1 to 3 GHz (MGA-62563) frequency ranges . The ICs provide up to 22 dB gain, 1,2 dB noise factor and are rated for 50 ohm loads. Available in compact SOT-363 packages. ... >>

AT76C113 - a new family of digital video camera processors 08.04.2003

ATMEL Corporation announced the release of a new family of digital video camera processors AT76C113. All functions necessary for the operation of a digital camera are combined in one chip (image capture, processing, compression, storage, display, operation control). The AT76C113 processor supports all flash card interfaces. It has all the necessary peripherals, including TV output, USB, UART, SPI, digital audio interfaces, LCD indicator interface. The processor supports cameras up to 3 megapixels. ... >>

TOSHIBA 2 and 4 Gigabit Flash Memory Chips 08.04.2003

The Japanese company Toshiba introduced two-gigabit NAND (NAND) flash memory chips. as well as 58-gigabit NAND flash memory chips. consisting of two two gigabit chips. According to the manufacturer, the new microcircuits will make it possible to create universal high-capacity flash cards. Chips TC14DVG1B00FT58 (two-megabit) and TH24DVG1B00FT48 (four-megabit) are made in 12-pin TSOP type I packages (dimensions - 20x1.2x32) Block size - 512 kB. page size - 16 + 6 1, write time - 2 ms per page, erasure time - 50 ms per page, access time - 50 µs at first access. 1999 not - on subsequent calls. The new chips were developed by Toshiba and SanDisk as part of a 0,13 agreement to work together on NAND flash memory. Chips will be produced using XNUMX-micron technology. ... >>

The smallest microbe 07.04.2003

German microbiologists, studying the ocean floor north of Iceland, found the smallest microbe that parasitizes other, larger microbes. The diameter of the new microorganism is less than a micron, and its gene set consists of only two to three hundred genes (for comparison: a person has about 30 thousand of them). ... >>

Mine detector in a boot 07.04.2003

The French engineer Christophe Keroleinen proposed a mine detector that not only signals the presence of a mine in the ground, but stops a person walking through a minefield. Sensitive sensors are mounted in boots, the signal from them goes to the microprocessor mounted on the belt. Electrodes are glued to certain points of the leg muscles. When the microprocessor applies voltage to them, the muscles are paralyzed, and it is simply impossible to take the next step directly onto the mine. All this happens in just 20 microseconds - much faster than a person could be aware of the beep of a mine detector. The prototype device is being tested by the French army. ... >>

A woman's heart is quarrelsome 06.04.2003

After analyzing data on 167 kidney, heart and liver transplants performed in 49 countries, German doctor Martin Zeier concluded that the gender of the donor from whom the organ was taken is important for the success of the transplant. If a woman's heart was transplanted to a man, then the chances of a rejection reaction in the first year after the operation are 13 percent higher than if it was a man's heart. With kidney transplants, this figure reaches 22 percent. I must say that such an effect was not found in women - they calmly accept organ transplants from men. Dr. Zeier believes that the reason for this is insufficiently studied differences in the immune system of women and men. But he doesn't recommend that men turn down offered organ transplants if the donor is of the wrong gender: donors are chronically scarce, and rejection can usually be quelled with medication. ... >>

Long range toothfish 06.04.2003

Off the western coast of Greenland, fishermen caught a large fish unfamiliar to them: weight 70 kilograms, length 180 centimeters. She was frozen, and later delivered to Danish scientists (Greenland is under the jurisdiction of Denmark). Ichthyologists from the University of Copenhagen were surprised to recognize in an unexpected find an Antarctic species from the Nototheniaceae family - the Patagonian toothfish. This largest fish in Antarctica was discovered relatively recently, in 1901. Until now, she was caught no north of the coast of Uruguay, and suddenly she was caught in nets at the other end of the world, in the Arctic. The Patagonian toothfish cannot tolerate water temperatures above 11 degrees Celsius and the only way it could cross the equator was to go to depths of 500 to 1500 meters where the water is cold even in the tropics. Apparently, such a record swim is extremely rare or even unique: off the coast of Greenland, commercial fishing has been going on for more than twenty years, and the fishermen have never come across Antarctic species. ... >>

It snowed in the universe 05.04.2003

According to the calculations of two Swiss physicists - Daniel Pfenninger (University of Geneva) and Denis Puy (University of Zurich), about 500 million years after the Big Bang, the Universe was filled with snow from light flakes of frozen hydrogen. When the first stars lit up, their rays melted the hydrogen snow. Since then, solid hydrogen can only exist in the interiors of gas giant planets. ... >>

Neolithic dairy farms 04.04.2003

Chemist Richard Evershed of the University of Bristol has used a new, highly sensitive mass spectrometer to examine the fragments of nearly a thousand pots unearthed from early man's settlements across Britain. These fragments, ranging in age from 1500 to 6000 years, belong to the Neolithic, Bronze and Iron Ages. On some of them, including the most ancient ones, remains of milk fat were found. Thus, the earliest inhabitants of the British Isles ran dairy farms as early as 6000 years ago. It is not clear in what form people then consumed milk. Many anthropologists believe that early man was intolerant of lactose, milk sugar. And in most modern peoples of Asia and Africa, milk causes intestinal upset. So, perhaps the ancient Britons curdled milk, making something like cheese or cottage cheese. Or maybe they waited until yogurt turns out. Now chemists, in collaboration with archaeologists, intend to examine the ceramics found in the southeast of Europe, in Turkey and the Middle East. ... >>

How to recognize fake lycra 04.04.2003

Especially elastic Lycra fiber of the American company "DuPont" is very popular, and cases of fakes are not uncommon. For example, in 1999, 25 million textile products labeled "lycra" but not containing this fiber were confiscated in Europe, and in 2001 - more than 100 million (data for 2002 are not yet available). Protecting itself and customers from fakes, the company began to introduce certain chemical additives into the fiber at all its 11 factories producing lycra, which can be detected using a special device. The composition of these chemical markers is kept secret. Large wholesale buyers of textiles have already purchased a desktop device that checks for the presence of Lycra in knitwear, and in mid-2003 a handheld scanner with the same capabilities will go on sale. ... >>

Instant Blood 03.04.2003

French researchers have created artificial blood, the hemoglobin of which is fixed on the surface of balls made of a harmless polymer that gradually decomposes in the body. These balls are 20 times smaller than natural erythrocytes, so they penetrate well into the thinnest capillaries. Artificial blood is suitable for transfusion to everyone, regardless of blood type. In addition, it can be dried for storage and transportation, and diluted with saline before use. ... >>

talking fingers 03.04.2003

At the competition of young inventors, held by the electronic company "Intel" (USA), the first prize - one hundred thousand dollars to pay for higher education was received by a schoolboy Ryan Patterson. His invention is a glove that converts sign language used by the deaf into letters and words that appear on a computer screen. The patent application filed by the schoolboy slightly outpaced a similar idea proposed by the Japanese electronics giant Hitachi. ... >>

Science requires sacrifice 02.04.2003

Scientists are exposed to more stress at work than employees of commercial companies. This conclusion was reached by the authors of a psychological study conducted on more than 900 teachers at the Massachusetts Institute of Technology (USA). More than 60 percent of those surveyed say they feel emotionally and physically drained at the end of the working day, and 78 percent complain that no matter how hard they try, they don't get everything done in a day. For comparison: only half of the surveyed employees of various firms noted the same fatigue from work. Two-thirds of MIT employees are dissatisfied with the hectic pace of their work and the intense stress they are exposed to. Two-thirds work 60-hour weeks or more, while in 1989 less than half had such busy work schedules. More than 50 percent of respondents say that this stress has a bad effect on family life and relationships in the workforce. Especially b ... >>

center of shame 02.04.2003

Studying patients after the removal of a brain tumor that destroyed a certain part of it, neurophysiologists from the University of Berkeley (USA) discovered where a person has a sense of shame. When such patients, deprived of some part of the brain, were asked about unpleasant situations that happened in their lives, they without any feeling of inconvenience recounted the details of their behavior that did not do them honor. They did not hesitate to reveal compromising details about other participants in the incident, even about their friends and relatives. The rest of the patients behaved normally. Physiologists suggest that the spontaneous nocturnal activity of the "center of shame", which lies just behind the frontal bone above the eye sockets, causes occasional dreams like "Counselor Popov's sleep", in which we are not fully dressed in a public place. ... >>

Two-storey garage in the country 01.04.2003

For those who have two cars, and the summer cottage is so small that there is simply nowhere to put them, Irish designers offer a kind of whatnot. By pressing a button on the remote control, one car plunges into a concrete pit, and the other is placed on a flat roof that closes this pit. ... >>

solar inflatable oven 31.03.2003

The American company Soltac has released a solar inflatable furnace, which is a balloon made of aluminized polyester film, which, when inflated, takes the form of a solar parabolic collector. A pot with a volume of 1,5 liters, placed in focus, boils in about 1,5 hours on a sunny day. A black pot with a Teflon coating inside is attached to the stove, in which the whole structure is packed when carried. ... >>

Flexible solar panels 31.03.2003

The Canadian company "Spheral Solar" has developed flexible solar panels - a denim-like material capable of generating electricity under the influence of sunlight. This material can be placed on a surface of any shape, not necessarily flat. The efficiency of batteries made from this material is 11%, which is comparable to the efficiency of conventional flat solar cells, and much better than their flexible, conductive polymer counterparts.A relatively cheap new material is made from tiny silicon beads sandwiched between two layers of aluminum foil and sealed in plastic.Each bead acts as a separate photovoltaic cell, with the foil acting as electrical contacts. . ... >>

Output from mobile phone to printer 30.03.2003

Representatives of Nokia and Hewlett-Packard announced that by the end of 2003, mobile phones will have another useful feature: direct text and image output to a printer, bypassing a computer. Owners of modern printers and digital cameras have long been able to directly dock their devices, and the turn of mobile phone owners has come. Nokia plans to equip the 60-series models - 7650 and 3650 - with direct printing technology first of all. Bluetooth has been chosen as a wireless radio interface between the printer and the phone, effective at distances up to 10 meters. ... >>

The end of PANASONIC VCRs 29.03.2003

The world-famous brand, known not least for its video recorders, will gradually abandon the production of the latter in connection with the transition to the production of household models of DVD recorders. Now Matsushita produces 80000 of these devices monthly. The first step in mastering the market will be to increase this figure to 150000. An additional stimulating fact, apparently, will be the traditionally low cost of Matsushita products compared to competitors' counterparts. However, new product lines will no longer be so cheap, but they will still compare favorably with analogues in the number of functions. In any case, we are promised so. All new VCRs are planned to be produced, as before, under the DIGA brand. Matsushita also has real concepts in stock, for example, such as the AV server. This device is defined by the developers themselves as a broadband receiver. It connects to your home network and can, for example, set a video recording timer ... >>

Mobile phones will last 10 times longer 28.03.2003

A small Korean firm, Kokam Engineering, claims to have created super-capacity mobile phone batteries. According to her, the new batteries have a capacity of 6600 milliamp-hours (mAh), while conventional ones have an average capacity of 600 mAh. The company intends to produce batteries for most brands of cell phones. Together with the cable and charger, the kit will cost $100. Technological details were not disclosed. ... >>

Single-chip batch processor for signal conversion 27.03.2003

ZARLINK SEMICONDUCTOR announced the release of a single-chip packet processor for converting TDM signals to Metro Ethernet signals. This processor will allow large amounts of data to be transmitted over Ethernet networks. It can operate 32 T1/E1 lines simultaneously or 1024 TDM circuits. The processor is very flexible, it allows each T1/E1 channel to work with its own timing. ... >>

New TOSHIBA DVD Recorders 26.03.2003

TOSHIBA ELECTRONIC COMPONENT Corporation announced the release of the second generation of DVD recorders, D-R1. The unit allows simultaneous recording and playback, allowing the user to burn their favorite programs directly to DVD. The device also has a lot of other service applications (introduction of splash screens and marks on recordings, etc.). ... >>

High Speed ​​Digital Signal Processors TMS320C6414/15/16 25.03.2003

TEXAS INSTRUMENTS Corporation has released the world's fastest digital signal processors TMS320C6414/15/16 clocked at 720 MHz. The processor supply voltage is 1,2 V, but they can withstand up to 3,3 V at the inputs and outputs. They are produced in BGA-532 packages. ... >>

Differential probe TEKTRONIX P735 24.03.2003

For its TDS6000, TDS7000 and CSA7000 series oscilloscopes, TEKTRONIX has released a 7350 GHz differential probe type P5. The signal rise time in the probe does not exceed 100 ps, ​​and the input capacitance is less than 0,3 pF. The probe allows you to monitor signals in high-speed communication lines. ... >>

Chips for LCD control with XGA and SXGA formats 23.03.2003

ST MICROELECTRONICS introduces the first fully integrated ICs for driving XGA and SXGA LCDs of the ADE3700X/3700XT/3700SX types. They include a 9-bit ADC, a display controller, a programmable time controller, and other devices. Microcircuits are produced in the PQFP-128 package. ... >>

90 nm and even 65 nm from SAMSUNG ELECTRONICS 22.03.2003

At the international technology symposium held in Kyoto (Japan) on June 10-14, SAMSUNG ELECTRONICS Corporation presented new technological solutions that allow moving to a topological step of 90 nm and even 65 nm. These solutions will be used to build memory chips with a large amount of memory. ... >>

Transient voltage suppressors from ON SEMICONDUCTOR 21.03.2003

ON SEMICONDUCTOR has introduced five new protection devices - transient voltage suppressors. Their feature is ultra-small dimensions of 1,6x1,6x0,6 mm. These devices are ideal for use in small-sized equipment: mobile phones, digital cameras, digital secretaries, etc. ... >>

LMX243x - frequency synthesizers based on PLL circuits 20.03.2003

A new family of ICs - frequency synthesizers based on LMX243x PLL circuits from NATIONAL SEMICONDUCTOR. These microcircuits provide minimum consumption at frequencies above 3 GHz. The LMX2434 chip has an operating frequency of 5,0 GHz and an intermediate 2,5 GHz and consumes only 7 mA. LMX2433 has an operating frequency of 3,6 GHz, intermediate 1,7 GHz and consumes 5,2 mA. The LMX2430 has an operating frequency of 3,0 GHz, an intermediate frequency of 800 MHz, and consumes 4,2 mA. The supply voltage for the entire family is from 2,25 to 2,75 V. They are available in TSSOP-20 packages or in miniature packages with dimensions of 3,5x3,5x0,6 mm. ... >>

DSP56371 - audio signal processor 19.03.2003

MOTOROLA Corporation announced the release of a new 24-bit digital signal processor DSP56371 for audio signal processing. The processor supports all the latest audio processing technologies, including Dolby, THX, DTS, AAC, and has twice the performance of its predecessor. Available in TQFP-80 package. ... >>

The world's first optical fuse from MOLEX 18.03.2003

MOLEX is the world's first optical fuse. This is a passive component that is placed on the input port of the receiving optical device or on the output port of the emitting optical device (laser) to protect devices from radiation pulses. When the intensity of optical radiation is below the threshold level, the fuse remains transparent. When the level is exceeded, it becomes opaque and does not transmit radiation. Typical fuse losses are 0,5...1 dB. ... >>

LTC4054 - IC for charging lithium-ion batteries 17.03.2003

The LTC4054 chip from LINEAR TECHNOLOGY is designed to charge lithium-ion batteries with a current of up to 800 mA. The supply voltage of the microcircuit is from 4,25 to 6,5 V. The microcircuit automatically sets the charge and discharge time and has feedback on the battery temperature. Available in a miniature 5-pin SOT-23 package. ... >>

ISL43640 - 4:1 multiplexer-demultiplexer 17.03.2003

INTERSIL Corporation announced the launch of the ISL4 1:43640 Multiplexer/Demultiplexer in a miniature 3x3mm package. The instrument operates over a voltage range of 2 to 12 V (maximum 15 V) with a switching time of 25 ns. Key forward resistance less than 50 ohms, direct resistance matching less than 0,5 ohms. The chip is fully compatible with TTL and CMOS chips. ... >>

Single-phase bridge rectifiers 4GBUxxLS 16.03.2003

INTERNATIONAL RECTIFIER's 4GBUxxLS single-phase bridge rectifiers are designed as glass-coated chips for operation in high-temperature environments. The rectified current is 4 A, the forward voltage drop is 0,975 V per 25°C, the reverse voltages in different versions are 200, 400 and 600 V. They are produced in the SIP-4 package. The new MOSFET IRF8010 has a forward resistance of 12 milliohms - 10% less than previous devices. The drain voltage is 100 V, the maximum operating current is 80 A, the thermal resistance is 0,57 ° C / W. Available in TO-220, TO-262, D2PAK cases. ... >>

New Bluetooth devices from PHILIPS SEMICONDUCTOR 15.03.2003

PHILIPS SEMICONDUCTOR announced two new products in its Bluetooth family, the BGB102 radio system and the PCF87852 data ROM, which together form a complete solution for Bluetooth systems. The BGB102 radio system includes all the necessary RF circuitry: transmitter, receiver, antenna switch, etc. All of this is housed in an ultra-small 6x6mm package. The data ROM (flash option is also available) has everything you need for mobile operations and comes in an ultra-small 80x7mm LFBGA-7 package. ... >>

Microprocessor INTEL PXA800F 14.03.2003

Intel Corporation released the PXA800F microprocessor, which combines the functions of a mobile phone and a handheld computer in one device. The microprocessor is produced on the basis of technology with a step of 0,13 microns; operates at a frequency of 312 MHz, has a flash memory of 4 MB and 512 KB of static RAM. ... >>

Ultra-compact 16-bit microcontroller MB90F455/456/457 14.03.2003

FUJITSU COMPONENTS' ultra-compact 16-bit MB90F455/456/457 microcontroller measures just 7x7mm. Instruments powered by 3,5 to 5,5 V have a 24 to 64 KB mask ROM and 2 KB RAM. Peripherals include 8-10-bit ADC, UART with full duplex double buffer, 8-16-bit timer, PLL-based frequency synthesizer. Clock frequency 4 MHz. Available in an LQFP-48 package, with 34 pins being ports. ... >>

Powerful switch for DC-DC converters 13.03.2003

FAIRCHILD SEMICONDUCTOR introduced the FS6X1220RT power switch IC for DC-DC converters, Internet phones, industrial power supplies, telecommunications stations. The device includes a pulse-width modulator and a powerful SenceFET field-effect transistor. The device includes a built-in 300 kHz frequency generator, protection against short circuits, overvoltage and overheating. The powerful output transistor has a maximum allowable output voltage of 200 V. It is available in 5-pin packages T0-220F-5 and D2-PAK-5. ... >>

Pocket infrared thermometers 12.03.2003

EXTECH INSTRUMENTS announced the release of pocket infrared thermometers model IR201. The thermometer weighs only 80 grams and measures the temperature of a 1 inch object at a distance of up to 6 inches (15 cm) in a temperature range from -30 to +260°C. ... >>

Miniature Antenna Switches for Mobile Phones 11.03.2003

EPCOS has released the world's smallest antenna switches for mobile phones. The B7630 is only 3,8x3,8mm in size, 1,3mm high and saves up to 40% of the space taken up by other brand switches. Mobile phone manufacturers can improve the performance of their phones through this. ... >>

AD8370 Digital Gain Control Amplifier 10.03.2003

ANALOG DEVICES launched the AD8370 Digital Gain Control Amplifier. The amplifier provides a bandwidth of 700 MHz, the gain can be changed by 28 dB (from 6 to 34 dB). Available in TSSOP-16 package. Gain data is entered via a 3-wire serial interface. The new 24-bit sigma-delta ADC has the lowest consumption of any device in its class (only 65 µA). It is powered by a single source with a voltage of 3 or 5 V. The data output rate is set by software and can reach 120 Hz. ... >>

Photo sensor HDSL-9000 for backlighting LCD displays and keypads 10.03.2003

AGILENT TECHNOLOGIES introduced the HDSL-9000 photo sensor, which estimates the amount of light at any time and sends a signal to adjust the backlight in LCDs and keypads. This reduces the power consumption of batteries and accumulators in devices such as mobile phones, notebooks and mini-computers. The device has a maximum sensitivity at a wavelength of 550 nm (the same wavelength is most sensitive to the human eye). It has a digital sensitivity setting. Produced in a case with dimensions of 1,1x4x3,2 mm. ... >>

TOSHIBA SATELLITE laptops can now burn DVD-R/RW 09.03.2003

Toshiba has introduced new laptop models from the Satellite series, positioned as a replacement for desktop PCs. Relatively inexpensive machines are equipped with DVD burners. New items are marked 2455S305 and 1955-S805 and cost respectively 2299 and 2099 US dollars. For this money, the user gets a system on a Pentium 4 processor with 512 MB of memory and a 60-gigabyte hard drive. Other components the same for both machines; NVIDIA GeForce4 420 Go video system with 32 MB video memory, V.92 modem, 10/100 Mbps network adapter from Intel, three USB 2.0 ports and one i Link (IEEE 1394). Notebooks are equipped with DVDR/RW drives. The package also includes Windows XP Home. The differences between the models lie in the larger diagonal of the screen: the Satellite 1955-S805 has 16 inches with a resolution of SXGA (1365x1024) versus 15 inches for the Satellite 2455-S305 with a resolution of 1024x768. In addition, the processor frequency of the first is 2,53 GHz, the second - 2,4 .XNUMX GHz Both models belong to ... >>

Football with electronics 08.03.2003

The German company Cairos Technologies has proposed an electronic system that will free football players, football referees and fans from contentious situations. Each player will receive a radio transmitter the size of a credit card, a transmitter the size of a nut will be hidden in a ball, and up to ten antennas will be placed around the field. The central computer, receiving signals from transmitters, will record the position of the ball and each participant in the game hundreds of times per second. All information is transmitted to a receiver attached to the referee's wrist. The computer will give sound signals about violations, it will be able to control television cameras so that they constantly monitor the ball, and after the game, coaches and referees will be able to schematically restore all its ups and downs on the monitor screen. Trials of the system are scheduled at a stadium in Nuremberg, and the firm hopes it will play the 2006 World Cup games. ... >>

Dark Sky Conference 07.03.2003

Last fall, a conference of the International Association for the Protection of Dark Sky took place in the United States. Its members are fighting against excessive lighting of cities. It especially hinders astronomers: even hundreds of kilometers from a big city it is impossible to observe faint stars, and in the city itself the stars are not visible at all. But astronomers make up less than half of the association's ten thousand members. It includes, for example, lighting engineers who are developing more efficient street lights so as not to light up the sky in vain. Zoologists also protest against bright lighting - it knocks migratory birds off the route and disrupts the biological cycles of wintering ones. Physicians who spoke at the conference hypothesized that electric lighting is at least partly to blame for the rise in cancer rates. This growth has been observed just since the moment when incandescent light bulbs became widespread. The unnatural extension of daylight hours, according to some doctors, disrupts the hormonal balance, and hence not ... >>

Garbage chute for fire rescue 07.03.2003

German engineer Günter Voigt proposes to build his invention into new high-rise buildings to save people in case of fire. These are wide pipes of the type used in garbage chutes. In the event of a fire, the residents put on something like a parachute - a disk with a diameter of a pipe sticking out over their heads - and jump into the "garbage chute". Due to friction against the walls of the pipe, the disk slows down the speed of the fall of the escapee to two or three meters per second. In addition, a blower can be placed below to additionally restrain the fall with air pressure, and even change the direction of movement, raising firefighters and rescuers, as well as their equipment, to the upper floors. Such pipes can be attached to existing houses from the outside. The unit has been successfully tested on models. ... >>

Washing wine corks 06.03.2003

Every year 20 billion bottles of wine are bottled in the world, and this number is constantly growing. An important problem for large wine producers is the quality of the cork. If the wine acquires the taste and smell of capping, its price immediately drops sharply. This characteristic smell is given to cork by the so-called chloranisols, strong-smelling compounds that are released by bacteria and fungi that sometimes settle on natural cork. A few thousandths of a milligram of chloranisols per gram of cork is enough to ruin a vintage wine. French scientists from the Scientific Center for Atomic Energy have developed a method for washing stoppers from chporanisols with carbon dioxide under high pressure and at a temperature of 31 degrees Celsius. The gas washes out odorous compounds from the smallest pores of the cork. The best French tasters, whose tongues are 10 times more sensitive than the most modern chromatographs, found no unpleasant taste or smell in washed-corked wines. ... >>

Illuminated glasses 05.03.2003

Australian physiologist Leon Luck built green and blue LEDs into his glasses. He claims that glowing goggles make it easier to adjust to a new time zone after a long distance flight. LEDs create 3000 lux illumination directly at the eyes, which corresponds to the illumination on a cloudy winter day. Such light inhibits the production of the sleep hormone melatonin. If two or three days before a long-distance flight, wearing illuminated glasses in the evenings, prolonging the daylight hours, the time on the biological clock shifts, and it will be easier for a person to adjust to the local time. ... >>

Electric scooter for bathers 04.03.2003

Delfjet is the name of an electric bathing scooter, launched in Germany. In a streamlined body of bright colors, an electric motor with a capacity of 5 or 7 horsepower (two versions of the scooter are produced) with an impeller on the axle is hidden. By creating a jet stream of water, it allows you to swim on the surface or under water (no deeper than 2,5 meters) at speeds up to 15-20 kilometers per hour. The engine is powered by lithium batteries with a total capacity of 2 kilowatt-hours, their charge is enough for about 40 minutes of sailing. If the swimmer releases the handles they are holding on to, the engine will immediately shut off. ... >>

Radar on the bumper 03.03.2003

When reversing a car, especially a long truck or bus, nothing is easier than bumping into something. The American firm Rostra Precision Controls has proposed a low-power radar to complement the rear-view mirror. Two antennas are mounted under the rear bumper if it is made of plastic, or on it if the bumper is metal. The locator detects proximity to other vehicles, walls, gates, poles, trees, and people (including small children) from about 3,5 meters, depending on the size and density of the object. As you approach the obstacle, first yellow and then red lights on the rear window begin to flash and a sound signal beeps rhythmically in the driver's cab. When there is very little to the obstacle, the squeak becomes continuous, and the red lights become constant. The system is activated automatically when the driver engages reverse gear. ... >>

Grandpa's diet affects grandchildren 03.03.2003

Overeating grandparents may be ruining the health of their grandchildren. In any case, this is the conclusion of a study conducted by Swedish scientists. Gunnar Kaati and his collaborators collected the medical histories of 300 Swedes born between 1890 and 1920 and compared these data with information about the harvest collected in the country during their childhood (from this information one can judge how they ate in childhood). And then they studied the health of their grandchildren. It turned out that the grandchildren of well-nourished grandparents were four times more likely to develop diabetes than the grandchildren of those whose childhood was relatively hungry. In addition, they are more likely to develop heart disease. The reason for this relationship is unclear. According to all the laws of genetics, the peculiarities of the life path of grandparents cannot affect future grandchildren. Hunger or satiety in the genes are not deposited. ... >>

Jump weights 02.03.2003

In the memoirs of Baron Munchausen, a certain runner appears, usually running with a cannonball tied to his legs and slightly slowing down his too fast run. He unhooked this cargo only in case of extremely urgent parcels. A similar sport - standing long jump with two weights - existed in Ancient Greece. The athlete held lead or stone weights in each hand and waved them while jumping. This is known from surviving texts and drawings - weights were used at the first Olympic Games. But historians remained at a loss: if the competition was for the length of the jump, why were weights needed, which, it seems, could only reduce the flight range? Specialists from the University of Manchester (England), simulating such jumps on a computer and in real life - on students, showed that the weights actually increase the distance of the jump. Throwing forward while jumping hands with two "dumbbells" weighing three kilograms each, the athlete can, due to increased inertia, increase his initial speed by ... >>

Hybrid iron with vacuum cleaner 01.03.2003

In England, an iron has been patented, which can be used to iron clothes hanging vertically in the wardrobe. The built-in fan sucks fabric to an iron soleplate. Vacuum pressure improves the quality of ironing when using a new iron and in the usual way, on an ironing board. Release is expected to begin this year. ... >>

night vision of butterflies 01.03.2003

"In the dark, all cats are gray," says the proverb. This is true for humans, but not for some butterflies. As zoologists at Lund University (Sweden) have shown, certain moths can distinguish colors under illumination, which for a person is equal to complete darkness. The wine hawk distinguishes at night against the background of green foliage white and yellow flowers, the nectar of which it feeds. Experiments carried out in almost complete darkness showed that hawk moths are able to distinguish at night even shades of yellow, which are hardly distinguishable by a person in daylight. Since these butterflies are active at dusk and at night, they need such vision. ... >>

Car audio monitors the health of the driver 27.02.2003

The Japanese company Pioneer is finishing the development of a new car music system that will automatically monitor the driver's condition using special high-frequency sensors. If a person is on the verge of falling asleep, the electronic system will notice this by changing the electrocardiogram. In this case, the interior of the car will be filled with loud music. If the driver is too annoyed, the computer will turn on slow relaxing music. In mass production, such a system will go in two years. ... >>

Inkjet printers print finished electronic devices 26.02.2003

At the University of California at Berkeley (USA), a group of researchers led by D. Canny is developing a new technology for printing finished electronic devices using inkjet printers. Even now, they can print individual radio-electronic components layer by layer from polymeric materials: transistors, capacitors, inductors, etc. The next step could be making more complex devices, such as TV remote controls. Polymers with piezoelectric properties would be used to print remote control buttons. There are also no fundamental obstacles in order to make an infrared LED and other elements of the electronic circuit of the remote control from polymers, except for batteries. The advantage of the promising technology is the low cost of manufactured products, since installation work is almost completely eliminated in this case. However, there are also disadvantages. For example, polymer electronic components ... >>

The world's first maglev train 26.02.2003

China launched the world's first maglev train between Pudong Airport and downtown Shanghai. The entire journey, about 30 km long, the train overcomes in just 7 minutes. Train cars, thanks to the presence of powerful magnets under their bottom, hover at a height of 1 cm above the guide rail. Lateral stability, as well as longitudinal acceleration and braking are provided by another system of electromagnets, which are powered by powerful batteries. The entire road was built by specialists from the German company Transrapid in just 18 months. and cost the Chinese 1,5 billion dollars. ... >>

New ship mooring system with powerful electromagnets 25.02.2003

In the port of Rotterdam (Netherlands), preparations are being completed for testing a new ship mooring system using powerful electromagnets. M. Verwey and E. Victory from the Delft University of Technology have developed electromagnets, the field of which penetrates the ship's hull to a shallow depth. This eliminates the negative impact of a powerful magnetic field on people and goods sensitive to it, for example, modern electronics products. It was this circumstance that held back the development of electromagnetic mooring systems. Mooring magnets are structures made up of a large number of thin rod-shaped magnets placed in such a way that the magnetic field, due to the close location of opposite poles, is concentrated only in the immediate vicinity of the ends. The inventors are sure that their development will allow not to be afraid for the safety of cargo and onboard equipment of ships. According to the estimates of the inventors, 52 such magnets will be able even in ... >>

Elevator across the highway 24.02.2003

In Germany, on the federal highway ?132, there is an elevator across the street. It consists of two towers and a bridge between them, along which a passenger cabin runs, accommodating up to 8 people. The trajectory of the movement of the elevator car consists of two vertical and one horizontal sections. As in a conventional elevator, when moving vertically, the cabin is balanced by counterweights. Moving at a speed of 1 m/s vertically and 1,5 m/s horizontally, the elevator overcomes a four-lane road in about 30 s. In the event of a power outage, the elevator automatically switches to battery power. The indisputable advantage of the new way for pedestrians to overcome highways and other similar obstacles (railways, canals, etc.) is its increased safety, however, achieved at the cost of additional investments. Therefore, the mass introduction of new items is expected mainly in countries where human life is considered the highest value, and in the near future. ... >>

Boat jet engine on outboard water 23.02.2003

Engineers from the English company Pursuit Dynamics have developed a jet engine for small motor boats and boats that uses sea water as a working fluid. The underwater part of the system is a jet funnel with a socket at the inlet end and a narrowed nozzle at the outlet. The driving force is created by water driven through it, saturated with air in the middle part of the structure, and condensed steam, which creates pressure. The steam generator is a small boiler boiler that runs on gasoline or diesel fuel. The advantages of the new engine include the absence of moving parts, which significantly increases the reliability and durability of the motor, as well as safety and ease of manufacture. ... >>

ZL50233/4/5 - echo suppressor chip 22.02.2003

The new ZL50233/4/5 echo canceller IC from ZARLINK SEMICONDUCTOR provides up to 64ms echo cancellation on 4, 8 and 16 channels, respectively. The chips can also be configured for echo cancellation up to 128 ms. Chips allow for excellent quality of the voice signal, free from echoes, clicks and other types of interference. ... >>

HS Series LCDs 21.02.2003

SONY Corporation has released a new series of LCD displays HS. They have an exceptionally high working resolution of 1024x768 (0,7 megapixels) - HS53 and 1280x1024 (1,3 megapixels) - HS73, HS93. HS53 has a screen size of 15 inches, HS73 is 17 inches, HS93 is 19 inches. Thanks to excellent brightness (260 cd/m2) and contrast ratio (600:1), the picture on the screen is always clear and clear. The displays have a proprietary auto-adjustment feature that instantly recognizes the input signal and displays a flawless image on the screen. ... >>

Portable DVD Player SAMSUNG DVD-L100 20.02.2003

SAMSUNG ELECTRONICS launches the DVD-L100 portable DVD player, which is only 23,5 mm thick but has a 10-inch (25 cm) LCD screen with a 16:9 screen aspect ratio. The player allows you to listen to music and watch movies anywhere, because. powered by a lithium-ion battery, which is enough for 2,5 hours of continuous operation. ... >>

Programmable Frequency Synthesizer NBC12430 19.02.2003

The NBC12430 programmable frequency synthesizer was named among the new chips from ON SEMICONDUCTOR. Output frequency range from 50 to 800 MHz. The output frequency can be programmed via serial or parallel interface in steps of 250 kHz, 500 kHz, 1 MHz, 2 MHz using a 16 MHz crystal. The microcircuit does not require external attachments. Supply voltage range from 3,1 to 5,2 V. Available in PLCC-28 and LQFP-32 cases. ... >>

Chips of high-voltage DC-DC voltage converters 18.02.2003

NATIONAL SEMICONDUCTOR has released microcircuits for high-voltage DC-DC voltage converters: LM5000 with an output voltage of 3,1 to 40 V and LM5030 with an output voltage of 15 to 100 V. The maximum current in both converters can reach 2 A. The converters are available in miniature cases LLP-10, 4x4mm, designed for communication power supplies, industrial and automotive applications. ... >>

New 14-pin Flash microcontrollers 17.02.2003

MICROCHIP TECHNOLOGY announced the start of production of new 14-pin Flash microcontrollers, which include an ADC, a comparator, a precision internal oscillator and a quick start function. The memory of the PIC16F630 and PIC16F676 microcontrollers is based on the PMOS Electrically Erasable Cell (PEEC) technology, which currently provides the highest number of guaranteed erase-write cycles and high access speed. ... >>

Ultra-small mobile phone antenna 17.02.2003

MATSUSHITA Corporation announced the launch of an ultra-small EWPAD mobile phone antenna for GSM frequency bands such as 900 MHz, 1800 MHz, etc. The antenna is 50% smaller than existing models and weighs only 1,7 grams. ... >>

UV LED L2523UVC 16.02.2003

KINGBRIGHT has launched the L2523UVC UV LED. It uses an InGaN material with a SiC substrate. LEDs should replace UV lamps due to their long life and resistance to vibration and shock. The LED operates at a wavelength of 400 nm, is available in a housing with a diameter of 5 mm. ... >>

DC-DC Converter EL7566 15.02.2003

The new DC-DC converter EL7566 from INTERSIL has an operating current of up to 6 A and an efficiency of up to 96%. It works with input voltages from 3V to 6V, and its output voltage can be adjusted from 0,8V almost to the input voltage. The high clock frequency (1 MHz) allows the use of small components, so the converter, made in a 28-pin HTSSOP package, occupies only 5 cm2. The microcircuit has protection against overheating, soft start. ... >>

New Intel Pentium 4 processor 14.02.2003

Intel Corporation announced a significant improvement in the overall performance of the personal computing platform with the introduction of the new Intel Pentium 4 processor with a faster system bus and a new chipset. The new platform provides a more balanced system performance, which makes it possible to complete all operations faster and reduce data processing time. The new Intel Hyper-Threading Technology chipset for use in high-performance, feature-rich workstations and desktops introduces two technical innovations. They increase the speed of data transfer between the processor and the memory subsystem, and also double the speed at which the computer is able to transfer data over the network. ... >>

Ultra-fast thermal printer unit with USB interface 13.02.2003

FUJITSU COMPONENTS has introduced a new ultra-fast USB thermal printer unit type FTP-639USL001/002. The block is powered by 24 V, its dimensions are 136x162x107 mm, weight is 1,5 kg. Print speed 200 mm / s with a resolution of 8 dots per mm. ... >>

Miniature SMD Infrared Switch 12.02.2003

FAIRCHILD SEMICONDUCTOR has introduced a new miniature infrared switch for surface mounting QVE00033. The switch has a small footprint of 7,5x4,05x5,4mm and is ideal for applications such as drive drivers, card detectors, motor controllers, etc. A GaAs emitting LED illuminates a silicon phototransistor through a 2mm wide slit. The instrument operates at a wavelength of 940 nm. Operating temperature range from -55 to + 100°С. ... >>

B&K PRECISION Model 2650 Handheld Spectrum Analyzer 11.02.2003

B&K PRECISION has released a handheld spectrum analyzer model 2650. The measurement range reaches 3,3 GHz, which allows you to test mobile phone systems of CDMA, GSM, wireless LAN, Bluetooth standards. The device allows you to measure the spectra of electric and magnetic fields, power spectra and other parameters, has a wide range of accessories. ... >>

32-bit RISC microcontrollers 11.02.2003

ATMEL CORPORATION announced the planned start of mass production at the end of June of 32-bit RISC microcontrollers AT91RM9200-QI and AT91RM9200-CI based on the ARM920T core with a performance of 200 MIPS at 180 MHz. AT91RM9200 has built-in RAM, interface with external memory, as well as a large set of peripherals for control, communication and data storage: USB Host, Ethernet 10/100BaseT MAC, interfaces for various Flash cards, including Atmel DataFlash and others. Engineering samples of the AT91RM9200-CI in a BGA package are currently available, and engineering samples of the AT91RM9200-QI in a PQFP package are scheduled for release in late April. ... >>

ADXL311 - accelerometer chip 10.02.2003

ANALOG DEVICES has announced the release of a new ADXL311 accelerometer chip. The accelerometer measures acceleration along two axes (X and Y) in the +2g range and produces an output voltage proportional to the acceleration. Supply voltage - from 2,7 to 5,5 V, low consumption - 400 μA. The microcircuit is produced in a miniature 8-pin LCC package with dimensions of 5x5x2 mm. ... >>

Device for measuring the characteristics of dielectric and magnetic materials 09.02.2003

AGILENT TECHNOLOGIES Corporation announced the launch of the E4991A Dielectric and Magnetic Material Measurement Instrument. The device has the following features: wide measurement frequency band (from 1 MHz to 3 GHz); impedance measurement accuracy +0,8%; Windows-style interface; a large set of probes and mounts; wide temperature range - from -55 to +150°С. ... >>

man on earth 08.02.2003

As studies by an international group of scientists have shown, now 83 percent of the land surface is under the direct influence of man. Such areas were considered to be all areas where the population density is higher than one person per square kilometer, all lands occupied by cities or given over to agriculture, strips 15 kilometers wide along roads and large rivers, 2 kilometers wide. Along railroads and circles of the same radius around small settlements, as well as all places so lit that at night their light is visible from the satellite. ... >>

Hydrogen electric bus 07.02.2003

The first installation series of fuel cell buses was produced by the German company Daimler-Chrysler. Thirty buses were sold to different European cities for testing on urban routes. Such a bus carries hydrogen cylinders under a pressure of about 280 atmospheres as a fuel supply. Cylinders are placed on the roof, hydrogen is enough for 200 kilometers. The gas enters the fuel cells, where it is oxidized on the catalyst, giving electricity and clean water. The 150 horsepower electric motor allows the bus with 62 passengers to reach speeds of up to 80 kilometers per hour. In operation, a hydrogen electric bus is no different from diesel models except for noiselessness and the absence of exhaust emissions. ... >>

Sad eyes of a cow 07.02.2003

Researchers at the Agricultural University of Norway took 24 Red Norwegian cows and starved them for 7 hours. Then half of the cows were given food, and the rest were shown food. After such bullying, the mood of malnourished cows naturally worsened, and scientists were able to begin to fix signs of "grief" of ruminants. It turned out that the resentment of a hungry cow is expressed in frequent licking of the lips, shaking the head, and also in the fact that the eyes open wider than usual, which makes the whites of the eyes protrude more strongly. Apparently, wide-open eyes are a signal of the cow's psychological stress. ... >>

Bronze Age metallurgy 06.02.2003

In southern Jordan, archaeologists have unearthed a copper-smelting factory that was engulfed in an earthquake by a landslide around 2700 BC. The factory is perfectly preserved, almost like the houses of Pompeii. 70 premises - workshops are visible. In them, as far as one can understand, the work went according to the principle of the assembly line for many centuries before Ford. The production process began with the processing of copper ore and ended with the production of copper ingots, bronze axes, chisels and other products, up to bronze pins. It is believed that they were mainly exported. ... >>

Prisoners need vitamins 05.02.2003

Physiologists from Oxford University (England) conducted an experiment in prison. A group of 82 inmates were given daily multivitamins with micronutrients and supplements, while the other 90 inmates received the same-looking tablets, consisting only of chalk and sugar. It turned out that those who received the beneficial pills committed 35 percent fewer offenses and violations of the prison regime than the control group. The fortified prisoners were less likely to show aggressiveness towards their cellmates and prison staff, and behaved more calmly. ... >>

Traffic light with one lamp 04.02.2003

On US roads, a traffic light with a single lens with a diameter of 30 centimeters is being tested. The light source is an LED matrix that can represent signals of different colors and shapes. The green signal is a regular circle, yellow is a downward facing triangle, and red is an octagon with a thin white border. Various shapes allow you to quickly understand the signal even for color blind people. The traffic light can also display a green arrow on its screen indicating the direction of movement. Ready to go and portable on a tripod for installation in road worksites. ... >>

Genetic census of Estonians 03.02.2003

In the autumn of 2002, a project was launched in Estonia to study the genome of an entire nation. It is desirable that as many people in the country as possible (the population of Estonia is about 1,4 million) donate a few milliliters of blood and fill out a questionnaire with detailed questions about health, relatives and social origin. This will make it possible to form a picture of the hereditary baggage of an entire nation. Researchers hope to reveal in this way the role of genes in cancer, diabetes, Alzheimer's and other diseases. It will also be possible to predict for each participant in the survey what diseases he may fall ill with and what measures he should take in advance. Participation in the project, which is paid by the state, is absolutely voluntary. Previously, a campaign was carried out in the press. Polls showed that 61 percent of the population is well aware of the goals and objectives of the study, half of the informed agree to participate in the project, and only six percent strongly refuse. Participants have the right to ... >>

Bow without tears 03.02.2003

Japanese biochemists have uncovered the mechanism for the formation of a volatile substance that occurs when cutting onions and makes you cry. Until now, it was believed that this caustic compound is an integral part of the specific taste for which we value onions. It turned out, however, that a separate enzyme called "lacrimogenic factor synthase" by the Japanese is responsible for the production of onion "tear gas". Now, the researchers say, it will not be difficult to find the gene responsible for the formation of this enzyme, and by genetic engineering to remove or disable it. Moreover, the taste of the new onion variety will not change at all. English biologists approached the solution of the same problem in a different way. Since the corrosive gas given off by cutting onions is an organic sulfur compound, they proposed growing onions hydroponically in a nutrient solution free of sulfur. Onions are exceptionally sweet. ... >>

fragrant nests 02.02.2003

According to French ornithologists, tits living in Corsica weave aromatic plants into their nests. The most popular are lavender, mint, yarrow and lemon balm. From time to time, birds throw out dried herbs and lay fresh ones, and if sprigs of fragrant plants are deliberately removed, tits immediately bring replenishment. Scientists suggest that the phytoncides secreted by herbs kill or drive away microbes, ticks, fleas, lice and other parasites. ... >>

Peppers and bees against elephants 01.02.2003

Wild elephants in Africa raid the fields and gardens of peasants. In Botswana alone, pachyderm losses amount to one million euros annually. Barbed wire fences, electrified wire fences are used against elephants, they are scared away with torches and fires, and even snipers are hired. But these methods are too expensive, time-consuming, inefficient, dangerous for the people themselves, or too cruel to the elephants, which, in the end, are not to blame for the fact that a person deprived them of food, taking most of the savanna under their fields. Zambian biologists Loki Osborne and Guy Parker discovered that elephants can be scared away by the smoke of burning hot pepper pods. Later it turned out that the planting of cayenne pepper also works. Since the fruits of these "hedges" sell well under the brand name "elephant pepper", green protection also brings profit to the farmers. In Kenya, hives with extremely angry and poisonous African bees are being set up around plantings of corn and cassava. Frequent cases, ... >>

Wind turbines underwater 01.02.2003

The British company MCT intends to build a tidal power plant off the coast of Devon, based on engineering solutions adopted in wind energy. About a kilometer from the coast on tubular steel supports, similar to those on which offshore drilling platforms are supported. Under water, turbines with two-blade propellers with a diameter of 8 meters, similar to those used on wind turbines, should be installed. The turbine can be lifted to the surface from time to time, moving along the support, for inspection and maintenance. The power of one turbine will be 300 kilowatts, the energy will be supplied through an underwater cable. The system will have two important advantages over wind farms: firstly, due to the high density of water, its currents carry much more energy than air currents; secondly, unlike the wind, tides are quite predictable and invariably occur twice a day. ... >>

Skin graft without scars and scars 29.01.2003

R. Redmond and colleagues from the Harvard Medical School in Boston (USA) have developed a new method of skin grafting, which virtually eliminates the formation of scars and scars. The glue developed by scientists after its irradiation with a green laser beam forms a strong connection of implantable tissues. Laser radiation has a low power, so it only slightly heats the operation site and does not cause burns and other side effects. The only drawback of the new technology, which scientists are currently working on, is the relatively long time required for the operation - more than 15 minutes. ... >>

Electronic self-tuning piano 27.01.2003

Inventor from Kansas City (USA) D. Gilmore created an electronic self-tuning piano, which has no moving parts. It is based on the following physical principle: when a string is heated by an electric current, it expands, which leads to a decrease in its tension. The built-in microcomputer analyzes the string tensions and compares them with the reference ones. In the presence of errors, it supplies the appropriate control voltages to the power transistors, which regulate the strength of the current flowing through the strings, and, accordingly, the degree of their tension. ... >>

Charger for any portable devices 26.01.2003

E. Goren, CEO of Mobile Wise, showed off a new charger that can charge virtually any battery-powered portable device. The charging base has an array of closely spaced gold-plated contacts. No matter how you put the charging device on the base, its two contacts are always connected to any two contacts of the base. The microcontroller built into the base itself determines the position of the contacts and the required voltage that must be applied to recharge the batteries. Mobile Wise plans to sell the new technology not only to electronics manufacturers, but also to office furniture manufacturers. After all, with the help of the base station built into the table, you can supply power to both the lamp and the computer. ... >>

Electronics monitors the pulse and respiratory rate of patients 26.01.2003

Employees of the American company "Lucent Technologies Bell Labs" have developed a device that allows you to monitor the pulse and breathing rate of patients with heart disease in real time. The principle of operation of this device is as follows. Device sensor located a few centimeters from the patient's chest. It is connected to a mobile phone, which transmits the collected data over existing cellular networks to the nearest medical facility equipped with this measuring system. This device will be the first signs that marked the beginning of the era of mobile medicine. ... >>

Self-guided goggles 25.01.2003

Oxford professor D. Silver invented self-guided glasses that are suitable for all people without exception, suffering from poor eyesight. In order to "adjust" the glasses to a specific person, you need to press two small buttons on the temples, after which the degree of curvature of the lenses will change. According to the professor, his invention will help billions of people who cannot go to an ophthalmologist, primarily in third world countries. For example, in the African state of Ghana, there are only 20 oculists per 50 million inhabitants. The company founded by the professor has already arranged deliveries of self-focusing glasses to Africa at a price of $9. ... >>

New Optical Discs for New Generation Cell Phones 24.01.2003

Philips is developing new optical discs for next-generation cell phones with a capacity of more than 4 GB. The dimensions of the drives for such discs are comparable to the size of conventional credit cards. Since a short-wavelength blue laser beam is used for writing and reading, the thickness of the recording layer does not exceed 0,1 mm. Thanks to this, unlike conventional DVD players, read / write errors during shaking and shocks are completely excluded. The price of the novelty is still quite high (about $ 100), but with mass production it can be significantly reduced. ... >>

Subminiature Digital Camera CardCam 24.01.2003

The Singapore company "Creative Technology" has announced a subminiature digital camera "CardCam" 6 mm thick and weighing 34 g. 1,3-megapixel CMOS matrix allows "CardCam" to take pictures with a resolution of 1280x1960 or 640x480 dpi. The first in the built-in 8-megabyte memory fits 26 pieces, the second -101. Autobrite technology is used for automatic exposure adjustment. The lithium-ion battery, charged via USB, lasts for approximately 500 shots. The "CardCam" comes with a lanyard for wearing around the neck, a case and a XNUMX-meter USB cable. Creative Technology also produces a similar "Cardcam Value" camera with a lower sensor resolution and less memory. ... >>

Chips for voice echo suppression in communication channels 23.01.2003

ZARLINK SEMICONDUCTOR has released ZL50212, ZL50211, ZL50232 chips for voice echo suppression in communication channels. ZL50212 serves 288 and ZL50211 - 256 channels. Devices are priced under $1 per channel (50% less than competing devices). Chips are available in LQFP-100 or LBGA-208 packages. ... >>

New 64-bit RISC microprocessor TMPR4955BFG-300 23.01.2003

TOSHIBA ELECTRONIC COMPONENT announced the release of a new TMPR64BFG-4955 300-bit RISC microprocessor based on 0,13 micron technology. Main features of the new microprocessor: clock frequency 300 MHz; supply voltage 3,3 V, power consumption 0,6 W; associative cache memory (32 KB - instructions, 32 KB - data); there is a special node for working with floating point, fixed point and floating point operations are performed independently. The microprocessor is produced in a QFP-160 plastic case. ... >>

TG700 test modules for video test generation 22.01.2003

TEKTRONIX Corporation has released a family of test modules TG700 to generate video tests. It includes analog (AVG7) and wideband analog (AWVG7). AVG7 is a multi-format generator of test signals, drawings, texts. AWVG7 has a higher resolution. ... >>

Silicon LEDs glow 100 times brighter 20.01.2003

ST MICROELECTRONICS Corporation has developed a new technology that increases the light output of silicon LEDs by 100 times, making them competitive with traditional gallium arsenide LEDs. This will allow both optical and electronic circuits to be combined on a single chip, which has not been possible until now. To achieve this, the researchers implanted rare earth metals such as cerium, erbium and terbium into the silicon oxide layer. As a result, silicon oxide nanocrystals 1...2 nm in size were formed. The color of the emission depends on the selected rare earth metal. With the addition of cerium, the wavelength is 460 nm (blue color of the glow), with the addition of terbium - 545 mm (green color of the glow), with the addition of erbium - 1540 nm (infrared). ... >>

Plasma TVs SONY KE-42MR1 and KE-50MR1 20.01.2003

SONY has introduced two models of plasma TVs KE-42MR1 and KE-50MR1, which not only set new design standards, but also use the unique MR (Media Reality) technology. This technology delivers superior picture quality from any video source by minimizing digital to analog conversions. All-digital processing includes interlacing to progressive conversion. As a result, the picture turns out to be continuous and without notches on the contours of objects. The new microchip for controlling gas discharges significantly improved the transmission of black gradations and increased the contrast of the image. ... >>

The world's largest LCD TV 19.01.2003

SAMSUNG ELECTRONICS has released the world's largest LCD TV LW-40A13W. It has a 40-inch screen (16:9 ratio) and is as bright as most plasma displays. The number of pixels on the screen is about 3 million, which allows you to display a high-definition television picture and almost all computer formats. The screen has a high contrast ratio (600:1) and a wide viewing angle (170°). The TV includes two tuners, which allows you to get on the screen different options for "picture in picture" or just break it in half. The TV is equipped with removable flat speakers and an amplifier with an output power of 2x10 watts. In addition to 16:9, the TV also supports other aspect ratios (4:3/Wide/Zoom/Panorama). The weight of the TV with the stand is only 23,5 kg. ... >>

Sound Level Meter NOR-118 19.01.2003

SCANTEK Corporation has released the NOR-118 sound level meter, which is considered the smallest sound level meter for this purpose. Device parameters: dynamic range 120 dB; measurements in octave and one-third octave ranges in real time; there are A-, C- and Z-weighting circuits; it is possible to output data to recording devices with a resolution of at least 100 ms. ... >>

Chip SAA7133 - stereo video decoder 18.01.2003

PHILIPS SEMICONDUCTOR announced the release of stereo video decoder chips designed to enable personal computer users to receive television programs. The SAA7133 chip performs the functions of multi-standard video decoding and low-noise stereo decoding in accordance with American and Japanese standards. For use in Europe, the SAA7134 chip is intended. There are also other microcircuits of this family with the functions of a mono decoder, a Dolby decoder, etc. ... >>

NLSF595 Tricolor LED Drivers 18.01.2003

ON SEMICONDUCTOR has developed a new type of integrated circuit - NLSF595 tricolor LED drivers. The microcircuit is a shift register with outputs in the form of open-collector transistors, to which LEDs are connected through resistors. The microcircuit is designed to interact with the microprocessor. Microchips can be scaled up. Each of the microcircuits has 8 outputs, therefore, two microcircuits can control 5 three-color LEDs. ... >>

LP3883 CMOS Voltage Regulator 17.01.2003

NATIONAL SEMICONDUCTOR has released the world's first LP3883 CMOS voltage regulator with a very low voltage drop across it (450 mV). The regulator allows you to convert the input voltage in the range of 1,8 ... 2,5 V into an output voltage of 1,2, 1,5 or 1,8 V at a current of 3 A and with an output accuracy of + 3% in the temperature and load range. There is an external shutdown mode with a current consumption of only 3 mA. There is protection against short circuit and overheating. Regulators are available in 5-pin packages TO-220 or TO-263. ... >>

Microwire EEPROMs 17.01.2003

One of the latest developments of MICROCHIP TECHNOLOGY is reprogrammable ROM (EEPROM) of the Microwire series. Their peculiarity lies in their placement in a miniature 6-pin SOT-23 package (2,7x1,5x1 mm). Chips 93xx46, 93xx56 and 93xx66 with suffix A are designed for 8-bit words, with suffix B - for 16-bit words. Memory capacity from 1K to 4K. Input and output of data is performed via a 2-wire serial data bus. ... >>

BM-ET500 Iris Identification System 16.01.2003

PANASONIC launched the BM-ET500 Iris Access Control System. At the same time, one glance into the camera lens is enough for the user. Advantages of the system: there is no need for identification cards and passwords; the system is easily adaptable to any number of users whose iris samples are stored in memory, which is very convenient for large enterprises; it is impossible to fake the drawing of the iris, in this regard, the probability of an error in the system is less than one millionth; there is no physical contact during identification. ... >>

LTC5508 Subminiature Broadband Power Detector 16.01.2003

LINEAR TECHNOLOGY has released the LTC5508 subminiature wideband power detector for operation in the frequency range from 300 MHz to 7 GHz. The temperature-compensated Schottky diode peak detector and buffer amplifier are housed in a 6-pin 70x1,2mm SC2 package. The microcircuit has a large dynamic range of input signals - from -32 dBm to +12 dBm. It works at supply voltages from 2,7 to 6 V, consumes a small current - 550 μA. There is a shutdown mode by an external signal, in which the current consumption is reduced to 2 μA. ... >>

KA-4040 SMD LEDs 15.01.2003

KINGBRIGHT launched the KA-4040 series of white 4x4mm surface mount LEDs with built-in reflector. Typical LED brightness is 120 mcd at 20 mA. The main purpose of LEDs is to illuminate liquid crystal displays. For this purpose, the design of the LEDs provides radiation at an angle of 90° with respect to the mounting plane. In addition to white LEDs, LEDs with a different glow color are also available in the wavelength range from 430 to 700 nm. ... >>

Drivers for switching white LEDs EL7513 15.01.2003

INTERSIL announced the release of the original driver for switching white LEDs EL7513. The driver is powered by a voltage of 2,6 to 5,5 V, but provides a voltage of up to 18 V at the load and can operate up to 12 LEDs. The brightness of the LEDs is controlled by an external PWM signal. One of the LED switching circuits is shown in the figure. The microcircuit is produced in a miniature 8-pin SOT-23 package. ... >>

Ultra-fast rectifier modules UFB60FA40 14.01.2003

INTERNATIONAL RECTIFIER has announced the release of the new UFB60FA40 ultra-fast rectifier modules, which include two completely independent diodes. The SOT-223 package provides isolation between diodes of 2500 V. Diodes allow reverse voltage up to 400 V. Continuous current up to 30 A (pulse up to 250 A), maximum power dissipation up to 64 W. The recovery time of rectifiers for the current limit is 67 ns (for a current of 1 A 32 ns), at a temperature of + 125 ° C at a current limit of 120 ns. ... >>

Servers based on new processors and chipsets at 533 MHz 14.01.2003

INTEL Corporation has announced the release of a series of new servers based on new processors and chipsets to work with 533 MHz buses. The series includes server boards SE7501HG2, SE7501WV2, SE7501BR2, and SE7501CW2 for the 7501 chipset. In addition, the server board SE7501VB2 is designed for the 7505 chipset. They are all branded under the Xeon brand. ... >>

New family of electromechanical relays FTR-MY 13.01.2003

FUJITSU COMPONENTS has launched a new family of FTR-MY electromechanical relays. The relays are rated for DC voltages from 4,5 to 24 V, but can switch currents up to 5 A at AC voltages up to 250 V. The relays are available in 5x12x20 mm cases and weigh only 2,5 g. They are rated for 20 million. positives. ... >>

Series of blue LEDs 12.01.2003

FAIRCHILD SEMICONDUCTOR has launched a new series of blue color SMD LEDs QTLP610C, QTLP611C (rectangular) and QTLP601C (low profile). LEDs have a forward voltage drop in the range of 2,75 to 3,15 V and are designed for backlighting in LCD displays. Current consumption 5 mA, glow angle from 100 to 130 degrees. LED dimensions 1,6x0,8x0,6 mm. ... >>

PK2 Pocket Digital Strobe Light 12.01.2003

ELECTROMATIC EQUIPMENT's PK2 Pocket Digital Strobe Light operates at a flash intensity of up to 800 lux and a flash rate of up to 12500 flashes/min. The internal nickel-metal hydride battery provides an hour of continuous operation of the device at any flash frequency. The accuracy of the device is one sign of the least significant digit. ... >>

Acid battery capacity analyzer 11.01.2003

To analyze the capacity of acid car batteries, B&K PRECISION has released a pocket device Model 600. The device shows the capacity of the battery at the moment as a percentage of the maximum. Measurement duration 6 s. The instrument is powered by the battery being measured. Device dimensions 7,5x15x4 cm. ... >>

Microcontroller ATmega169 11.01.2003

ATMEL CORPORATION has announced the availability of technical information for the new ATmega169 microcontroller for wearable applications with an integrated LCD controller. The ATmega169 has a built-in interface for in-circuit application debugging. In addition, ATmega169 has 16K flash memory, 1K ROM, 512 bytes PROM, 8-channel 10-bit ADC. 4x25 segment LCD driver is supported. ... >>

Voltage regulator ADM8839 10.01.2003

ANALOG DEVICES has announced the release of the ADM5 voltage regulator with +15 V, +15 V and -8839 V outputs, designed specifically for powering color LCD displays. The power supply is one +3 V. The stabilizer voltages are used as follows: +5 V - to power the display controller, +15 V - for the panel transistors. Output currents: 5 mA - for +5 V output and 100 μA each - for + 15 V and -15 V outputs. Efficiency of the microcircuit is 83%, conversion frequency is 100 kHz. The chip is available in a 20-pin LFCSP package. ... >>

CMOS image sensors 09.01.2003

AGILENT TECHNOLOGIES releases new CMOS image sensors containing a high sensitivity, low current photodiode array with built-in A/D conversion. They are in VGA (640x480 pixels) format - ADCS-2021 or CIF (352x288 pixels) - ADCS1021. Combined with image processors, they provide a complete imaging system for digital cameras, computer cameras, cell phones, toys, and more. ... >>

Chip (three-phase electricity meter) ADE7752 09.01.2003

The ADE7752, which until recently was only available as test samples, is now in production by Analog Devices and available for order. It is a low-cost, high-precision power measurement system implemented on a single chip. This chip allows you to create on its basis high-quality inexpensive industrial and household three-phase electricity meters. Being a three-phase version of the famous and popular ADE7755 chip, it allows you to create devices with a minimum number of additional external components. In addition, it has specialized outputs for connection to low-cost electromagnetically driven mechanical readouts. The combination of these capabilities allows us to recommend its use for the development of a new generation of electricity metering devices, as well as distributed energy consumption metering systems. ... >>

New dedicated capacitance meter 09.01.2003

QuadTech specialists, formerly GenRad (USA), have developed a new capacitance meter Capacitance Meter 1930, which supplemented the 1900 series of professional immittance meters. This device is optimized for automatic measurement of a wide range of parameters of capacitors of various types, including tantalum. The main advantage of the new device is its ability to measure small values ​​(of the order of microohms) of the equivalent loss resistance in a series equivalent circuit (Equivalent Series Resistance - ESR). The basic error of the instrument is 0,1%. It allows you to measure a total of 20 parameters of capacitance (0,01 pF...10 F), resistance (0,1 μOhm...100 MΩ), inductance (0,001 nH...100 H), dielectric loss tangent, quality factor of the phase angle, etc. At the same time, the values ​​of any two measured values ​​can be simultaneously displayed on its display, including the test voltage and current. ... >>

DVD or FMD ROM 08.01.2003

Will FMD ROM outperform DVD in terms of parameters? The first parameter is the size/capacity ratio. Here "fluorescent multilayer disk" is beyond competition. The developers claim that even now the first prototypes can accommodate up to 12 GB with a disk size of 5 cm in diameter, that is, on a standard 140-inch drive. This is ten layers. And in the nearest plans of the C3D company there is a desire to at least tenfold the number of layers. At the same time, the possibility of creating removable storage media with a capacity of tens of terabytes becomes quite real. The capacity that today can only be obtained using huge disk arrays, sometimes occupying entire cabinets and even rooms, will be provided by a compact disk that easily fits in your pocket! As for the access speed, there is still very little data. The developers promise that this parameter will be much higher than that of DVD. Otherwise, with existing speeds, when working with terabyte arrays of information, even simple operations, for example ... >>

Accumulators of the third millennium 08.01.2003

Relatively recently, C3D announced the creation of a new type of storage media under the general name FMD ROM (fluorescent multilayer disk), that is, a fluorescent multilayer disk. This promising development, as expected by its creators, should, after its release, replace all currently existing storage devices, not only outdated CD-ROMs, but also relatively new DVD-ROMs. Magnetic disks have existed for more than thirty years, CD-ROMs for a little less than twenty, the CD has most recently been replaced by the DVD standard, and in less than three years, the successor to DVD has appeared. Yes, DVD, which is by far the most capacious removable media of digital information. And in the near future, it will yield in all respects to the new FMD ROM media standard. ... >>

frog paradise 07.01.2003

In the tropical forest on the island of Sri Lanka, zoologists have found 120 new species of frogs at once. They crowded into an area of ​​750 square kilometers, as over the past decades, 95 percent of the jungle on the island has been cut down. New species differ from the known ones in appearance, hereditary information and behavior, as well as in voice - each species croaks in its own way. Most of the new species do not lay their eggs in water, but in moist places on land, such as in a layer of fallen leaves. Accordingly, not tadpoles emerge from the eggs, but small frogs immediately. The reasons for such a diversity of frog fauna on a small island remain a mystery. ... >>

Restored the spirits of the pharaohs 07.01.2003

French perfumers, working in collaboration with archaeologists and historians, managed to restore the Kifi perfume used by the Egyptian pharaohs. To do this, the specialists of the company "Loreal" had to use bottles with dried up remains of incense stored in museums, decoding of ancient Egyptian documents, as well as the works of Plutarch and other scientists of antiquity. The recipes were different: some used only 10 ingredients, others up to 50. Among the ingredients are pistachios, mint, frankincense, cinnamon, myrrh, juniper and hemp. The latter circumstance makes it impossible to produce and distribute "Kifi" - ancient Egyptian perfumes in our time would be equated with drugs. By the way, Plutarch mentions that from the smell of "Kifi" a person falls asleep and sees pleasant dreams. However, the authors of the reconstruction say that such perfumes would hardly be successful now: the modern public would consider their smell too piercing and intrusive. ... >>

solar phone 06.01.2003

The Swiss company "Rotronik" offers to carry in your pocket along with a mobile phone a folding solar battery weighing 150 grams. When folded, it looks like a leather wallet. When open, on a clear day, the battery delivers about five volts, enough to recharge the phone's battery. Charging continues, depending on the phone model, from two to four hours. The operating temperature range is from frost at minus 10 degrees to African plus 60. ... >>

Nanotube yarn 06.01.2003

A few years ago, physicists learned how to make hollow tubes of submicron diameter from carbon atoms. They are distinguished by high strength, but it was impossible to apply this property of carbon tubes anywhere, since their length was only fractions of a millimeter. Now, Chinese scientists at Jinhua University have accidentally found a way to make long filaments from nanotubes. Having synthesized a pack of such tubes, they tried to pick up this pack with a thin needle under the objective of the Alektron microscope. But behind the needle stretched a thread of tubules linked by electrostatic van der Waals forces acting between individual atoms. The thickness of each tube is 3 nanometers, that is, only 10 times the diameter of a hydrogen atom. This method, similar to the unwinding of silkworm cocoons, can produce heavy-duty threads one-tenth of a millimeter thick and up to 100 centimeters long. Heat treatment of the threads makes it possible to further increase their tensile strength by more than an hour. ... >>

soil radar 05.01.2003

A group of Mexican scientists led by Claudia Oleshko uses a radar to measure soil porosity. The radar beam penetrates the ground to a depth of 10 meters, and by its reflection, soil scientists determine the structure of the soil, the size of soil particles and the pores between them. Knowing this is necessary for the correct selection of crops for each type of soil. The study of soil structure in a field the size of one tenth of a hectare took half an hour. It takes only a few months to get the same data using the old methods. ... >>

Sauerkraut as a cure for cancer 05.01.2003

Until now, doctors could recommend sauerkraut only as a generally available source of vitamins for the winter period. Now Finnish specialists from the Research Center of the Ministry of Agriculture have discovered that so-called isothiocyanates appear when sauerkraut is sauerkraut. They inhibit the division of malignant cells, especially in tumors of the breast, lungs, liver and intestines. So far, this has been proven only in animal experiments, but there is reason to think that isothiocyanates act in the same way on humans. Thus, according to American statistics, women of Polish nationality living in the United States are more likely to get breast cancer than their compatriots at home. It is believed that this is due to sauerkraut, which is not very popular in America, but is one of the favorite components of Polish national cuisine (have you ever tried real Polish bigos?). Finnish scientists hope to change the fermentation process in such a way that the concentration of isothiocyanates in the final product is even higher ... >>

Pocket cinema 04.01.2003

This year, the US should begin production of a pocket device that stores up to a hundred hours of movies copied into the device's memory from the Internet or from video discs. They can be viewed on a screen with a diagonal of 10 centimeters. The prototype of the pocket cinema was developed by Intel. The manufacturer has not yet been named, but it is already known that the cost of the device will be about $400. ... >>

Trusting on the Internet is easier 03.01.2003

The prevalence of the Internet in a particular country is usually associated with the number of personal computers, the level of education and the level of income of the population. But the American sociologist Jonathan Leland found a correlation with an unexpected factor: the degree of trust in people. He compared data on the number of households connected to the Internet in 17 countries with the number of positive answers to the question "Do you think people are generally trustworthy?" The question was included in the questionnaire of an international psychological survey conducted several years ago and aimed at identifying the basic life values ​​among different peoples. It turned out that almost two-thirds of the differences in the prevalence of the Internet are explained by this factor - the degree of trust in people. Among the most "gullible" countries, the authors of the study name Norway, as an example of "distrustful" - Brazil. Even if the methods of statistical processing eliminate the influence of other factors, such as the number of computers in ... >>

crab toothpaste 03.01.2003

Specialists from the University of Portsmouth (UK) have developed a new toothpaste that sticks to the teeth. Microscopic capsules filled with a disinfectant antimicrobial agent - triclosan are mixed into the main substance of the paste. Gradually breaking down, they release triclosan on the tooth enamel, killing the microorganisms that cause caries. In order to keep the effect of brushing your teeth as long as possible, it was important to choose a material for the microcapsules so that they firmly adhere to the teeth. Of the proposed options, chitosan turned out to be the best. This is a derivative of chitin, which is used in the shells of crabs, crayfish, lobsters, shrimp and other crustaceans. Thousands of tons of chitin annually go to waste after processing these seafood. The production of paste with chitosan will start in 2003. ... >>

Children and noise 02.01.2003

Recently in Munich (Germany) the old airport was closed and at the same time a new one was opened in another part of the city. This case was used by psychologists in order to identify the impact of noise from jet liners on the mental activity of children. We studied 326 children with an average age of 10 living near the old and new airports. Six months before the airport moved to a new location and six months after the move, the children's ability to read, remember what they read, comprehend speech and concentrate was tested. It turned out that prolonged exposure to noise significantly worsens these indicators. One consolation: six months after the roar of jet engines stopped, the children freed from it caught up with their peers in their abilities. ... >>

Tail for a swimmer 02.01.2003

Swimmers have been using fins for a long time, and now people have borrowed a wide tail that is comfortable for swimming from pinnipeds. The fashion to swim with a wide spade-shaped fin worn on the legs originated in the United States and is spreading around the world. The fin is made of sheet plastic, and the latest models use thin and light, but very strong carbon fiber. With such a tail, a swimmer reaches speeds of up to 13 kilometers per hour. A snorkel diver, having once inhaled air on the surface, swims with such equipment under water up to 150 meters. ... >>

inflatable oven 01.01.2003

The American company Soltac has released an inflatable solar oven. It is a "bubble" of aluminized polyester film which, when inflated, takes the form of a parabolic solar collector. A cauldron with a volume of one and a half liters, placed in focus, boils in an hour and a half in the middle latitudes - of course, only on a sunny day. A special black pot with a Teflon coating inside is attached to the stove, in which the whole structure is packed when carried. ... >>

Car in ceramic armor 01.01.2003

Researchers at the Institute for New Materials in Saarbrücken (Germany) have developed the first scratch-resistant varnish for cars. For this, nanotechnology methods were used. A layer of ceramic particles is applied to a metal sheet, each of which is 4000 times thinner than a human hair. The thickness of the layer is only one hundredth of a millimeter, but under its protection, the lacquer coating of the car becomes almost as hard as the mineral glass used in modern wristwatches. In any case, a steel wire washcloth does not take it. ... >>

Singing cork protects against forgery 31.12.2002

The Russian electronic enterprise "Angstrem" from the city of Zelenograd near Moscow has created a unique technology of protection against counterfeiting of alcoholic beverages. "Singing plug" contains a microelectronic chip with a memory unit, a battery and a miniature musical synthesizer. All this is mounted in a standard bottle cap. The operation for its installation is technologically advanced and does not require additional production costs. Counterfeit products are excluded, since when the cork is opened, the module is completely destroyed. The new technology can also be used to protect other products from forgery: candy sets, gift editions, valuables. ... >>

Air oven cooks food 30.12.2002

The Scottish inventor S. Morrison, using the technology used for drying clothes, invented a new, air oven for cooking. The crude product is loaded into a ceramic drum which rotates inside another drum. The larger drum heats up while the smaller one cooks food. Salt, spices and oil are added to taste. Morrison's invention is recommended for industrial production. ... >>

Biobattery is implanted under the skin 28.12.2002

A. Heller from the University of Texas has developed a "biobattery" - a miniature device that is implanted under the skin or in the spinal canal and receives electricity due to the oxidation of glucose directly in the body. The energy generated by this battery is enough to power sensors such as blood sugar levels. The battery consists of two electrodes - fibers 2 cm long and 7 microns thick. One of the fibers, coated with a special polymeric material, carries on the surface molecules of glucose oxidase, an enzyme that catalyzes the oxidation of glucose. The polymer coating provides contact between the enzyme molecules and the fiber, as well as the “draining” of electrons onto it. The other fiber contains molecules of another enzyme attached, which donates electrons to oxygen atoms. Thus, an electron density gradient is formed between the two fibers, which makes it possible to obtain an electric current. The power of such a battery is about 2 μW, which is approximately ... >>

Data is transmitted at the time of the handshake 27.12.2002

The Japanese company "NTT DoCoMo" has developed a system that allows you to transfer data at speeds up to 10 Mbps between two portable computers at the moment when their owners shake hands. The operation of this system, which, unlike wireless data transmission technologies, is much better protected from unauthorized retrieval of information, is possible due to the fact that human skin has relatively good conductivity. Another possible application of the novelty could be its use for automatic identification of a person, for example, when touching a doorknob or a computer keyboard. ... >>

longest suspension bridge 26.12.2002

The Italian government has approved the project of the world's longest suspension bridge, which should connect the island of Sicily with the mainland. The width of the Strait of Messina, over which the bridge will pass, exceeds 3 km. In addition, it will be located in a seismically active area, which creates additional difficulties for designers and builders. The uniqueness of the bridge canvas lies in its profile, which resembles the profile of a bird's wing. This is done in order to meet the requirements of lightness, strength and good aerodynamics of the main span 3,3 km long. It will be supported by strong steel cables attached to huge pylons located on the banks of the strait. Construction will take about 10 years and will cost Italian taxpayers more than $4 billion. ... >>

It will be easier to understand the lecturer 24.12.2002

The Japanese corporation "JVC" introduced a radio receiver that automatically corrects the diction of the presenters and makes their speech more measured. The development is focused primarily on older people who do not have time to perceive too fast speech. The speaker's voice is recorded on a semiconductor integrated circuit, where it undergoes fast processing: pauses are removed, due to which the words are slightly stretched. At the same time, as far as possible, "eaten" endings, hesitation and other inaccuracies are corrected. ... >>

Light switch without wires 23.12.2002

The German company "EnIcean" is developing fundamentally new light switches that can be mounted in any convenient place. At the same time, you do not need to pull wires to them or supply them with batteries. When such a switch is pressed in a circuit connected to a piezoelectric crystal, a current pulse appears, which powers a miniature radio transmitter. Each light source is equipped with a built-in microswitch that is triggered by receiving the appropriate coded radio signals to turn it on or off. The range of the system reaches 300 meters, and the number of independent codes exceeds 1000. The company plans to develop battery-free key fobs of security alarm systems and air pressure sensors in car tires. ... >>

Mailbox kills germs 22.12.2002

After last year's anthrax story, many Americans approach their mailboxes with trepidation. Inventor Fritz Braun from Florida intends to save them from fear. He created a small firm that builds three ultraviolet lamps of the type used to sterilize surgical sutures and dressings into the standard mailboxes that stand on the side of the road at every American home. Ultraviolet not only kills all microorganisms on the surface of the envelopes, but also generates ozone, which, penetrating through the paper, disinfects anthrax spores in 6 hours (the experiments were carried out in one of the laboratories in Brazil - apparently, there were no people willing to take risks in the USA). If the Postal Service approves the design, the anti-terrorism mailboxes will go on sale for $300 to $400 each. ... >>

Grapes with milk 20.12.2002

Powdery mildew is a fungal disease of grapes that affects vines throughout the world. To combat it, vineyards are sprayed with fungicides that are not indifferent to human health and affect the taste of wine. Peter Crisp of the University of Adelaide (Australia), studying folk remedies for powdery mildew, found that some growers use a spray of diluted milk. Experiments have shown that the fungus is really afraid of milk. Why is unclear, but Crisp suggests that the proteins and fats of milk, having fallen on the leaves and berries, give food to some kind of microbes, which, multiplying, at the same time eat the fungus. ... >>

Oat gold 19.12.2002

Some modern microcircuits require ultramicroscopic "plaques" of gold with a diameter of millionths of a millimeter. They are made laborious and expensive by physical and chemical methods. As Mexican, Argentinean and American researchers have shown, such gold particles accumulate in the cells of some plants if they are grown on soil enriched with this metal, for example, on rock heaps processed by gold miners. The first experiments were carried out on alfalfa, wheat and oats, and it was oats that gave the best results. Special solvents are used to isolate gold particles from plants. Scientists hope to obtain microparticles of silver, palladium, europium and iron in the same way - also for use in microelectronics. ... >>

Doctor's visit 18.12.2002

According to a statistical survey published in the Journal of the American Medical Association, female doctors stay at the bedside 10 percent longer than men (23 minutes instead of 21). In addition, the manner of their conversation with the patient is more emotional and takes into account the psychology of the patient more. During a conversation, women smile more than men, nod, listen more readily to statements that are not related to the diagnosis, and ask such questions themselves only to distract the patient from thoughts about the disease and somehow cheer up. True, the long-term results of treatment for both male and female doctors are the same: apparently, American doctors know their business regardless of gender. ... >>

Eyes heal with light 17.12.2002

As you know, having treated yourself to methyl alcohol, you can go blind: unlike ethyl alcohol, methyl alcohol is converted in the body into formic acid, which destroys retinal cells. The Wisconsin Medical College (USA) has found a way to prevent blindness from methyl alcohol. Rats given large doses of this substance go blind in one to two days. But if twice - after 5 and 50 hours after the introduction of alcohol - to illuminate the eyes of the affected rat with infrared light with a wavelength of 670 nanometers, vision is restored by 95 percent. Retinal cells regenerate. It is believed that some other eye injuries, such as blinding by a laser beam, can be treated in this way. ... >>

bulletproof teeth 16.12.2002

Siram Ramakrishna, professor of materials science at the University of Singapore, suggests making dental fillings, false teeth and complete dentures from a composite material used in modern tank armor and bulletproof vests. Composed of carbon fibers, fiberglass and a special polymer, this material is both strong and flexible. ... >>

record probe 14.12.2002

The largest probe balloon with a volume of 1,7 million cubic meters was launched by Canadian scientists on August 25 this year. It carried 690 kilograms of instruments for studying the Sun and the solar wind. During the flight, which lasted about 23 hours, the balloon reached a height of 49 kilometers. Instruments with accumulated data descended to the ground by parachute. Until now, the largest balls were 1,4 million cubic meters. ... >>

Seal in touch 13.12.2002

Unlike the hero of the "Telephone" Chukovsky, the staff of the University of St. Andrew (Scotland) are happy when another seal calls them. They glue miniature radio beacons provided by the German company Siemens to the fur of newborn seals. The device, which works through the cellular telephony network, from time to time sends messages about the activity of the seal to the university computer. If there are no messages for several days, the animal is considered dead. Of the approximately 38 gray seals born every November in colonies of these mammals on the coast of Britain, only half survive to their first birthday, but there is no exact data yet. In the future, scientists intend to add a depth gauge and a positioning device to a simple motion sensor in radio beacons in order to accurately record migration routes and the depth at which animals hunt. The device stays on the skin of a seal for no more than a year and disappears during the next molt. ... >>

Wheel instead of gateway 12.12.2002

Two navigable channels passing through Scotland are separated by a difference in water level of 33 meters. In order to allow ships to move from one channel to another, it was decided instead of locks, which take up a lot of space and require a long locking process, to build a kind of rotating elevator. For four years, two huge wheels with a diameter of 35 meters were erected between the canals, on each of which two "baths" for ships were fixed. Each "bath" holds 300 cubic meters of water and a ship with a carrying capacity of up to 600 tons. Turning the wheel takes less than 5 minutes - and the two channels exchanged ships. Loading and unloading "cradles" lasts approximately 15 minutes. Previously, a system of 11 locks operated here. Now the journey from Glasgow to Edinburgh has been shortened by a few hours. ... >>

Viruses in mineral water 11.12.2002

Swiss ecologist Christian Bere, after analyzing samples of mineral water from 29 sources in Western Europe, found in 11 of them a highly infectious virus that causes nausea and intestinal upset. Where viruses get into the water is unclear: either sewage seeps into aquifers underground, or the bottling is not hygienic enough. Repeated analysis in an independent laboratory gave the same result. Mineral water producers criticize this study and accuse Bere of contaminated samples in his laboratory due to careless analysis. ... >>

Do athletes need warm-ups? 09.12.2002

All sports doctors and coaches unanimously say that before starting physical education, you should warm up well so as not to overwork, stretch or tear your muscles. But Australian scientists from the University of Sydney do not believe that there is any serious scientific evidence for the usefulness of the warm-up. They found, for example, that warm-up forward bends did not prevent muscle soreness after competition or reduce the risk of injury, although why this happens is not yet clear. Asking 77 volunteers to perform simple calisthenics exercises with or without pre-warm-up, the researchers found that the warm-up does not bring tangible benefits and does not contribute to the prevention of muscle pain. Perhaps the picture will look different if you examine professional athletes who are used to warming up before each workout. As is known, the mechanical properties of human and animal muscle tissues are very complex. ... >>

Parachute for the whole plane 07.12.2002

Aircraft parachutes, however, only for small light aircraft, are produced by the American company BRS. There are many circumstances under which an aircraft may need a parachute. For example, a mid-air collision between two light aircraft, loss of control, a heart attack in the pilot, engine failure over terrain completely unsuitable for a normal landing, or at night when it is impossible to choose a suitable place ... In case of danger, the pilot or passenger presses the handle, and the rocket pulls the parachute out of the package fixed at the top of the fuselage. The plane slowly descends to the ground. The largest of the produced models has an umbrella with a diameter of 17 meters, weighs 27 kilograms and is able to save an aircraft with a total weight of 1,5 tons (but the slings can withstand breaking even 6 tons). Rescue can be carried out at speeds up to 250 kilometers per hour. According to the manufacturer, the landing shock is three times weaker than what a person can withstand, according to medical data. To the present ... >>

Synthesized lubrication for joints 05.12.2002

Scientists from the Massachusetts Institute of Technology (USA) have learned how to grow cartilage in order to replace the cartilage layer in the joints with a new "lubricant", which is worn out in some diseases. There are practically no blood vessels or nerves in the cartilage, so it does not regenerate. Cartilage cells are placed on a temporary frame made of the thinnest threads of a special biopolymer and begin to multiply. A piece of the grown tissue is transplanted through a small hole into the diseased joint, soon the biopolymer dissolves, and the cartilage spreads to the rubbing surfaces. It is believed that in the same way it will be possible to grow shark cartilage in the laboratory, for which (although its use as a medicine is very doubtful) poachers kill up to 300 thousand sharks every month. ... >>

allergy to money 04.12.2002

Studies conducted by dermatologists from the University of Zurich Hospital (Switzerland) in collaboration with metallurgists have shown that coins of one and two euros, when they are held in a sweaty hand, emit a lot of nickel. The reason is that the coins are made from two different alloys: the middle is silver and the rim is yellow. In a sweaty palm, such a coin acts like an electric battery, where sweat acts as an electrolyte. The resulting weak electric current drives the nickel ions out. There are more of them than if a person held an ingot of pure nickel in his hand. Meanwhile, 10 percent of the population is allergic to nickel. The concentration of metal ions on the skin after prolonged contact with coins can be 250 - 300 times higher than the allowable one. True, dermatologists point out that coins rarely stay in the hand long enough. More dangerous in this regard would be a metal object that is in contact with the skin for a long time, such as a watch. ... >>

Snails will eat England 02.12.2002

Biologist Claire Andrews from the University of Sussex (UK) discovered that Patella vulgata snails living on the chalk cliffs of Dover are gradually eating up the coast of England. Clinging to the rock, they scrape off microscopic algae from it, which they feed on. However, along with the algae, the mollusks also scrape off some soft limestone. Three-year observations of snails have shown that up to 30 percent of coastal erosion can be attributed to these seemingly harmless creatures. Note that the county of Sussex annually spends millions of pounds to combat coastal erosion. ... >>

Red wine keeps colds at bay 01.12.2002

It is known that regular consumption of red wine contributes to the prevention of cardiovascular diseases. Spanish researchers have found that wine also protects against colds. Scientists from five universities in Spain conducted long-term studies on four thousand volunteers. Result: people who drink two glasses of dry red wine a day are 1,8 times less likely to get colds than those who do not drink wine. A noticeable effect comes from one glass of wine a day, scientists report. They believe it's the antioxidants in red wine. By the way, beer and vodka do not protect against colds. ... >>

Beam drills concrete 30.11.2002

Professor Eli Jerby and his colleagues at Tel Aviv University in Israel have created a ray gun that uses microwaves to make holes in concrete, rock or glass. The gun focuses microwave radiation at some depth within the material to be drilled. The material softens, so the tip of the drill can easily pass into it, forming a hole. Unlike mechanical drills, microwave drills do not have any rapidly rotating parts and at the same time do not create mechanical friction, and therefore no dust. On the other hand, the novelty has one drawback - dangerous radiation, which requires security measures. ... >>

Chips help assemble furniture 29.11.2002

Firm "Ikea" produces prefabricated cabinets with "checking" microcircuits. Six motion and pressure sensors are built into each wall of such a cabinet, connected to a microcircuit, which is also built into one of the walls. If the person assembling the cabinet mounts something incorrectly, the sensors detect it, and the microcircuit sends a warning signal to the screen of a special monitor. The device runs on batteries and is activated by light, that is, only when all parts are removed from the boxes. This eliminates the unnecessary consumption of battery power during the pre-sale storage of furniture. ... >>

Sharing scents with mobile phones 27.11.2002

The Scottish company "Electronic Aromas" is developing a new technology that will help mobile phone subscribers to share scents. Phones will be equipped with special cassettes with a standard set of flavors, the combination of which imitates the required smells. The codes of this or that aroma will be transmitted over the radio channel and initiate the corresponding smells on the receiving side. ... >>

Charge your phone on the street 26.11.2002

Nearplay Systems has begun installing "Charge Me" automatic booths on the streets of London to recharge mobile phones. For £1, you can charge your phone for 45 minutes of talk time, which will take about 10 minutes. The booths are equipped with sockets for connecting Nokia, Ericsson, Motorola, Siemens, Sony, Samsung phones, as well as Palm handhelds. One booth "Charge Me" can simultaneously recharge up to twelve devices. ... >>

dog cell phone 25.11.2002

Specialists of the companies "Benefon", "Arbonaut" and "Pointer Solutions" have created an original device - a dog mobile phone ("Pointer dog-GPS"). It consists of two parts. The main part is a modified "Benefon" dual-band GSM phone with a built-in 12-channel GPS receiver, which allows you to download maps, record driving routes, send a distress signal with accurate coordinates, and communicate with 30 similar devices. The second part is attached to a dog collar equipped with reflective elements. If the hunt takes place in the coverage area of ​​the GSM operator, the hunter can connect to the microphone carried by the dog. ... >>

Stereo image without glasses 23.11.2002

The Japanese company "Sanyo Electric" has developed a system for creating a stereoscopic image that does not require the use of special glasses and other aids. The stereo effect is achieved by placing two panels in front of a plasma or liquid crystal display, which display a different image for the left and right eyes. To see a stereoscopic image, viewers must be between 1,5 and 5 meters away from the screen. Sanyo plans to use the new technology in the manufacture of 50-inch plasma stereo screens. ... >>

Glasses clean themselves 22.11.2002

Pilkington engineers have created so-called self-cleaning glasses that do not require any human care at all. The new glasses are based on a special titanium dioxide coating with a thickness of only 0,04 microns, which has two very important properties. Firstly, thanks to it, under the influence of ultraviolet radiation, organic substances that fall on the glass are split. Secondly, the coating does not allow rainwater to collect in drops: the water flows off it in a continuous stream, washing away the accumulated dust and dirt. ... >>

Individual beacon to rescue the victim 21.11.2002

In the United States, the Sea Marshall device has gone on sale, designed for individual rescue in emergency situations, for example, in case of an accident at sea. A beacon weighing about 150 grams and the size of a pack of cigarettes is hung around the neck, for which there is a flexible transparent tube, which is a bright electroluminescent lamp. To report a distress signal on the international frequency of 121,5 MHz, the user of the device just needs to press a button. The beacon also turns on from contact with water for 20 s. An ordinary lithium battery with a voltage of 9 V is enough for 20...30 hours of continuous operation of the beacon. The device costs about 170 USD. ... >>

How to protect your mobile phone from theft 20.11.2002

All over the world, the problem of protecting mobile phones from theft remains very relevant, for which several methods have been proposed. So, the British company "Allied Commercial Developments" has created a device called "Kobra", which is mounted under the rear panel of the handset and fits 80% of models of modern devices. A pin is inserted into a special connector, similar to a grenade pin. The pin is tied to the strap, and that - to the wrist, case or belt of the owner. When you try to steal the device, the pin is released, and after a few seconds, a sound signal is heard with a strength of 120 ... 140 dB, which exceeds the pain threshold of human hearing. It will not be easy for a thief to escape with such a squealing mobile phone. Another group of researchers from the University of California (USA) has found a way to blow up silicon chips by a special electrical signal sent if the phone falls into the wrong hands. A layer of gadolinium nitrate is deposited on a part of the crystal of a mobile phone microcircuit, which performs the function ... >>

The antenna reduces phone radiation 19.11.2002

The British company "Sarantel" has developed an antenna "PowerHelix" for mobile phones, which can almost halve their harmful radiation. The "PowerHelix" is based on two helical grooves applied to the cylindrical part of the antenna made of ceramic. Initially, such antennas were intended for use in GPS receivers and automotive telemetry systems. When using a new antenna, it is possible to reduce the power absorbed by the user of a mobile phone by 85%, as well as increase the data transfer rate in the cellular network, without resorting to the construction of new base stations and without increasing the power of telephone transmitters. ... >>

bubble shower 18.11.2002

A typical shower consumes about 18 liters of water per minute. Inventor Hartmut Wolf from Bavaria (Germany) has developed a new shower head that reduces water consumption by two-thirds. Not drops of water come out of his soul, but water bubbles with air inside. A special vortex chamber is placed in front of the head, in which the swirling flow of water sucks air into itself. It turns out foam, and a stream of water bubbles escapes from the holes of the shower head. At the same time, the water pressure is high enough that even long hair can be rinsed well from the shampoo. In addition, the openings of the head do not become clogged with lime deposits, as they are constantly blown through with air during regular use of the shower. ... >>

slow action coffee 17.11.2002

The French army is testing caffeine tablets that contain a filler that slows down the absorption of the drug and its entry into the bloodstream. Caffeine from tablets is absorbed slowly, and its maximum concentration in the blood does not exceed that which is achieved after two cups of coffee. But, unlike the effect of ordinary coffee, this concentration lasts for a long time - for 12 hours. In addition to pilots, scouts and paratroopers, the new caffeine is useful for ordinary citizens who experience drowsiness and general malaise after a long-haul flight across several time zones. ... >>

Computer with split personality 16.11.2002

The American company "Xentex" has released a laptop with a split screen, the right half of which can be rotated 180 degrees. If you are working on this computer alone, you can display two different documents on the screen halves, or one document and a web page. And you can work (or play) together, turning half of the screen to the side and connecting an additional regular keyboard from a large computer. When carried, the laptop closes and folds in half along the midline, turning into a small but rather thick suitcase. ... >>

Passenger on x-ray 14.11.2002

At the airport in the American city of Orlando, passengers have recently had to go through a Reypiscan X-ray machine. A special installation with ultra-weak radiation is able to see through only through clothing, its radiation almost does not penetrate the body, and the dose received by the passenger during such an inspection is extremely small. Such a dose can be obtained at home by watching three hockey games on TV. But despite such a weak exposure, if some kind of weapon or contraband is hidden under the clothes, these objects clearly appear on the screen. ... >>

European chess got older 11.11.2002

While excavating a Byzantine-era palace at Butrint, in southern Albania, English archaeologists found a four-centimeter-tall chess piece. It's not a king, it's not a queen. According to archaeologists, the figurine carved on the machine dates back to about 465 AD. Until now, the oldest chess pieces in Europe were pieces found in Scotland and dating back to the beginning of the XNUMXth century. Since it is believed that chess was invented in India around the XNUMXth century AD, it appears that it reached Europe almost immediately after its invention. ... >>

Greenhouse in which it is cool 10.11.2002

On the hot island of Abu Dhabi, a large greenhouse was built according to the project of the English engineer Charlie Paton, independently supplying itself with water for irrigating the tomatoes, cucumbers and flowers grown here. The design also cools itself so that the plants do not overheat in the sun. The front wall of the greenhouse has been converted into a solar distiller. Warm water is supplied here from the surface of the sea. Under the rays of the Sun, it evaporates, and the resulting steam is cooled by sea water taken from a depth of several hundred meters - low temperatures always reign there. When steam condenses, fresh water is obtained. The roof of the greenhouse is made of a polymer film that does not let in the thermal radiation of the Sun, so that the plants feel comfortable. ... >>

Sweet malaria vaccine 08.11.2002

All attempts to create a vaccine against malaria end in failure, as the causative agent of the disease hides inside human red blood cells and liver cells, where the immune system cannot reach it. Therefore, Australian doctors decided to create a vaccine not against malarial plasmodium, but against the toxin that it produces. It turned out that this poison is a complex sugar. Australian researchers were able to synthesize a similar molecule in the laboratory, but without the toxic properties. After its introduction to mice, the immune system of animals begins to produce antibodies to the malarial toxin, neutralizing it. After that, the body copes with the pathogen, devoid of the main weapon. But it will be another ten years before such a vaccine appears in humans. ... >>

Container for carrying computers 05.11.2002

For especially restless computer geeks, the American company "CaseAce Products" produces a whole series of bags, suitcases and bags that allow you to carry even large desktop computers. If your monitor is flat, on liquid crystals, there are no problems at all: on one shoulder you hang a bag with a monitor lined with foam, on the other - a kind of harness in which the system unit is placed, tied with a belt, and in the side mesh pocket - a keyboard, mouse and all required cables. If you have an old-fashioned monitor, on a cathode ray tube, you will have to take in hand a knot in which a bulky monitor is held by straps. ... >>

When the ears wither 04.11.2002

In experiments on rats, American biologists have shown that auditory hairs - thin extensions of hair cells in the inner ear that perceive sound vibrations - die off and are renewed every 48 hours. During the day, the hair lengthens by 2,5 microns. It is assumed that the same process takes place in humans. After attending a rock concert or a blacksmith shop, hearing is usually impaired by loud noises for about 48 hours. Apparently, during this time, the dead auditory hairs grow back. ... >>

The taste of wine depends on the shape of the glass. 02.11.2002

This conclusion was made by chemist Kari Russell from the University of Tennessee (USA). After pouring red dry merlot into a tall narrow glass, into a pot-bellied cognac-type glass, and into a wide shallow glass, he then measured the content of phenolic compounds in the bottled wine. These aromatic compounds are important for the bouquet of wine and have health benefits. It turned out that after bottling in all three glasses, the content of gallic acid increased compared to the wine in the bottle. The chemist believes that during bottling, part of the tannins of the wine, as a result of contact with air, turns into gallic acid. After 10-20 minutes, the content of gallic acid in a tall glass and in cognac remained the same, but in a wide one it fell. Since in a wide glass there is more contact surface of wine with atmospheric oxygen, the gallic acid in it is oxidized, turning into esters, giving the wine a more pronounced dry taste. True, only a specialist taster or a well-trained amateur can notice these changes. ... >>

Street cooling in Tokyo 01.11.2002

Recently, pipes were laid in the sidewalk in front of the Moscow mayor's office, through which hot water will be driven in winter so that the asphalt of at least a hundred square meters of Moscow is not covered with ice. Another problem in Tokyo is that the city, almost devoid of greenery, gets very hot in summer. Since 1900, the average temperature in Tokyo has risen by 5,2 degrees Celsius (in Moscow - by only one and a half degrees), and the average night temperature - by 7 degrees. If earlier the leaves on the trees turned yellow in November, now the leaf fall begins only in mid-December. Local plants are forced out in the city by newcomers from the subtropics. It never snowed last winter. To combat warming in a single city, it is planned to lay pipes under the streets and pump cold water through them taken from the great depths of Tokyo Bay in the summer. The project will cost approximately $330 million. In the meantime, the city authorities encourage property owners to arrange lawns and entire gardens on the roofs of buildings - this reduces temperatures ... >>

Dwarf will find sunken ships 30.10.2002

The unique underwater remote-controlled apparatus "Gnome" was created by specialists from the Russian Institute of Oceanology named after A.I. Shirshov. A miniature submarine the size of a pack of sugar is designed to inspect sunken underwater objects, including their internal parts, as well as to observe fish and the underwater world. "Gnome" is equipped with four electric motors, providing the ability to move under water in any direction at a speed of up to two knots. It is equipped with a color video camera that allows transmission from a depth of up to 150 m. LEDs mounted on the Gnome hull allow the video camera to work in almost complete darkness, for example, inside the hull of a sunken ship. Information from the depth is transmitted in real time via a durable coaxial cable 200 m long. The microdevice is also equipped with a depth sensor and an underwater compass. The total weight of the equipment set is only 18 kg, and its power supply can be from a 220 V network or from a ... >>

remote controlled rat 27.10.2002

Indian physiologist Sanjiv Talwar, who works at New York University (USA), implanted electrodes into the brain of a rat, which made it possible to control the movements of the animal by radio from a distance of up to 500 meters. When the rat obeys the instructions, one of the electrodes sends a pulse to the pleasure center of its brain, so that the rodent feels satisfaction in obeying the signals. Talwar believes that such "robotic" rats, equipped with miniature television cameras and microphones, could help in the search for people littered under the ruins of buildings after the earthquake. By implanting additional electrodes, it will also be possible to give commands "faster", "slower", "up", "down" and so on. ... >>

Food for everyone 25.10.2002

Margareta Bergman of the Swedish University of Agricultural Sciences says that when moose nibble on trees, it stimulates the growth of new branches. This conclusion was led by an experiment in which one group of young willows was trimmed with secateurs, and in another group, after the same haircut, cuts of branches were smeared with elk saliva. The third group was not trimmed in any way. It is known that pruning plants enhances their growth. After 15 weeks, it turned out that simple pruning increased the number of new shoots compared to control plants by 20 percent, and pruning and saliva smearing increased the number of new branches by as much as 110 percent. Which component of saliva acts this way is not yet known. But if it can be isolated and synthesized, then, perhaps, gardens will be sprayed with this drug. M. Bergman notes that some species of plants, in response to their eating by animals, have developed toxic or unpleasant substances in themselves, while others, apparently, have learned to quickly compensate for the damage. ... >>

Refueling at home 23.10.2002

About 200 natural gas vehicles run on the roads of North America. Gas is cheaper than gasoline and produces much less harmful emissions. However, there are not enough gas stations, and a car travels only about 300 kilometers from one gas station. Canadian firm Fuelmaker has developed a unit the size of a small refrigerator that plugs into a home's gas mains and a regular electrical outlet. The installation increases the gas pressure from domestic, about two atmospheres, to a pressure suitable for filling a cylinder of 200-250 atmospheres. To drive two eight-kilometer trips (which is the typical distance that the average American travels to work), you need to pump gas for half an hour, and overnight you can fill up for a longer trip. Gas is currently used primarily by taxis and minibuses in America, and the creation of a home gas station, the firm hopes, will encourage private car owners to switch to this fuel. Enough gas: even if it is translated ... >>

Wheelbarrow with legs 21.10.2002

As you know, the great French mathematician Blaise Pascal invented the usual wheelbarrow with one wheel. But the American engineer, a specialist in robots, Homayun Kazeruni offers a wheelbarrow with two legs. The legs are driven by a gasoline engine from a lawn mower, a person can only support the handles and direct the movement. The wheelbarrow can move briskly over rough terrain and stairs, carrying a load of up to 45 kilograms. The prototype cost $10, but Kazeruni promises that a mass-production sample, which should be ready in about a year, will cost less. It is assumed that such a wheelbarrow will be useful, for example, to rescuers working on the ruins of houses after an earthquake. ... >>

Aircraft and climate 18.10.2002

After the terrorist attacks of September 11, 2001, the skies over the United States were closed to civil aviation for three days so that airports could increase security measures. These three days have given climatologists a unique opportunity to study the effects of high-altitude flight on the weather. One aviation-related factor that can affect the weather is contrails. Such a trace in the form of a white track occurs due to the crystallization of atmospheric moisture in the form of ice on the smallest particles of unburned fuel flying out of the aircraft's turbines. During the three days that flights were banned, the number of such white lanes in the sky over the United States dropped sharply. On the one hand, any clouds, including traces of aircraft, make it difficult for sunlight to reach the Earth's surface, that is, they must cool the planet. On the other hand, they should also reduce the dissipation of heat into space, delaying the infrared radiation of the Earth. Judging by data from 4000 US weather stations, in the three days of the absence of flights over the entire territory of the country, about ... >>

Art originated in Africa 16.10.2002

Both anthropology and archeology originated in Europe. Perhaps that is why scientists have been looking for the origins of mankind for a long time on the European continent. The search for human ancestors in Africa began only in the 20s of the last century and turned out to be very successful. It is now generally accepted that Homo sapiens appeared precisely in Africa, from where he settled on other continents. But for a long time there was consolation for Europeans: the most ancient examples of art were found in Europe - rock art in the caves of France and Spain, about 35 thousand years old. Now, however, South African archaeologist Chris Henshilwood has shown that art actually originated over 70 years ago in Africa. In Blombos Cave on the ocean near Cape Town, Henshilwood and his collaborators found pieces of ocher, a red mineral used by primitive man for painting. But the main find is two stones with rather complex geometric patterns. Of course, the realistic rock art of Europe is impressive. ... >>

Pocket Photo Printer 15.10.2002

The American company SiPix has released a pocket photo printer. By connecting a digital camera to the printer, you can immediately print the pictures accumulated in its memory about the size of a pocket calendar or smaller, for example, a document. The dimensions of the printer itself are slightly larger than a pack of cigarettes, weight without batteries is 300 grams. Printing one picture takes about 95 seconds. True, those who have tested the new device say that the battery consumption is high, but if you print several pictures, you can use the AC adapter. ... >>

Maya Pepper Cocoa 14.10.2002

In the north of Belize (Central America), archaeologists, excavating a Mayan settlement about 2600 years old, found ceramic vessels shaped like coffee pots. Analysis of the scrapings from the walls of the "coffee pots" showed that cocoa was brewed in them. Traces of hot pepper, honey and cornmeal were also found in the plaque on the walls, so the taste of the drink was completely different from that of modern cocoa or chocolate. From the notes of the Spanish conquistadors, it is known that the Maya drank cocoa almost every time they ate, and especially liked to whip the drink into foam. Until now, the oldest material evidence of the preparation of cocoa for food were finds in Guatemala, but they are almost a thousand years younger. ... >>

No words - no memory 12.10.2002

Psychologists have long been interested in the question of what determines at what age a person's first memories are deposited. As the New Zealand psychologists have now shown, it is a matter of acquiring the gift of speech. People can describe the events they remember using only the words they knew at the time the events happened. Gabrielle Simcock and Harleen Hayne of the University of Otago created an interesting and memorable event for young children at the age when a child is just starting to speak. They went to the house of 2-3-year-old kids, bringing with them a "magic box" - a large box with levers and buttons that made funny sounds. The children were shown that they could put a toy in the box, close the lid and press a couple of buttons, after which the toy would disappear and a smaller one would appear instead. At the same time, psychologists recorded what vocabulary the child already possesses. A year later, the experimenters appeared again. The children fondly remembered them ... >>

Laser broom sweeps clean 08.10.2002

Falling leaves create a big problem for English railways every autumn. Leaves accumulated on the tracks are crushed by the train wheels into a slippery mass. Drying, it turns into a hard shiny film. The braking distance is greatly increased, and sometimes it is simply impossible to move the train. Announcements appear at the stations: trains are late due to leaf fall. Special brigades armed with brooms, brushes and scrapers are fighting the consequences of leaf fall. But the results are not encouraging. The head of the company "Laser Thor" Malcolm Higgins, in collaboration with the Rutherford Laboratory and German physicists, developed a laser method for cleaning rails. A locomotive-mounted laser burns the rails with powerful pulses of infrared light that burn away the slippery film without harming the steel itself. However, the equipment is too bulky to be mounted on ordinary trains, so it is planned to install a laser broom on service railcars that regularly check the pumps. ... >>

Paper airplane with laser engine 06.10.2002

In the laboratory of Japanese physicist Takashi Yabe, an airplane cut out of aluminum foil was tested, flying on laser energy. A capsule with water or a special polymer is placed on the tail of the airplane and a beam is directed at it. Evaporating, the substance creates jet thrust. A speed of 1,4 meters per second has been reached. So far it's a toy, but Professor Yabe believes that in the future, larger devices will be able to fly on the same principle, for example, to take air samples at high altitudes. ... >>

Laboratory ring for patients 05.10.2002

The Japanese concern "Mitsubishi" has begun production of a ring stuffed with electronics for the sick and the elderly, which every 20 seconds measures the main functions of the body. Heart rate, body temperature, blood pressure and blood sugar are recorded. The ring weighs only 18 grams. ... >>

Sliding car 03.10.2002

The Swiss company "Rinspeed" showed at this year's motor show in Geneva the sliding car "Presto". At the touch of a button, this open convertible extends 75 centimeters, giving room for two more passengers or a bulky load. Two more features of the Presto are an unusual engine and the absence of rear signal lights. The engine, converted from a Mercedes diesel engine, runs on a mixture of diesel fuel and natural gas, which reduces the harmfulness of exhaust emissions. And the red lights at the back have been replaced with LED displays. On it, before the turn, the word "turn" appears with an indication of the direction, when braking, the inscription "stop" is lit, and when the driver does not take any action, the name "Presto" is lit on the scoreboard. Serial production is not planned yet. ... >>

Ozone against caries 01.10.2002

Dentists from the University of Belfast (Northern Ireland) have proposed a new way to treat diseased teeth. Drilling with a drill is usually used to clean the walls of the hollow from microorganisms. Instead of this painful process in Belfast, a rubber cap is put on the tooth, under which ozone is released for ten seconds. Microbes die, and after that you can put a seal. This method of treatment, already used in practice, costs the patient less than usual. ... >>

Lipstick both paints lips and massages them 30.09.2002

A South Korean inventor has developed a fundamentally new lipstick that not only gives the lips the desired color, but also massages them. The metal cartridge where the lipstick is inserted contains a small battery, wires and a tiny motor. When you press the cartridge, it begins to vibrate, and the owner of the lipstick receives a warm, relaxing lip massage. According to experts, this helps the lips adapt faster to any lipstick and keeps the paint longer. ... >>

Fabric eliminates odors 29.09.2002

In Germany, a fabric was invented that destroys bacteria and odors and, moreover, protects against electromagnetic radiation. The new material consists of cotton yarn containing 5% fine silver threads. And silver, as you know, perfectly disinfects. Miracle material will be useful to athletes. It is also ideal for hospital linen, stockings and shoe linings. In the near future, silver T-shirts are expected to appear on the market at a price of about 30 euros. ... >>

Hard disk data protection 27.09.2002

American scientist B. Noble from the University of Michigan (USA) invented a new way to protect information stored on portable computers. The authentication system he developed automatically encrypts the data on the hard drive as soon as the owner of the computer moves away from it. The fact is that the system maintains radio communication with a special wearable device, which should always be with the owner of the laptop and independently establish a wireless connection with the computer. When the owner of the car moves away from it at a sufficiently large distance, a wearable device built into the wristwatch signals this to the computer, and the data is encrypted. ... >>

Texts are typed only by eye movement 26.09.2002

Thanks to the development of British scientists D. Ward and D. McKay from the University of Cambridge, it became possible to type texts of any complexity without any keyboard with just one movement of the eyes. The system works as follows. A special camera installed on a computer monitor captures the position of the pupil of the user's eye, which glides over the list of letters and symbols on the screen. At the moment you stop looking at one of them, the program determines it by the position of the pupil. The program can logically evaluate the input text, determine which character or word will be entered next, and correct errors. According to the developers of the system, it can be used to print up to 35 words per minute. ... >>

DIY robot 24.09.2002

The American company "Asgopate" offered robotics enthusiasts a small "do-it-yourself" kit, which allows you to assemble a small robot controlled by a Palm handheld mini-computer in one or two evenings. This allows you to use very complex programs written, for example, in C ++ languages or HotPaw Basic. In addition, special applications created by programmers from Asgopathe and the Robot Institute at Carnegie Mallon University allow you to make the robot follow a route drawn simply on the touch screen of a handheld. The robot is a hexagonal body on three wheels with a computer mounted on top The unique chassis and the shape of the wheels give the machine excellent mobility: the robot can move in any direction, and the infrared sensors installed on it, which measure the distance to obstacles by triangulation, protect it from collisions with walls, furniture and other obstacles.The price of the kit is 250... 300 USD. ... >>

Elevator to space 22.09.2002

Seattle-based High Lift Systems has received $0,5 million from NASA to investigate the feasibility of building a lift to space. It is supposed to be a very long cable, with one end attached to an ocean platform and the other to a satellite on This elevator will mechanically lift both people and cargo into space.The first elevator into space at NASA is expected in about 50 years. ... >>

Economical hybrid motorcycle 21.09.2002

The Japanese company Yamaha announced the creation of a prototype of the world's first and most economical hybrid motorcycle, which is enough for 1 liter of gasoline to travel 250 km. The new motorcycle resembles a bicycle and is equipped with electric and gasoline engines. The electric motor is located near the pedals and is used for starting off. When the motorcycle picks up speed of 5 km / h, a small gasoline engine hidden under the saddle comes into action, which recharges the battery during the movement. ... >>

Sound stream localization creates the perfect signal 20.09.2002

E. Norris, a professional inventor who heads American Technologies, has created a device that is able to change the established ideas about the ideal sound source. The principle of operation of the novelty is as follows: the sound signal supplied from almost any source is translated into the ultrasonic range by modulation and is fed into a given area of ​​the room with two narrow beams. Dead silence reigns in the room, and only people in the interference zone of the rays can listen to the message or music intended for them. The problems of intrusive advertising in public places and standing waves that inevitably arise when using traditional acoustic systems are completely removed. The development of Norris, which provides the highest degree of localization of the sound stream, is completely devoid of this drawback. ... >>

Call across the stratosphere 19.09.2002

The American firm Space Data Corporation offered the National Weather Service a mutually beneficial cooperation. Every day, meteorologists launch 30 balloons with meteorological instruments into the stratosphere, to a height of up to 140 kilometers. If scientists allow cellular communication equipment to be attached to their probes, the company will provide them with an accurate minute-by-minute determination of the coordinates of each ball using a satellite navigation system, which will significantly increase the reliability of forecasts. And residents of sparsely populated and hard-to-reach areas, especially mountainous areas where radio waves are blocked by mountains and gorges, will receive reliable mobile communications. One balloon will serve an area of ​​100 square miles (one tower with a base station - 000-100 square miles). The company undertakes to supply about 150 balloons with its equipment (the kit will cost about $300) annually, since most often the load of the cylinder is irretrievably lost after the probe bursts in the upper atmosphere. Moreover, the entire payload, including weather instruments ... >>

mosquito tomato 16.09.2002

The American chemist Michael Rowe, while testing new compounds that repel insects, suddenly noticed that one of them, in terms of the structure of the molecule, is very similar to some kind of oily organic substance that is part of tomatoes. He synthesized this substance, soaked a piece of gauze with it and threw it into a jar of cockroaches. The insects immediately fled. It turned out that the "tomato" compound also repels mosquitoes. Compared to the well-known DEET repellent, it is no less active, but lasts longer on the skin and does not cause allergies. The chemist does not disclose the true name of the new repellent (a patent has not yet been issued), but reports that this substance has long been known, is used in cosmetics, and its harmlessness has been fully proven. Therefore, there is hope that the new repellent will be on sale by the next mosquito season. ... >>

Binoculars with a camera 15.09.2002

The Japanese company "Pentax" has released binoculars with a built-in digital camera. The camera matrix has 800 elements; The light sensitivity changes automatically depending on the lighting and reaches up to 1600 units. By the way, such a high sensitivity allows, for example, to shoot scenes from a play in a theater without disturbing anyone with flashes. The binoculars zoom up to 5,5 times (the power of magnification can be changed). Stores up to 100 pictures in memory, which can then be displayed on a computer or TV screen. There is a high-speed shooting mode: up to 5 frames per second for 10 seconds. ... >>

mosquito prick 14.09.2002

A mosquito bite begins to be felt only after the bloodsucker injects poisonous saliva into the injection site, but the injection itself is painless. Taking the structure of a mosquito proboscis as a model, employees of Kansai University in Osaka (Japan) created a needle for a syringe, the injection of which is not felt. The new needle is made of crystalline silicon oxide and is only one millimeter long and one-tenth of a millimeter in diameter. ... >>

Pocket speaker 12.09.2002

A handheld device manufactured in Hong Kong that is smaller than a computer mouse. It plugs into the headphone jack of any portable sound source (cassette or disc player, pocket receiver, portable electronic game, etc.) and turns any smooth surface into a loud sound source. When you turn the lever, the device sticks to the surface (it can be a window pane, a glazed picture on the wall, a smooth table), its wire is connected to the headphone output on the player, and you hear the music. By purchasing two of these devices, you can listen to stereo. True, they say that the sound is not of the highest quality. ... >>

desert crocodiles 09.09.2002

Biologists were struck by an unexpected discovery: in the south of the Sahara, in Mauritania, several groups of crocodiles were found. Irish zoologist Tara Shine examined the temporary reservoirs of the Mauritanian part of the Sahara, filled with rare rains, and then dry up. In 19 percent of them, Shine was surprised to find crocodile populations. By all indications, these are Nile crocodiles, differing only in small size: the length of an ordinary Nile crocodile is up to five meters, and a desert one is one and a half meters. Another feature: Saharan crocodiles do not attack people. Perhaps their small size makes them non-aggressive. Local tribes revere crocodiles as gods of water, so rare in these places. In some places, between the sand dunes and the rocks heated by the sun, you can find temporary swamps overgrown with grass. They store water from six months to four months a year. There are crocodiles. In one swamp there can be from one to three dozen individuals. What do reptiles do during the dry season? Fall into a kind of hibernation, scoring ... >>

Electromagnetic earthquake prediction 07.09.2002

Using a theory developed by Greek geophysicists, Japanese seismologists were able to detect the electrical and magnetic precursors of a major earthquake. Greek scientists, working under the direction of Panagiotis Varotsos, have been claiming for about 20 years that the method they have developed makes it possible to capture changes in the Earth's electric and magnetic fields that appear several months before some earthquakes. The Greeks justify their theory by the fact that many rocks have a piezoelectric effect and, as mechanical stresses accumulate in them, they generate an electric field and related effects that can be registered. Until now, other research teams could not confirm this hypothesis. And just recently, Japanese specialists from the Center for Research on Earthquake Prediction reported the registration of changes in the electric and magnetic fields on the Itsu Islands since March 2000. Unusual changes intensified, and in the end ... >>

It's dangerous to leave the hospital on Fridays 04.09.2002

A patient discharged from the hospital on Friday has many chances to return to the ward again within a month or even die. Canadian doctors came to this conclusion after studying the statistics of discharges from local hospitals. Researchers at the University of Toronto have collected data over the past 10 years on 2,4 million Canadians admitted to the hospital for urgent reasons. It turned out that within a month after leaving the hospital, 5,4 percent of patients were forced to return to the ward after a new attack of the disease, and 1,7 percent died. Moreover, these are mainly those who checked out on Friday. Part of the reason, the researchers say, is that more people are released from hospitals on Fridays than on any other day of the week. Apparently, patients do not want to spend extra weekends in the hospital. But it is possible that doctors are also in a hurry to free up more “beds” for the new working week and discharge those who would do well to spend a few more days under medical supervision. In addition, on weekends the polyclinic works ... >>

Power plant on a kite 03.09.2002

Australian engineer Brian Roberts intends to get electricity from high-altitude air currents that blow constantly and at high speed. To do this, he is going to fly kites with a rotor, and the energy will be transmitted to the ground through three wires holding such kites on a leash. The engineer has already received permission from the local aviation authorities to launch his design to a height of up to 1600 meters, but for now he is testing a reduced model at an altitude of about 120 meters. ... >>

Check your euros 01.09.2002

Save International (France) has developed a counterfeit euro detector, which is based on a metal thread embedded in the thickness of each European banknote. On this thread is imprinted a magnetic code, different for each monetary denomination. The detector, outwardly resembling a computer mouse, must be held over the banknote. If at the same time the "mouse" emits a loud click, accompanied by flashes of signal LEDs, then the ticket is real. If there are no these effects, and a continuous beep sounds, you have a fake in front of you. ... >>

Safety belt for car 31.08.2002

The German company Bosch develops radar and video sensors designed to reduce the number of traffic accidents. The system of such sensors, when installed on a car, creates a virtual "safety belt" around it. Many video cameras mounted in the car will record not only road signs located at a distance, but also other road users. An icon on the display will inform the driver of the speed limit ahead or if there are any obstacles in the way. According to P. Knoll, head of the department that deals with these developments at Bosch, the implementation of video equipment is planned to begin in 2006. ... >>

The screw remembers the shape 30.08.2002

The Japanese heavy engineering company "Mitsubishi Jukogyo" has presented a unique development - a propeller with a shape memory effect. The screw is made of a durable variety of polymer plastic, which, when heated to 120 ° C, "remembers" its original shape and smoothes the thread on the rod. As a result, it can be easily pulled out without the use of a screwdriver. According to the authors of the novelty, this significantly speeds up the dismantling of various household appliances, mobile phones, computers with a lot of tiny screws, which take a lot of time to unscrew. With the "memory effect" it happens ten times faster. The bolts themselves can then be reused. ... >>

Electronic tablet instead of textbooks and notebooks 29.08.2002

The Taiwan Computer Association (TCA) has created a group to promote the spread of electronic school bags in the country - computers that should combine school textbooks, notebooks, diaries and everything else a student needs to study. Many experts, not only in Taiwan, predict that these devices will gradually replace traditional printed books. Their advantages are not so much in their low weight (a 10-inch tablet PC weighs only a little more than 1 kg), but also in the fact that switching to them will create a new, with incomparably greater opportunities, learning environment. In addition to the fact that several dozen textbooks with pictures can be "stored" in such a computer, teachers can centrally check the work done on them and distribute materials and homework or, using electronic boards, transmit their lectures. "Electronic backpacks" are created on the basis of tablet computers equipped with wireless communication. One of the solutions ... >>

Inflatable braking device in a backpack 28.08.2002

In Russia, an inflatable braking device (NTU) has been developed, which is fixed like a backpack on the back. When falling at the right moment, it opens up in the form of a "flocock", providing an oriented fall, and further forms the conditions for a soft landing. NTU was tested in 2000-2001, when the most valuable cargo had to be dropped to the Earth from the Mir space station before its flooding. Such a device can be used as a safety device on high-rise buildings. In emergency situations, people using the NTU will be able to urgently leave the building by air. ... >>

Airships put out fires 27.08.2002

California-based Wetzone Engineering is designing huge airships to fight wildfires that other aircraft still can't handle. The developers believe that their airships with a length of more than 300 m will be able to carry up to 1 million liters of water, dropping it in various ways on a flaming forest. There are two ways to put out fires for the airship Wetzone Engineering: artificial rain from a variety of valves in the lower part and point "watering" of the fire from hoses. Depending on the size of the airship, 50100 liters of water per hour will be continuously poured onto the fire area. For comparison: the largest firefighting aircraft (modernized Hercules military transports) currently in use can carry up to 13 thousand liters. The airship will be able to refuel with water using special hoses and pumps from any body of water. ... >>

The laser controls the aircraft 26.08.2002

Scientists at the Tokyo Institute of Technology are making tiny unmanned aerial vehicles powered by a laser beam sent from the ground. Aircraft with a wingspan of 5 cm have small aluminum plates located in the upper part of the fuselage, on which water droplets are placed. The laser beam heats the aluminum, the water evaporates and acts like rocket engine exhaust. It is almost impossible to measure the rate of evaporation, but water particles move at a speed of at least 5000 km/h. Using a laser beam as a power source makes the aircraft very light. With the help of a laser beam, it was already possible to raise a small aircraft the size of a baseball to a height of 70 m, and its flight lasted 13 seconds. ... >>

Narrow audio broadcast 25.08.2002

The Audio Spotlight and MIT Media Lab have developed a device that uses the non-linear properties of air to create a narrow beam of sound. The device will allow you to broadcast sound waves to a certain area at a distance of more than 100 m, and the sound will not be heard outside the "sound" zone. The audio transducer has a diameter of 30 cm, and the width of the sound beam it produces is 3°. ... >>

Pay your fare using your mobile 24.08.2002

South Korean mobile operator KT Freetel has launched a system that will allow subscribers to use their mobile phone as a credit card and to pay for public transport. The devices specially designed for the K-Megse service are equipped with an infrared transmitter for working with ATMs as a credit card and a radio frequency chip for use in transport (in South Korea, the corresponding systems are in buses and subways). So far, the payment part of K-Megse is available only to customers of one bank, but KTF plans to expand cooperation and cover this service with users of all types of credit cards. ... >>

Cart in the phone 23.08.2002

The mobile phone manufacturer, the Finnish company Nokia, plans to build into the software of its devices a function similar to the "recycle bin" in Windows. Now the owners of cell phones will be able to retrieve from the "trash can" erroneously deleted ring tone, screensaver or phone number. Of course, there is also the possibility of erasing information completely. Nokia believes that the mobile "basket" will be well received by users, because it will insure them against losing important information on the phone due to accidental misoperations. ... >>

The mobile phone controls the computer 22.08.2002

The Japanese branch of IBM has released software that can be used to control a personal computer from a mobile phone. The PC desktop image is transferred to the phone. The phone's display shows a part of the phone that you can scroll through. The phone's keys simulate mouse clicks and other actions. The phone running this software must be connected to the i-Appli service (based on i-mode). ... >>

Mobile Spies Deactivated 21.08.2002

The Israeli company Netline has created a device that allows you to quickly identify working spy mobile phones. Each mobile phone periodically sends a signal to the network, confirming that it is on and connected. This is what the Cellular Activity Analyzer (CAA) registers, allowing it to detect turned-on devices within a radius of up to 30 m. It works with all mobile communication standards at all frequencies they use: 800, 900, 1800, 1900 and 1500 MHz. Applications of the device are aircraft, where mobile phones can damage navigation equipment, hospitals, where they can affect the accuracy of electromagnetic measuring instruments, as well as information security systems. The fact is that the included cell phone is a universal, simple and cheap means of listening. Organizations that check premises but "bugs" usually do not scan cell phone frequencies, as they are often used. ... >>

Cell like remote control 20.08.2002

The Israeli company ControllD has developed a way to use a cell phone as a remote control. In order to, for example, open the gate to the garage, the subscriber only needs to dial a specific telephone number. The call goes to the control device equipped with caller ID. Thus, only signals from authorized users are processed. Although the system was originally developed as a highly specialized one, it is obvious that the actuator can be connected not only to the gate, but also to perform other functions. By dialing different numbers, one phone can control a large number of such devices. ... >>

Mobile phone embedded in teeth 19.08.2002

British engineers D. Auger and D. Loizo proposed the idea of ​​creating mobile phones built into the teeth of their owners. The miniature size of microcircuits that process radio signals makes it possible to implement this idea in the near future. The "dental telephone" will be implanted directly into the teeth during a routine visit to the dentist. The messages received by such a phone, after being converted into acoustic signals through the bones of the head, will enter the inner ear. Information transmitted in this way is heard only by one person - the one to whom it is addressed. Therefore, it will be possible to use the "dental telephone" at any time and in any place, even in cinemas and museums. ... >>

Records are a matter of chance 18.08.2002

It turns out that new athletic records are most often not set due to new training methods, improved technique, improved sports equipment, or outstanding physical qualities of the athlete. And not even thanks to cunning doping, but just by pure chance. Daniel Hembris and his colleagues at the research center in Jülich, Germany, collected data from 22 different types of track and field competitions that took place at the German Championships from 1980 to 1989. Information such as the weather and other factors at the venue were also recorded. After that, scientists relied, based on the data array, to predict what records could be set at the same championships in 1990-1999. Moreover, in their forecasts, they proceeded only from random factors, namely from the state of the weather (temperature on the day of the competition, strength and direction of the wind), as well as the height of the competition place above sea level. When they compared their calculations with the real results of the competition, it turned out that at 18 ... >>

tailor lasers 17.08.2002

The German company "Vitus" has developed a system for quick tailoring. Three lasers and 24 miniature video cameras measure the customer in ten seconds. The received data is sent via the Internet to the garment factory, and by the evening you can receive the finished dress. ... >>

The benefits of sleeping during work hours 16.08.2002

A study on sleep during working hours was carried out by physiologists from Harvard University. A group of 30 volunteers were asked four times a day - at 9 am, at noon, at 4 and 7 pm - to find an inconspicuous detail in a drawing on a computer screen, the position of which changed each time. Ten test subjects did not sleep all day, and by the evening the detection of the desired part had slowed down by 52 percent. The other ten were allowed to sleep for half an hour at two in the afternoon. Their reaction time did not increase in the evening. Ten more slept in the middle of the day for an hour - their results improved by the evening. A dozen more volunteers were invited, they were not allowed to sleep, but simply to rest. It did nothing to increase their vigilance. Scientists have found a theoretical explanation for such results. Our ancestors, primates, inhabitants of hot tropical countries, are mainly crepuscular animals, they are especially active at dusk, in the evening and in the early morning. And in the middle of the day, at the hottest time, they sleep under the canopy of dense crowns. So claim ... >>

New Science - Forensic Seismology 15.08.2002

More than forty years ago, the nuclear powers began to create networks of seismic stations to monitor enemy nuclear tests. Now these networks, which have evolved significantly and increased their sensitivity, are largely out of work. At the annual conference of the American Geophysical Union, held in April of this year, representatives of a new science - forensic seismology spoke. Recordings of supersensitive seismographs, it turns out, can contribute to the investigation of various incidents and crimes. So, Terry Wallace, a seismologist from the University of Arizona, collected seismograms of such incidents as explosions of oil and gas pipelines, plane and train crashes - about 400 records in total. Having analyzed them, Wallace can now, for example, determine from the seismogram of a plane crash whether it hit the ground still intact or exploded in the air. Another geophysicist finds secretly dug underground tunnels by reflecting seismic waves. So it was possible to reveal the tunnels made by the smuggler ... >>

Cars wink at the oncoming 14.08.2002

Drivers often flash their headlights at oncoming vehicles, warning, for example, of an ambush with a radar speed meter. According to the German inventor Heinz Müller, modern xenon lamps in the headlights will allow much more meaningful information to be transmitted. The new lamps are gas-discharge and therefore have no inertia. Flashing at a frequency imperceptible to the eye, up to a billion times per second, they can transmit messages, for example, about traffic jams, about accidents, about areas with ice, and if necessary, about the technical condition of the car. The perceived information will be played on a screen in front of the driver or read aloud by a speech synthesizer. ... >>

green mouse 13.08.2002

This is the name of a pocket generator for recharging cell phone batteries, proposed by the French inventor Stefan Hugenin. Outwardly, this device weighing 110 grams really resembles a computer mouse, but with the essential difference that it can and should be pulled by the tail. The handle protruding from the rear end of the "mouse" must be pulled several times, as when starting a boat motor. The generator located inside is untwisted, from which the phone is recharged. At the front end of the device there is a white LED that lights up when a button is pressed, so that the "green mouse" also serves as a flashlight, the light of which is visible from a distance of up to a kilometer. ... >>

180 kilovolt phone 12.08.2002

A mobile phone is an indispensable thing in the event of an attack by hooligans. No, not only in the sense that you can call for help. The American company "FDP Spywatch" has released an electric discharger disguised as a cell phone. A nine-volt battery allows you to distribute electric shocks with a voltage of 180 kilovolts left and right. In addition, the siren, hidden in the same housing, emits an unpleasant sound with a volume of up to 130 decibels (above the pain threshold for the human ear). The arrester is equipped with a fuse, it is worn on the belt in a leather case, like a regular telephone. ... >>

Home economics is not a substitute for sports 11.08.2002

Usually to the question "Do you do physical education?" housewives answer: "Here you will break so much in a day, what other physical education!" However, housework is a laborious and tedious task, but it does not allow the hostess to keep herself in good physical shape. British doctors came to this conclusion after studying the life and health of 2341 English women aged 60 to 79 years. Of these, 53 percent spend at least 2,5 hours a week on rather hard domestic work - washing floors, windows, dishes, dusting in places where it is impossible to use a vacuum cleaner, caring for a garden at home, and so on. Only 21 percent of older housewives engage in special exercises to keep fit - jogging, brisk walking, swimming, aerobics or tennis. And only these sports grandmothers retained good heart rates and normal body weight. ... >>

These children are in our livers 10.08.2002

As a group of Italian researchers from the University of Milan showed, it is possible to detect the DNA of her son in the blood of a mother, even if he was born decades ago. Previously, it was known that the cells of the child can be stored in the mother's body for several decades. They remain in the lymph nodes, liver, spleen and muscle tissue. Of the 160 women who have at least one son and examined by Italian scientists, 30 had DNA fragments from the Y chromosome, which is found only in men, in their blood. Scientists suggest that the son's cells, left somewhere in the mother's body, gradually decay, throwing their hereditary material into the blood. ... >>

Atlantis in Guatemala 09.08.2002

Wherever they searched for the legendary Atlantis - in the Mediterranean Sea, near the Azores, in the Baltic and even in Antarctica. Now a German historian, a specialist in the Mayan people, Joachim Ritstig, declares that the lost city was not in the sea, but on Lake Izabal in Guatemala. According to the historian, he found indications of this place on stone steles placed by the Maya in the city of Copan. Inscriptions report that a city named Atlan was located on Lake Izabal and died in 667 BC. e. At the bottom of the lake, at a depth of 20 meters, ring-shaped structures were found with the help of an echo sounder. As you know, the city described by Plato was built in the form of concentric rings. Perhaps only these two features - the concentric layout and the name of the city - coincide with Plato's story, recorded from the words of an Egyptian priest. Nevertheless, Ritstieg believes that this is enough for bold conclusions. The city was located on an island in the center of the lake, which was a water-filled crater of an extinct volcano. During a strong earthquake ... >>

Oven with wings 08.08.2002

Developed in Germany, a portable solar oven weighing 12 kilograms is being tested in several countries in Africa. The name of the design, butterfly oven, was given by folding "wings" made of polished aluminum with a total area of ​​​​two square meters. With a cloudless sky, a liter of water boils in six minutes. Now the designers are working on a solar bakery, which will be equipped with 14 mirrors. In a day, she can bake up to one and a half thousand loaves. ... >>

Hospital weather forecast 07.08.2002

The medical consultant of the British Meteorological Service, Dr. William Byrd, having processed a large amount of information about the admission of patients to emergency rooms and comparing it with weather changes, came to interesting and important conclusions for practice. So, three days after a cold snap, deaths from a heart attack become more frequent, after five days - strokes, after 12 - pulmonary diseases. By telling one of Reading's major hospitals which patients to prepare for in advance, Dr Bird saved her several thousand pounds. Work in this direction is just beginning. In the future, the author of the research says, it will be possible to make personal weather forecasts for health for everyone. ... >>

If left untreated, the disease will disappear 05.08.2002

A study conducted by Italian geneticists and doctors in Burkina Faso (formerly Upper Volta) led to curious results. Among the Mossi people living here, malaria is not very common, although there are enough malarial mosquitoes around. It turns out that many representatives of this tribe are carriers of a special gene that makes hemoglobin inedible for malarial plasmodium. Those people who have this gene in two copies (received from both father and mother) are almost 100 percent protected from malaria. Those who have a protective gene inherited from only one side, sometimes still get sick. And finally, those few Mossi who do not have a special gene at all are quite susceptible to malaria. Researchers believe that the existing cases of malaria in Burkina Faso are largely due to the fact that it is being treated with effective modern drugs. If there was no treatment, after some time those who did not have a protective gene would simply die out. ... >>

Traffic police orders to spit 03.08.2002

Simple and complex devices have long become familiar, analyzing the breath of the driver for the presence of alcohol vapors. As drug-driven driving is an acute problem in the US, a company has developed a device that detects cocaine, marijuana, ecstasy, amphetamines, and half a dozen other drugs in saliva. It is enough to spit into the tube - and after five minutes the result appears on the screen. At the same time, alcohol is also found. ... >>

Eleven more moons of Jupiter 02.08.2002

Astronomers working on a large French-Canadian telescope in the Hawaiian Islands have reported the discovery of 11 more moons of Jupiter. All these satellites are only a few kilometers across and move in groups, so scientists assume that they are fragments of larger celestial bodies that for some reason broke into pieces. The maximum distance of the newly discovered moons from Jupiter is 20 million kilometers. All of them revolve around Jupiter in the opposite direction to its rotation. Until now, Saturn was considered the richest in satellites - 30 moons, but Jupiter has now surpassed it by 9 satellites. Astronomers plan to study their orbits and size more precisely in the future. ... >>

Drug dealers caught in nets 01.08.2002

Smugglers bring drugs into the United States on high-speed boats that the Coast Guard often cannot keep up with. Therefore, the specialists of the navy have developed a trapping net to capture these boats. A rocket is fired in the direction of the intruder, from which, along its trajectory, an adhesive network of metal threads, equipped with sharp spikes, unfolds. It entangles the smugglers' boat, depriving it of maneuverability. She responds to attempts to cut the network with electric shocks. ... >>

New windows regulate temperature and light 31.07.2002

In a few years, traditional glass and plastic windows will be replaced by liquid crystal structures that can independently regulate the temperature and degree of lighting in the premises. A research team at Research Frontiers has created "chameleon" windows that are controlled by electrical signals. The new windows use a unique technology of light-absorbing microscopic particles - "light barriers". Millions of these particles are placed between transparent planes and have the ability to move freely. The coating, which is like a film placed on top of them, is a conductor. When an electrical voltage is applied to the structure, the microparticles organize themselves in such a way that light can pass through the device unobstructed. In the absence of voltage, the particles "disorganize" and the window becomes impenetrable. This technology can be used not only for windows, but also for ski goggles, car mirrors, etc. According to the developers, the only ... >>

Personal air conditioner 30.07.2002

The idea of ​​personal air conditioning, already embodied in a number of original designs, has become very popular recently. A personal air conditioner (in English, PEZ - Personal Environment Zones) not only cools the face and breath, but also ionizes the air just before it enters the nasopharynx. In addition, the owner of the "our" air conditioner can protect himself from any odors. Several variants of PEZ have been developed, and all of them are able to clean the air from smoke and dust. The advantages of the novelty include its portability: the device is comparable in size to a CD player. The kit includes a replacement filter and batteries. The design is worn around the neck and looks like a collar weighted with a filter, a wire goes down the back to the battery hanging on the belt and feeding all this miracle. There are models that specialize in air humidification. This kit comes with a small water container. Depending on the model, the cost of personal air conditioners ranges from $50 to ... >>

The thermal imager will expose the scammer 29.07.2002

A thermal image can detect a lying scammer and thus help the security service, for example, an airport. A criminal volunteer, recruited by D. Levin from the May clinic in Rochester (USA), hit a mannequin and snatched 20 dollars. from his hands. Using a thermal imaging camera, Levin captured an image of his face during interrogation. The guilty person, when he lied, had a bright flash in his eyes and around his eyes, while there were no changes in the control innocent interrogators. As a result, it was possible to separate the guilty and the innocent with an accuracy of 83%. This result was comparable to the existing lie detector - a polygraph that captures the pulse rate, respiration or the appearance of perspiration. When working with a thermal imaging camera (unlike a polygraph), you do not need to know the psychology of a person or the initial parameters of his pulse, respiration, and you do not need time to process and analyze the measured data. The thermal imaging camera can also reveal different ways of disguising the offender - heavy makeup or ... >>

Artificial eyes 27.07.2002

Canadian doctors managed to partially restore sight to a 39-year-old farmer who was blinded 20 years ago as a result of an accident. This is not the first patient whom Dr. W. Doubel, the inventor of "artificial eyes", helped to get rid of seemingly hopeless blindness. Patients wear what looks like sunglasses with a miniature camera embedded in them. The microcomputer and stimulator are located in a special bag or on a belt. All this equipment is attached to a tiny device resembling a fire hydrant and implanted in the skull. This device connects two electrodes to the surface area of ​​the brain responsible for vision. Unfortunately, "artificial eyes" will not help, for example, those who are blind from birth or who lost their sight in childhood, since in such patients the cerebral cortex is underdeveloped. Those who have lost the ability to see already at a fairly mature age, and who remember what and how it should look, with the help of "artificial eyes" will be able to distinguish between the surroundings. ... >>

Ultrasound will dry the laundry 26.07.2002

Australian student D. Knight, who studies industrial design, has developed a project for a washing machine that can dry and iron clothes. In her invention, she used ultrasound technology, which washes the laundry from contamination in a sealed special chamber, after which it is dried with hot air so that wrinkles do not form. According to Knight, a similar technology is now being studied in Japan, however, her invention is unique because it combines three processes at once. ... >>

Salt ban 24.07.2002

In France, it was decided to fight with table salt - it is believed that it can contribute to the development of hypertension. In addition to the salt from the salt shaker, which many grab at without even trying the dish, every Frenchman eats an average of 8 grams of sodium chloride per day, which comes with various finished products. It is advisable to reduce this intake by 1-3 grams. One of the main sources of salt in the diet is bread. A law has been proposed to the National Assembly that would first standardize the salt content of bread at no more than 24 grams per kilogram of flour, and then reduce the allowable level by 5 percent annually. In five years, the permitted salt content will drop to 18 grams per kilogram. Considering that 1,58-1,72 kilograms of dough is obtained from a kilogram of flour, monitoring the implementation of the standard will not be an easy task. However, French bakers do not object to this burden. ... >>

sky seismograph 22.07.2002

The Japan Geographic Institute has installed more than a thousand sensors for the movement of the earth's crust around the country. Such a sensor is a 4,5 meter high stainless steel column with a satellite positioning system receiver on top. Every half minute, the receiver determines the coordinates of the location of the sensor with an accuracy of about two millimeters, which makes it possible to notice tectonic shifts. The average distance between the sensors is 25 kilometers, but in seismically hazardous areas they are more densely spaced. Last year, this system detected unexpected shifts in the Nagoya city area. Typically, the earth's crust here moves westward at a rate of about 2,5 centimeters per year. But recently it has reversed direction. Looks like a big earthquake is on the way. ... >>

test tube steaks 20.07.2002

Dermatologist Vite Westerhof from Amsterdam (Holland) has developed a way to grow muscle tissue - in other words, meat - in a nutrient medium. Doctors have long been growing layers of skin from small shreds taken from a patient to treat burns. Westerhof learned to grow in 5000-liter reactors filled with a nutrient medium of amino acids, vitamins and enzymes, pieces of animal meat 50 grams each. The taste of the product is like that of ordinary lean meat. As a seed, a microscopic piece of muscle tissue is taken from a cow or chicken, and the animal is not slaughtered. True, while the process is too slow: the number of cells doubles in three days. ... >>

The roof of the world starts to leak 18.07.2002

Whether human activity is to blame for the fact that global warming is going on is still not exactly clear, but it is clearly coming. Employees of the UN Environment Program report that glaciers have begun to melt in the Himalayas. Global warming is expressed primarily in the fact that the temperature is rising in cold areas. The Himalayas are now on average one degree warmer than they were 30 years ago. According to images from space, it was calculated that the glaciers of Bhutan annually retreat by 30-40 meters, Nepalese - by a hundred meters. Therefore, in Nepal and Bhutan, 44 mountain lakes threaten to overflow (the total number of lakes in this region is about four thousand). Then the water with silt will fall into the valleys, sweeping away everything in its path. Tens of thousands of people could die. UN experts are proposing to gradually release water from the lakes, using it for irrigation or to generate electricity, but such projects will be very expensive. ... >>

Fire motorcycle 17.07.2002

The fire service of the German city of Duisburg has adopted BMW motorcycles specially equipped to extinguish fires. A fire extinguisher with a capacity of about ten liters is mounted on the trunk of a motorcycle. A special atomizer creates a fog with droplets with a diameter of one tenth of a millimeter from the fire extinguishing solution. A cloud of fog is thrown up to a distance of ten meters. Fast and agile motorcycles are usually the first to get to the fire. ... >>

Fasten your seat belts, backseat passengers 15.07.2002

After studying one hundred thousand car accidents, the Japanese scientist Macao Ichikawa came to the conclusion that passengers in the rear seats should definitely wear seat belts. In a head-on collision, the front passenger and driver are six times less likely to die if the rear passengers are buckled up. If not, inertia throws them forward. At a speed of 50 kilometers per hour and with an average Japanese weight of 70 kilograms, the push can be fatal for those sitting in front. Now seat belts are mandatory in only 14 countries around the world. ... >>

Bushman computer 14.07.2002

For the census of the fauna of the Karoo National Park in the Kalahari, the Bushmen were given pocket computers. Hunters, going to the savannah, take with them, in addition to the bow and arrows, a small device on which they record every encounter with animals. Using the keys with the silhouettes of 60 animal species drawn on them, hunters record in electronic memory the type of animal, the number of individuals, their sex and age, and the direction of the herd. If traces of animals are found, they are also recorded. The satellite navigation signal receiver built into the computer notes the exact coordinates of the place where the meeting took place. From time to time, biologists rewrite the accumulated information into a common database. This method of counting fauna is more accurate and cheaper than aerial observations. ... >>

The smallest predator 13.07.2002

French biologists have discovered the smallest predator. This flagellar protozoan, living in the sea and named Picofagus flagellatus ("tiny flagellum eater"), is less than three thousandths of a millimeter across and has two flagella - short and long. The picophage uses a short flagellum like a propeller, floating in the water, and a long flagellum covered with sticky hairs catches its victims - bacteria that are only three times smaller than a predator. ... >>

Working Earth Model 11.07.2002

I remember that Woland had a globe on which one could see in real time what was happening in different countries. A similar device was installed in the new Technology Museum in Tokyo. The globe with a diameter of 650 centimeters and weighing 18 tons is covered with small square screens - there are 3715 of them in total, and each has 256 LEDs that allow you to display information that comes from satellites and weather stations. Every three hours, a picture of cloud cover over the Earth is shown. At the request of visitors, you can see the changes in the cloud pattern over the past month. It is especially interesting to observe the passage of typhoons and cyclones. From time to time, the globe switches to display the concentration of carbon monoxide at an altitude of 6000 meters above the Earth. Low concentrations are depicted in shades of blue, dangerous ones in orange and red. Twice a day, the globe shows the change of day and night: one hemisphere plunges into darkness, and the lights of large cities shine on it. The exposition is a great success with the visitor ... >>

cocaine vaccine 10.07.2002

The English biotechnology company Zinova announces the development of a vaccine that eliminates the adherence of a drug addict to cocaine. The vaccine works by preventing the drug from reaching the brain. Cocaine molecules are small enough to pass through the blood-brain barrier that protects the brain from toxic substances. The vaccine stimulates the production of antibodies to cocaine, which adhere to the drug molecules, making them larger, after which they get stuck in the barrier. Cocaine ceases to enter the brain, the addict loses his usual pleasure and quits the drug that has become useless. Clinical trials of the vaccine have begun. Meanwhile, the company is preparing a similar vaccine against nicotine. ... >>

poisoned planet 08.07.2002

Before you send a man to Mars, you need to find out if Martian dust is poisonous. So says the US National Science Council. The fact is that the Pathfinder research robot that roamed Mars five years ago found a rather high content of chromium in the dust, and some measurement results suggest that this may be its poisonous hexavalent form. On Earth, it is practically absent in nature, but it is obtained by some chemical processes in industry and poisons water bodies and soil if waste saturated with chromates (hexavalent chromium salts) gets there. Chromium makes up about 0,2 percent of Martian dust. Before sending a ship with a crew to the Red Planet (although NASA does not yet have specific plans in this regard), it is necessary to find out whether the content of chromates in the dust is high. The acceptable threshold is not higher than 0,015 percent. It is also important how small the dust particles are. During the stay of American landers on the moon, the smallest lunar ... >>

Camera in watch 05.07.2002

The Japanese company Casio for the first time managed to squeeze a color digital camera into a wristwatch. The memory of the WQV-10 watch can hold up to a hundred pictures, which are shown on the same display where the current time is recorded. The watch also remembers the date and time each picture was taken. There is a digital "telephoto lens" that approximates the objects being shot twice. Photos can be transferred to a computer or to other similar watches. Of course, the quality of miniature photographs is not high: each of them consists of only 25 thousand elements (in "real" digital cameras there are from half a million to six million). But the ability to carry around a camera that does not burden you with size and weight is captivating. ... >>

Big eyes wake up earlier 04.07.2002

Everyone knows that numerous birds greet the dawn with their singing. Less well known is that the bird choir does not enter at the same time. The gap between the first and last singers is up to a hundred minutes. In our area, robins are usually the first to wake up (not without reason their middle name is robins), the last to join are finches and blue tits. Recently, British ornithologists from the University of Bristol made observations in seven forests of Europe. The beginning of the singing of 57 bird species and the brightness of daylight at each moment were recorded. Then the obtained data was compared with information about the size of the eyes of each "choirboy". It turned out that those species of birds in which the eyes are larger in relation to the size of the body begin to sing earlier. Scientists explain this fact by the fact that the vision of big-eyed birds is sharper. Both at dawn and during the rest of the day, birds sing to attract a mate and claim their territory. But in the semi-darkness, singing can be dangerous: it will alert nocturnal predators, and enthusiastic ... >>

Climbers harm nature 03.07.2002

Canadian environmentalists came to this conclusion. After examining the cliffs near Niagara Falls, they found that on the surfaces where the most frequent climbing routes pass, the number of some plants is reduced by 80 percent, the number of moss species by 70, and lichens by 60. In addition, on the soles of climbing boots , on clothes and equipment, athletes bring seeds of foreign species onto the rocks. ... >>

Lamppost of the XNUMXst century 01.07.2002

At the "Lighting + Architecture" exhibition held in April this year in Germany, the inventor J. Doda from Nigeria presented a street lamp of the near future. During the day, the flashlight accumulates solar energy in batteries, and this can also happen on a cloudy day. At night, a highly economical xenon lamp is powered by the battery. The self-diagnostic system detects when a lamp is close to burnout and calls electricians via email or cell phone. In the event of an attempt by hooligans to break a pole or a car colliding with it, the lamp transmits video footage of the incident to the police. Such a lantern will cost quite a lot - about 9800 euros, so it is planned to place advertising on each pole, which will gradually pay off the costs. ... >>

Floating City Freedom Ship 30.06.2002

Norman Nixon, owner of Engineering Solutions, has designed a completely unique ship, a real floating city, called the Freedom Ship. Freedom Ship will have 55 decks, its length is over 1 km, its width is about 300 m, displacement is 2,7 million tons (for comparison: the displacement of the world's largest supertanker Jahre Viking is 565 thousand tons). The weight of the floating city is 3 billion tons. About 70 thousand people will be constantly on board, of which 50 thousand islanders own real estate on the ship, and 20-25 thousand personnel, including the security service and a small army. In addition, tourists will live in hotels on board. The cost of the project is 9 billion dollars, and 22 million dollars have already been allocated for equipping the construction site alone. To date, 20 thousand residential apartments have already been sold, each costing from 80 thousand to 6 million pounds. There are at least 50 architectural and design styles for living spaces. There will be: library, university, computer ... >>

The moon will prevent the global energy crisis 29.06.2002

A research team led by D. Criswell from Houston (USA) proposed the LSP (Lunar Solar Power) system, which will allow collecting energy from solar panels located on the surface of the Moon, and then transmitting it to Earth in the form of a directed energy beam. According to Criswell's calculations, in 2050 the Earth will be inhabited by 10 billion people. To provide them with energy, it will require at least 20 TW. The Moon receives 13000 TW from the Sun. The transfer of only 1% of this energy to Earth will allow us to completely abandon the power plants that pollute the environment on our planet. It is assumed that the LSP system will consist of 20-40 lunar power stations located on the eastern and western limbs of the Moon. Each will include arrays of solar arrays that collect energy and transmit it via cables to microwave generators that will radiate the energy back to Earth. It will be received by special ground antenna complexes. Each such complex ... >>

Display for the blind 28.06.2002

The world's first monitor for the blind, developed by Japanese scientists from the KJS corporation together with the Japanese National Space Administration, has appeared in the Osaka Central Library. The monitor screen is a standard 14-inch liquid crystal surface equipped with more than 3000 1,6 mm diameter plastic raised dots. A tactile display will allow visually impaired people to understand any previously inaccessible visual information. ... >>

Three-dimensional image on the monitor screen 26.06.2002

The New Zealand company Deep Video Imaging (DVI) has registered a patent for the design of monitors capable of reproducing a three-dimensional image, which is obtained by superimposing images reproduced by two superimposed liquid crystal panels. This 15D monitor can work with a standard high performance video adapter. All you need is the right software for this. The company is already offering prototypes of LG/Philips LCD 3-inch 70D monitors. According to D. Hancock, head of DVI, the production cost of a XNUMXD monitor is about XNUMX% higher than that of a conventional flat panel display. ... >>

Tea won't overflow 25.06.2002

D. Kumar from London has designed a teapot in which, thanks to the special shape of the spout, spilling of tea is completely excluded. At a distance of about 1 cm from the end of the spout, there is a groove that narrows the jet and accelerates the flow of tea. When the teapot returns to the upright position, the teapot deflection jerk impulse action acts as a barrier to the tea and it does not spill. Such a design of the spout can be widely used not only in kettles, but also in pistols for pouring gasoline into a gas tank, making the process of refueling cars more fireproof. ... >>

Airplane powered by steam jet 24.06.2002

A model aircraft with a steam jet engine has been manufactured and successfully tested at the Tokyo Institute of Technology. A small paper airplane is propelled by jets of water vapor produced by an infrared solid-state laser. The project manager, Professor T. Lbe, believes that in 30 years, stratospheric supersonic liners will be built on this principle. ... >>

Mobile phone RF protection 23.06.2002

The Hong Kong company Group Sense developed the Greenphone e688 mobile phone, which tried to radically solve the problem of protecting the user from radio emission by dividing the device into two modules, the connection between which is carried out using Bluetooth technology. One of the modules - eFone - combines a display, a handset and a keyboard, and the other - eBox serves to accommodate a SIM card and contains a transceiver. This module can be located by users in such places that the radiation exposure from it is minimal. ... >>

Recoloring diamonds 21.06.2002

Experts from the well-known South African diamond company De Beers have found a way to turn brown diamonds of little value, suitable only for technical needs, into transparent or purple ones. A technical crystal is covered with any halide salt-chloride, bromide or sodium or potassium iodide, depending on what color you want to get. Then the mixture is placed in a graphite cylinder and subjected to a pressure of 85 bar, while passing an electric current through the graphite, which heats the mixture to 2000 degrees Celsius. The contents of the cylinder then slowly cool down. The salt layer is then dissolved and washed with hot water. A flawless gemstone is born. The process has not yet left the walls of the laboratory. But the developers believe that when selling such diamonds, it will be necessary to honestly inform the buyer that the stone has undergone chemical treatment. Apparently, its price will be less than natural diamond. ... >>

How long will a rose last 20.06.2002

It happens that an expensive rose brought home soon "hangs its head" and fades. What's the matter? German scientists claim that air bubbles that have fallen into the conductive vessels of the stem are to blame. Air interferes with the circulation of water and causes the destruction of vascular cells. The device, developed at the Agricultural University of Hohenheim, uses ultrasound to detect these bubbles and predict how long roses will last in a vase. Now it remains to develop a portable version of the device so that the buyer can check the flowers right at the kiosk. ... >>

Tunnel project under the Alps 18.06.2002

Ten years from now, trains from Zurich to Milan are due to go through a tunnel under the Alps, construction of which will begin this year. The tunnel, which will actually run between two Swiss towns - Erstfeld and Bodio, will be the longest (57 kilometers) and deepest (in places it will run two kilometers from the surface) in the world. The temperature at such a depth rises to almost 50 degrees, but there is no special cooling system: engineers believe that trains traveling at a speed of 150 kilometers per hour will pump cold air from the surface. The project, adopted by a national referendum back in 1987, will shorten the journey from Zurich to Milan by an hour and a half. I wonder how long the construction will actually take. After all, the project of the tunnel under the English Channel appeared in the time of Napoleon. ... >>

wheat ice cream 17.06.2002

Studying the reasons for the cold hardiness of winter wheat, biochemists from the University of Guelph in Canada found a special protein in the plant. When the temperature drops below zero, it covers the surface of the formed small ice crystals and prevents their further growth to large acute-angled crystals that would break the cells, thereby killing the plant. But the same problem arises in the manufacture of ice cream. The smaller the ice crystals, the tastier it is. Therefore, scientists have proposed the use of wheat protein as an additive in ice cream. One-tenth of a milliliter per liter of ice cream mixture is enough, and it turns out to be especially soft in taste. ... >>

electronic fly 16.06.2002

A group of engineers from the University of California (USA) is working on a flying microrobot. It weighs about a quarter of a gram, with a wingspan of 2,5 centimeters. The wings are driven by piezocrystals, which are supplied with a high frequency current. Energy is provided by three solar panels, which at the same time serve as a support during landing and takeoff. So far, the “robo-fly” has not been able to take off: there is not enough lift, but the developers are confident that this problem will be dealt with by the end of next year. ... >>

Lightning strikes the sky 14.06.2002

During a tropical thunderstorm on the coast of Puerto Rico managed to photograph the "inverted" lightning. She hit from the cloud not into the ground, but into the sky, to a height of up to 70 kilometers. At its core, it was a powerful electrical breakdown between the clouds and the ionosphere. The researchers suggest that such discharges occur quite often, they just cannot always be registered. "Inverted" lightning can play an important role in the overall energy balance of the planet. ... >>

Virtual keyboard 12.06.2002

Pocket computers are easy to carry, but inconvenient to use: either there is no keyboard, or it is so small that it is difficult to work with it. The German firm "Siemens" demonstrated at the annual computer exhibition developed in Israel "virtual keyboard". It is projected onto a table or any other horizontal surface by miniature laser beams. By moving your fingers, pressing the "keys" displayed on the table, you cross the laser beams, and these intersections are converted into letters on the PDA display. Another option was proposed by the Swiss firm "Sensbord Technologies". "Bracelets" are put on the hands, which convert the movements of the fingers into letters. But working with this keyboard requires practice and some imagination - to imagine a keyboard that does not exist in front of you. ... >>

Cats are hunting 10.06.2002

In a rural area near Canberra, Australia, a study was made of the hunting habits of local domestic cats. Marking animals with radio beacons showed that half of the cats in their walks and hunting expeditions do not go beyond their own yard. The rest of the cats roam more widely, covering an average of 7 hectares. These hikes are undertaken mainly at night. Zoologists asked the owners of 214 cats to register the trophies they bring home during the year. It turned out that most cats catch only about a dozen victims a year. But some have been much more active, bringing in an average of one trophy per week. About 65 percent of prey is mice, rats and other small rodents. The rest is frogs, various reptiles, fish and representatives of 47 bird species. ... >>

Breath betrays the criminal 09.06.2002

English criminalists have developed a method for detecting DNA molecules that any of us release with microscopic skin particles, hairs and even droplets of saliva that fly apart when coughing and just breathing. A criminal can wear rubber gloves to avoid leaving fingerprints, but he is unlikely to be able to breathe, drop skin flakes, or commit crimes in an airtight spacesuit. The method has already been tested by the London police when investigating computer thefts. As a result, the detection of such crimes increased by 20 percent. ... >>

Follow the eyes of the drunk 08.06.2002

Drinking alcohol is known to disrupt coordination between the hands and eyes. English engineers and physiologists from the University of Bristol propose to use this phenomenon to test the driver's sobriety. When the road turns, the driver's eyes tend to look around the bend. Following the gaze, the hands begin to turn the steering wheel. A device has been created that monitors the eyes of the driver and the steering wheel. In a normal case, the turn of the eyes is ahead of the turn of the hands by 0,75 seconds. After taking a dose of alcohol permitted by the English traffic rules, the lead is reduced to half a second, and after four glasses of vodka - to a quarter of a second. The device can warn the driver that it is better for him to stop and give way to someone behind the wheel. Another version is even able to turn off the engine on its own and contact the police. Now the university is busy patenting the device and looking for those who want to produce it. ... >>

Video in breast pocket 05.06.2002

The Japanese company "Sony" has started production of a subminiature digital video camera DCR-IP5. Dimensions are clear from the photo, weight - 310 grams. The lens is equipped with a tenfold optical zoom, there is also a 12x digital zoom. A cassette smaller than a matchbox holds an hour of high-quality video (over 500 vertical lines). True, due to the small size of the device, the charge of the standard battery is only enough for 35 minutes of shooting. This means that the entire cassette cannot be removed from one charge. When recording, the MPEG-2 video information compression method developed for computers is used. Only every 12th frame and information about where and how its individual elements move is recorded on film. When played back, the full picture is restored from this information. ... >>

Delivery of medicines to destination 03.06.2002

Specialists from the English company Gendel have developed a new way to deliver drugs to the diseased organ. Usually drugs are administered "without a sight": the patient swallows a pill or receives an injection, and the drug enters the bloodstream, and with the blood it spreads throughout the body. It would be much more effective not to "smear" the dose throughout the body, but to deliver the medication exactly where it is needed. This would get rid of many side effects and reduce the required dose of the drug. English doctors take a certain amount of blood from a patient (about 20 milliliters of the five liters of blood available to the average person) and treat it with an electric field, which causes pores to open in the shell of red blood cells. Through them, the medicine is injected, and the red blood cells stuffed with it return back to the bloodstream. Then the diseased organ is irradiated with ultrasound, which destroys red blood cells. The medicine goes exactly where it is needed. The method has only been tested on animals so far, and clinical trials should begin. ... >>

Water against flood 02.06.2002

To protect against flooding, the banks of a raging river are usually fenced with sandbags. Swiss inventor Traugot Eisenegger proposes to replace bags with plastic pipes up to one and a half meters in diameter with water pumped inside. The ends of the pipes are made in the form of a "dovetail" and tightly fit together, without letting water through. If necessary, the fence can be made two-story. ... >>

musical carps 01.06.2002

Biologists from Cambridge (USA), having immersed a sealed speaker in an aquarium with fish, taught three carps to understand musical styles. The Karpas played John Hooker's American Blues and Bach's Oboe Concerto, feeding on one type of music. As a result, the fish became so adept at distinguishing musical styles that they were able to distinguish other authors, for example, the blues of Muddy Waters from the sonatas of Beethoven. The authors of the study believe that fine hearing is necessary for fish to survive in an underwater world full of dangers. ... >>

Walking stick with echo sounder 31.05.2002

Trials are nearing completion on a brand new cane for the blind, jointly developed by three British companies. Its work is based on the principle of echolocation, similar to the way bats navigate in space. Therefore, the product was called Batcane, from the English. Bat is a bat and Cane is a cane. Batcane in appearance is practically no different from a traditional cane, only 35 cm from its end a small ultrasonic transceiver is fixed. When the operating mode is turned on, the device begins to send signals in the form of vibrations to the cane handle at a certain frequency. When approaching an obstacle, the vibration frequency increases. This serves as a signal to the blind to reduce the distance to the object. There are four vibrating sensors in the Batcane handle, which allows you to detect obstacles not only in front, but also on any side of the person. ... >>

Digital camera the size of a credit card 29.05.2002

Logitech has introduced a new ultra-compact digital camera Logitech Pocket Digital the size of a credit card. The novelty has a unique aluminum body with closing shutters that hide the lens and fits easily into a shirt pocket. For all its compactness, the camera has a matrix of 1,3 million pixels, and the built-in memory is enough for 52 frames in the highest resolution. A lithium battery is used as a power source, which is recharged when connected to the computer's USB port. ... >>

Camera with binoculars 27.05.2002

The device, presented at the Japanese exhibition Photoexpo 2002, was named DigiBino DB100 and is actually a hybrid of a digital camera and binoculars. The novelty has a 1,6-inch LCD display, which can be used both for setting parameters and as a viewfinder. Built-in flash memory with a capacity of 16 MB allows you to save from 100 to 300 images in JPEG format with a resolution of 1024x768 or 640x480 pixels. The device provides a sevenfold increase and is equipped with a digital filter system. When connected to a portable computer, its capabilities are greatly expanded: you can shoot small videos or hundreds of static images and transmit them wirelessly to headquarters. Dimensions of the new binoculars 69x127x44 mm, weight 255 g. ... >>

An empty glass will call the waiter 26.05.2002

American engineers, in an attempt to make life easier for drinkers, came up with an original glass with a microcircuit built into its bottom, which, when the drink level drops below a critical level, sends a message to the waiter on a pager. Errors excluded. After all, each microcircuit has its own number, and on the dishes - a barcode. ... >>

Stove+oven+refrigerator 24.05.2002

Whirlpool has developed a new processor with sophisticated microprocessor control that combines a stove, oven and refrigerator. It is enough to place a frozen chicken in the chamber in the morning, select the name of the dish from the list and set the time for lunch on the timer. The intelligent oven-refrigerator will keep the bird in the frozen state for the optimal time, then turn on the defrost mode, then cook. ... >>

GM Precept concept car 22.05.2002

At the Detroit Auto Show in January 2002, the GM Precept concept car was unveiled. According to the US government's program to create a new generation of cars, such cars can appear on the streets in 5 years. The GM Precept is equipped with an efficient internal combustion engine with lean-burn direct injection, which is mounted at the rear and is driven to the rear axle. Under the hood of the Precept is a second, electric three-phase motor with a power of 35 kW. The most important element of the whole system is a special node, located at the rear of the chassis, whose main tasks are to regenerate energy during braking, when it works like a generator, and add power during acceleration. The on-board computer with a speed of 266 MHz is in a constant exchange of information with almost all machine systems and chooses the option of their interaction that optimizes energy consumption and reduces emissions of harmful substances. Teardrop shape, rejection of p ... >>

The fog is killing the trees 20.05.2002

As geographers from the University of Bern (Switzerland) have established, not only acid rains, but also fog are dangerous for trees. Experiments conducted in pine forests in the east of Bavaria (Germany) showed that the smallest droplets of fog absorb any pollution from the air 25 times more efficiently than relatively large raindrops can do. The researchers had guessed this before, but could not measure how much water with pollutants dissolved in it brings fog. The amount of water that has fallen with the rain is easy to measure with a rain gauge, which is just a bucket of standard sizes. To measure the amount of water carried by a fog cloud, scientists used sophisticated equipment that recorded the size of the fog droplets, the number of droplets of each size class, and the speed of the air currents carrying the fog. As a result, it turned out that the fog brought as many pollutants to the forest during the five-month measurement period as rain. These contaminants are mainly acidic ... >>

Gas and oil from old tires 19.05.2002

It is estimated that more than a billion discarded car tires have accumulated in illegal landfills in the United States, and the number is increasing by 280 million annually. When one of these dumps, which contained from five to seven million tires, caught fire in 1983, they could not put out the fire for nine months. Attempts to somehow dispose of the used tires were generally unsuccessful. Oklahoma-based ITG has now developed a vacuum pyrolysis plant for old tires that have been cut into small pieces. As a result, heat, combustible gas, liquid fuel such as diesel, soot and scrap metal are obtained - the remains of a steel cord. Combustible pyrolysis products can be used in a power plant, and liquid fuels are also suitable for cars. ... >>

Avalanche Prevention 17.05.2002

To trigger an avalanche at a safe moment, a cannon is usually fired down a slope with accumulated snow. In France, another method has been proposed. In avalanche-prone places, a radio-controlled machine with a supply of hydrogen and inflatable rubber balls is installed. When the thickness of the snow on the slope reaches a dangerous value, by radio signal one of the balls is filled with hydrogen mixed with air, and this explosive mixture is set on fire. A loud bang triggers an avalanche. In stock, the machine can have up to 26 inflatable balls with a diameter of two meters. The French intend to install this system in all major ski resorts in Europe. ... >>

Hitachi water cooled laptop 16.05.2002

Since autumn of this year, the Japanese company Hitachi intends to start production of water-cooled portable computers. The greater the power of the microprocessor, the more it heats up during operation. Usually the microprocessor is blown by a separate fan, but still the laptop case gets quite hot during operation. A water cooling system should be more efficient and less noisy than a fan. According to the company, a thin steel tube 4-1 meters long is designed to remove heat from the Pentium-1,5, wrapping around the processor and filled with a water-based cooling solution. A solution heated to 60 degrees Celsius will be pumped to the back of the computer screen, where the heat will dissipate into the air. Efficient cooling will increase the reliability and life of your computer. The company does not say whether it will be necessary to change the water in the computer to antifreeze in winter. ... >>

Electrostatic fly trap 15.05.2002

Walking on carpet, especially synthetic carpet, builds up an electrostatic charge on the body, so that touching grounded objects causes a spark. This effect can be used to control flies and other insects. The idea belongs to two researchers from England and the USA. If you force a fly to run a few steps across a dielectric coating, an electrostatic charge will accumulate on its paws. After passing through the powder from the spores of a fungus that is deadly to insects, the fly will attract these spores and soon die. You can also use insecticide powder - it will act faster than the fungus, but from an environmental point of view, this is undesirable. The result of the experiments was a scientific article called "Triboelectrification of house flies." Experiments have shown that the best static charge is formed when flies walk on polyvinyl chloride. To lure insects to this path, a pheromone can be introduced into the plastic - an odorous substance that is attractive to one or another type of insect. charge reach ... >>

Robots play in the sand 14.05.2002

Robots created at the Jet Propulsion Laboratory in Pasadena (USA) are designed to fly to Mars. They can take soil samples and even carry out some excavation work, such as digging ditches according to a given plan. Robots are able to act as a group, like ants. If necessary, they will be able, having leaned together, straighten the spacecraft that fell during landing or move a stone that impedes the passage of the rover. In the meantime, they are being tested on Earth. ... >>

Internet machine 11.05.2002

The largest manufacturer of public telephones, the Spanish-German company Siemens-Elasa, is facing a serious problem: since the number of mobile phones in the world has already exceeded the number of conventional wired telephones, the demand for payphones is decreasing, their dismantling has begun in some countries, and new almost never bought. Therefore, the Siemens-Elasa plant in Zaragoza began production of Internet payphones. Such a phone has a color screen (according to the company, he is not afraid of hooligans and can withstand a hammer blow) and a standard computer keyboard. Payphone allows you to access the Internet, receive and send e-mail. He also knows how to look for the necessary information, book a hotel room via the Internet and book tickets for planes and trains. ... >>

Allergy to people 10.05.2002

As you know, people are quite common allergy to dogs and cats. But Scottish veterinarians have recently discovered that pets can also suffer from human allergies. According to their data, about one in twenty cats or dogs are allergic to their owners. Dandruff or microscopic flakes of flaky human skin can cause rashes or skin irritation in animals. A sure sign of allergies - these symptoms disappear when the owner is away. In addition, it is possible to suspect an allergy to the host in cases where the animal constantly itches, but there are no fleas on it. ... >>

Centuries-old lotus sprouts 09.05.2002

Botanists found 20 lotus seeds in muddy deposits at the bottom of a lake in the Chinese province of Liaoning. Judging by the growth rate of the sedimentary stratum and according to radiocarbon dating, these seeds are from 200 to 500 years old. Four seeds gave rise to seedlings, and then to adult plants. True, the centuries spent in the depths of the soil affected the appearance of lotuses: due to mutations, the shape of some leaves is distorted, the stem is weakened, and the color of the flowers is changed. ... >>

Three-wheeled electric car 08.05.2002

Single three-wheeled electric car "Sparrow" ("Sparrow") is produced in the United States. The creators of the car proceeded from statistics: 87% of Americans live at a distance of 29 kilometers or closer from their work, and 93% of those who drive to work in their car drive alone in four-seater or even more spacious cars. This means that a single-seat electric car will be popular. True, it costs 17 thousand dollars, like a quite decent gasoline subcompact car, but you can save on operating costs. Electricity is cheaper than gasoline, especially for such a light crew (weight without a driver is 612 kilograms). Insurance and parking fees are taken as for a motorcycle. Thirteen lead-acid batteries after charging for 6 hours provide an hour of driving at a speed of 95 kilometers per hour (maximum speed 110 kilometers per hour). ... >>

Let's charge the battery with our feet and hands 06.05.2002

Portable electronics are now so ubiquitous that it's hard to keep track of the battery levels of multiple devices. The American company Aladdin Power has developed a foot-operated generator suitable for charging any portable electronics that have built-in batteries. These are portable computers, cell phones, photo and video cameras, and pocket radios. The device is the size of a notebook and weighs about 300 grams, it gives a direct current of 18 volts, its power is up to 6 watts. A good shaking of the leg for five minutes, you can get the "dead" laptop to work for about 20 minutes. The term is not too long, but the machine will help you out if you get stuck somewhere without a power source. If you do not want to work with your feet, you can use the manual generator of the English company Free Play. By twisting its handle for just one minute, you can talk on a cell phone for ten minutes. The generator is equipped with a built-in battery that can be charged as ... >>

New car needs to be ventilated 05.05.2002

This conclusion was made by Australian environmentalist Steve Brown, having studied air samples from the interiors of new cars. Pleasant for many motorists, the smell of fresh paint, varnishes, plastics and leather substitutes consists of at least 22 organic compounds hazardous to health. Here and xylene, and acetone, and benzene ... They can cause headaches, burning eyes, nasal congestion, coughing and nausea. The ecologist recommends, having bought a new car, for the first six months, if possible, do not close the windows in it. And the automotive industry should consider replacing hazardous solvents with harmless ones. ... >>

The inscription on the diamond 04.05.2002

To supply each diamond with an individual number or the owner's name allows a new technology developed by the Zhersan jewelry company in Liechtenstein. The diamond is covered with the thinnest layer of gold, sputtering it in a vacuum chamber. Then, also in a vacuum, this layer is used as an electrode, applying a negative electric potential to it, and the diamond is bombarded with a beam of heavy ions. The beam can be controlled like an electron beam in a TV kinescope by writing any signs on the diamond. You can read the inscription, consisting of grooves 30 nanometers deep, under a microscope, but it is not visible to the naked eye and does not spoil the look of the jewelry. The gold is then removed with a special solvent. ... >>

Not only will it get warmer, but the day will also increase 01.05.2002

According to calculations by astronomer Olivier de Viron of the Belgian Royal Observatory, global warming will be accompanied by a lengthening of the day. A one percent increase in carbon dioxide in the atmosphere will lead to increased winds in the belt from 10 to 60 degrees of latitude in both hemispheres. Moreover, these winds will blow mainly against the direction of the Earth's rotation, slightly slowing it down. Just a little bit - the day will lengthen by only one millionth of a second a year. It will take ten years for the most sensitive clocks to notice this elongation. ... >>

The world's first cyborg 30.04.2002

British scientists "connected" the nervous system of cybernetics professor Kevin Warwick with a computer, making him the world's first cyborg - part human, part robot. The median nerve on the professor's left wrist was implanted with a 3-mm silicon chip equipped with 100 electrodes, each no more than a hair's thickness. The wires were stretched under the skin of the arm and connected to a transmitter that transmits radio signals to the computer that carry information about Professor Warwick's nervous processes. For the first time in the world, the motor and emotional systems of the vital activity of the human body will be subjected to computer analysis. Scientists hope that this research will lead to a breakthrough in the treatment of diseases such as paralysis resulting from spinal cord injury. ... >>

The polymer restores its structure 29.04.2002

A group of scientists from the University of California, led by Fred Wadlem, has created an artificial polymer that, when physically damaged, is able to almost completely restore the original structure. To do this, it is enough to heat the material to a temperature of 120 ° C, and then cool it. As the temperature decreases, the crack "overgrows" with the formation of a small seam on the surface. The essence of the process is as follows: the new plastic consists of two types of molecules, the main components of which are carbon and hydrogen. When heated, bonds are released between the molecules on opposite sides of the crack, which, upon subsequent cooling, form cross-links, due to which the original structure of the product is restored. True, the strength of such a seam is somewhat lower than the strength of the entire material as a whole, but scientists hope to solve this problem in the future. ... >>

Fabric with built-in heating 28.04.2002

The American company Maiden Mills presented a fabric equipped with a built-in heating system. Polartec jackets and sheepskin coats made with it are quickly becoming popular with athletes and the military. Instead of traditional wires, stainless steel microfibers are woven into the fabric. These microfibers are thinner than a human hair. In terms of softness, they do not differ from ordinary threads and are not damaged during washing and wearing. Miracle jackets work in two modes: moderate, in which the fibers are able to heat up to a temperature of 42 ° C for 5 hours, and intensive, when clothes are heated to 2,5 ° C in 46 hours. Maiden Mills plans to include heated gloves, air-conditioned clothing, as well as heart rate and body temperature indicators. The only problem at the moment is the fragility and bulkiness of lithium batteries used as batteries. ... >>

flexible ceramics 26.04.2002

A group of chemists from Cornell University has developed a new composite material - "flexible ceramics", which consists of microscopic pieces of silicon and polymers and has unique properties. The new material is transparent like glass, resilient, elastic, strong enough and, unlike ceramics, does not crack. After intense heat treatment, flexible ceramics acquire a porous structure with holes whose diameter does not exceed 10–20 nm. Therefore, the new material can be successfully used for the manufacture of industrial filters and membranes. ... >>

New media format DataPlay 25.04.2002

In June 2002, a new media format called DataPlay will enter the market. Experts believe that very small, but extremely capacious drives should make a real revolution. Thanks to new compression technology, the tiny 500MB DataPlay fits 5 hours of LD-quality music, 11 hours of MP3s, 1 hour of very high-quality videos, 1000 high-resolution photos, 100 e-books, or one video game. The DataPlay player is connected to a computer via a USB port. ... >>

Talking washing machine 24.04.2002

In India, the world's first talking washing machine will soon appear in stores. It was created for the Indian middle class, who are not yet too confident with complex household appliances, but cannot yet afford servants. Built into the machine is a dictionary of 90 sentences in English and Hindi that describe the entire washing process. The creators of the novelty believe that it should especially appeal to Indian bachelors, who will be happy to press the buttons to the melodious female voice giving clear instructions like "Pour in the powder, close the lid" or "Washing is completed." ... >>

Robot Vacuum Cleaner 23.04.2002

Matsushita, a manufacturer of Panasonic brand products, has unveiled a prototype robot vacuum cleaner with an autonomous control system. The robot is equipped with 50 sensors that allow it to move around the apartment, avoiding collisions with walls and furniture, as well as detecting places of pollution. Externally, the robot looks like a regular vacuum cleaner without a hose and can work for 1 hour without recharging. ... >>

Virtual keyboard on beams of light 22.04.2002

CeBIT presents a full-sized virtual keyboard for mobile devices, developed by the Israeli company Developer VKB. The image of the keys is projected directly on the surface of the table. Rays of light register hand movements. Information is transmitted to the device to which the "keyboard" is connected. The same projector can replace a mouse. The creators suggest that the new device will find demand among users of compact devices that do not have a keyboard. It can be connected to pocket and tablet computers, mobile phones, and possibly even laptops. ... >>

In the mirror of the moon 20.04.2002

Looking closely at the narrow crescent of the Moon during the new moon, you can see that the part of our natural satellite not illuminated by the Sun is still slightly visible (especially if you look at least through weak binoculars). It is illuminated by the same sunlight, but reflected from the Earth. French astronomers, having studied the spectrum of this weak light, found, firstly, that blue tones predominate in it (it’s not for nothing that the Earth is called the “blue planet”!), And secondly, this spectrum lacks light with a wavelength of less than 725 nanometers. It turns out that the fact is that these wavelengths are absorbed by the Earth's vegetation during photosynthesis. Thus, our forests and meadows are visible from cosmic distances. The authors of the discovery believe that the discovered phenomenon can be used to search for plant life on other planets. ... >>

Skyscraper with wind turbines 19.04.2002

A group of European designers proposes a skyscraper project with six wind turbines built into the building. The aerodynamic shape of the three towers directs the wind to the turbines. The designers expect that the building will be able to supply itself with electricity and something else will be left for the neighbors. But what will it be like to live with constant noise and vibration? ... >>

On the Benefits of Prayer 18.04.2002

A study conducted by doctors in the United Arab Emirates found that Muslims have healthier knee joints than infidels. And if the knee of a Muslim still gets sick, it is easier to cure it. This is explained by daily training: adherents of Islam are required to pray five times a day, kneeling for a long time (according to legend, Allah required even fifty prayers a day, but Mohammed managed to bargain for a tenfold reduction). Arab doctors do not insist on a total conversion to Islam, but recommend appropriate gymnastics. ... >>

Health from a young age 17.04.2002

According to a survey conducted in the United States, Internet pages devoted to health and a healthy lifestyle are very popular among American youth. In general, young people are more interested in health issues on the Internet than adults. Obtaining medical, physiological and hygiene information from the Internet is no less popular among the 1209 young people aged 15 to 24 surveyed than downloading music or online games, and more popular than shopping in online stores. Half of those surveyed have at one time or another consulted the Internet about specific diseases or medical problems, and 40% do so at least once a month. They are especially interested in acute issues for young people - contraceptives, prevention of AIDS and other venereal diseases. About 25% of those interested in medical sites are looking for information on the fight against obesity, psychiatric problems, drugs, alcohol and violence. Many teenagers are embarrassed to access medical ... >>

namesake letter 16.04.2002

Canadian researchers have found that people are more likely to respond to an email from their namesake than from someone with a completely different last name. Kenneth Oates and Margo Wilson of McMaster University in Ontario sent out an email to 2960 people with questions about their local sports clubs. Some of the letters were signed by the full namesake of the addressee, some - by a person with the same surname and some - with the same name as the addressee. It turned out that a letter from a namesake is answered 10,3% more often, a letter from a person with the same last name is answered 9% more often than from a "stranger". If only the names of the sender and recipient match, this has little effect on the willingness to respond. The authors of the study concluded that for many of us, the alleged relationship with the namesake has a certain psychological significance. ... >>

Scarecrow can run and swim 15.04.2002

Two Irish students have built a robot that runs along high-voltage wires and scares away birds sitting on the wires with a siren and a flash lamp. The robot takes energy for its actions from the wires themselves through an induction coil. They say that bird droppings harm the wires and the birds must be chased away. And in the United States, a crocodile robot is being tested to scare away pelicans, which in the south of the country attack fish ponds and eat them clean. The green floating scarecrow carries a solar panel on its back, providing energy for swimming. The artificial crocodile can even shoot water at birds. ... >>

Jellyfish of the ancient seas 14.04.2002

In a quarry in Wisconsin (USA), where sandstone is mined, thousands of jellyfish prints were found. Some of them are more than half a meter in diameter. Such soft-bodied and ephemeral animals as jellyfish almost never leave a trace in the fossil record (this is only the second largest find of jellyfish prints in the world). More than 500 million years ago there was a shallow tropical sea. The storm threw thousands of jellyfish onto the sandy beach. Around many of the prints, traces of jellyfish attempts to crawl into the water are visible. Then on Earth there were no birds capable of pecking at this unexpected treat. Therefore, the jellyfish lay for some time on the sand, and the next storms covered them with new layers of sand. The dead animals gradually rotted away, leaving voids in the sand that repeat their shape. In the future, over millions of years, the sand caked, turning into a stone with the imprints of dead jellyfish inside. ... >>

On the lift across the street 12.04.2002

The Swiss company "Horlacher" proposes to arrange mechanized elevated crossings at the crossroads. At the edge of the road, you step into a two-seat elevator-like cabin, and it goes over a curved steel bridge to the other side of the street. The project is supported by the Swiss Ministry of Transport. ... >>

Bicycle for microbe 11.04.2002

The smallest bicycle-type chain drive was made in the American Sandia laboratory. The length of each chain link is 50 micrometers. The chain and the gears connected by it are made of silicon using microelectronic methods. This transmission is designed for the micromachines of the future. ... >>

It's better for a siren to hiss than to howl 09.04.2002

The British company Sound Alert Technology, having studied in detail the features of the perception of sounds by the human ear, proposed a replacement for howling sirens for special services vehicles. The firm's sound emitter, called "Localizer", emits a broadband sound that resembles a hiss. The developers claim that the direction to the source of such a sound is determined much faster and more accurately than to the siren. Experiments carried out in the laboratory and on the roads showed that drivers correctly determine whether the signaling car is behind or in front, in 44% of cases when using a siren and in 82% with the "Localizer". From where the signal is heard - from the left or right, the driver correctly determines in 79% and 93% of cases, respectively. 20-27% of drivers give way to a car with a siren, and 73-81% give way to a car with a "Localizer". True, the latter circumstance is more likely connected with the effect of novelty: if they get used to it, they will stop yielding. The same signaling can be used in other situations where it is important to draw attention to the ... >>

Akrikhin against rabies in cows 08.04.2002

Mad cow disease, which has affected many countries, as it turned out, is also transmitted to people, causing them a severe neurological disease - Creutzfeldt-Jakob disease. So far, there have been no funds from her. But last fall, in a hospital in San Francisco (USA), the first patient with this disease was cured. Moreover, akrikhin, a medicine used for malaria for more than 60 years, turned out to be a life-saving remedy. The discovery was made in the same laboratory where Stanley Prusiner, who received the 1997 Nobel Prize for the discovery of prions, works. These proteins, present in any organism, sometimes take on an abnormal configuration, which leads to various diseases, including rabies in cows. Moreover, abnormal prion molecules are able to change the structure of normal ones according to their pattern, which is why the disease occurs. The first experiments were carried out on mice infected with the "wrong" prions. After a few days of human treatment with quinacrine, these pathogenic prions disappeared and were no longer detected in the patient. ... >>

titanium paper 07.04.2002

Titanium dioxide, in addition to its whiteness, which makes it possible to make excellent white on its basis, has another important property: when irradiated with daylight, it reacts with air moisture, forming free radicals. These active compounds, strong oxidizing agents, are able to destroy microorganisms and decompose harmful substances. In Japan, the production of paper has begun, in which titanium dioxide has been introduced. For example, wallpaper, paper screens and wall calendars are made from it. From an unventilated room with such wallpaper, formalin vapors completely disappeared in three days, which were launched into the air every day for the experiment. In a room without wallpaper, the concentration of formalin increased. Titanium wallpaper decomposes formalin to CO2 and water. On the surface of titanium paper, E. coli dies within a day. The possibility of issuing titanium paper in Germany is now being considered. ... >>

One less moon 05.04.2002

Uranus lost one of its moons. The International Astronomical Union has decided that the celestial body, which seems to be found in several images taken by the robotic Voyager 2 probe, is not a satellite of Uranus. The photographs, taken back in 1986, became the object of careful study only 13 years later, in 1999. Then, in seven photographs, an object with a diameter of about 40 km was found, orbiting the planet at a distance of 75 km. There has been no other confirmation of the existence of a new moon since then, and the images are considered controversial. In the near future, the Hubble Space Telescope will look at Uranus, but until it confirms the existence of another satellite of the planet, it was decided to consider this satellite non-existent. Thus, Uranus now has 000 officially recognized moons, well behind Saturn (20) and Jupiter (30 moons). ... >>

magnet and appetite 04.04.2002

It turns out that the magnetic compass tells the birds not only the direction of flight, but also the place where they are and how much they need to eat. Swedish nightingales winter in southern Africa. Since on the way they have to overcome 1500 kilometers over the Sahara, before this difficult segment of the route, they stop in northern Egypt and work up fat. The Natural History Museum in Stockholm has built a laboratory setup that simulates the strength and direction of magnetic fields all the way from Sweden to South Africa. In this installation, ornithologists placed young nightingales weighing 20 grams, going to Africa for the first time. The same nightingales were kept outside the magnetic installation. Both groups were provided with any required amount of food. It turned out that under the influence of the magnetic environment characteristic of the north of Egypt, the experimental birds gained an average of three grams of weight, while the control birds remaining in the Swedish magnetic field gained only one gram. ... >>

Pod peas for quantum computers 02.04.2002

A group of American and Korean physicists propose a new electronic component for the quantum computers of the future. They called their creation "peas in a pod". This is an ultramicroscopic structure made of carbon: a tube with a diameter of several picometers (billionths of a millimeter) was stuffed with carbon balls - fullerenes. By moving the balls along the tube with the help of an electrostatic charge, one can smoothly change the electrical properties of this complex from an insulator to a semiconductor and then a conductor. In addition, by moving the balls, you can change the resonant properties of the tube (as the movements of the wings change the pitch of the trombone sound) for the flow of electrons through it, that is, control the frequency of the current. Previously, the same group of scientists showed that from a single "pea" placed in a nanotube, you can make a trigger, the basis of any computer, which will work in 10 trillionths of a second - several orders of magnitude faster than modern computer chips. All of these properties can ... >>

Songs in hours 31.03.2002

Casio specialists have created a device that combines a wristwatch and an MP3 player. The authors of the invention called the technological hybrid WMP-1V MP3 Audio Wrist Watch. Watch-player with dimensions of 49x54x19 mm can accommodate 33 minutes of audio recordings in MP3 format of decent quality. A multimedia card with a capacity of 32 MB is used as a storage medium. One battery provides continuous playback for 4 hours. Looking at the watch, which has an alarm clock, calendar and stopwatch, you can find out the number, timing and title of the track, as well as see the dancing man (Motion Graphic feature), which dances in 10 styles and automatically keeps pace. ... >>

pocket camcorder 29.03.2002

The Japanese corporation Matsushita Electric introduced a multifunctional pocket video camera Panasonic SV-AV10. The device combines a video camera, a camera, a digital voice recorder, an audio player and a miniature printer. It is the printer, according to company representatives, that will help the SV-AV10 "stand out" in the digital video camera market. The printer is really tiny - it measures 85x30x68 mm and weighs 185 g. It uses the principle of thermal printing. It takes 69 seconds to print one 38x70mm picture, and the battery capacity is enough to print 45 pictures. ... >>

Video glasses for gamers and moviegoers 28.03.2002

A new model of Olympus' Eye-Trek Face-Mounted Display series of video glasses is designed for both PlayStation 2 players and DVD players. The FMD-220 features two 180000-pixel active-matrix LCD screens that give you the feeling of viewing a 52-inch screen from a distance of 2m. Unfortunately, the video glasses only work with three models of DVD players: Matsushita DVDPV220, Pioneer PDV-40 and Toshiba MED20AS. An additional accessory is a special protective cover, which almost completely excludes the penetration of light from the outside. ... >>

Thermoid converts heat into electricity 27.03.2002

The Massachusetts Institute of Technology (USA) has developed a thermal diode that directly converts thermal energy into electrical energy. Thanks to these properties, the thermal diode will help solve the problems of cooling and power supply of small computers in the future. The new device uses the effect of "electron gas evaporation", which is observed, for example, in the filaments of electrovacuum devices. However, the same phenomenon can also be observed in conductors heated not only by electric current, but also by any other method. However, even with strong heating (more than 1000 ° C), the current is weak, so this effect is used only in electronic thermometers that measure high temperature. Physicists Peter Hagelyitein and Jan Kucherov were able to create a semiconductor version of such a device. In a thermal diode, thin layers of semiconductor materials are used both as electrodes and as an interlayer. While the thermal diode operates at 200 ° C, however, scientists hope that they will be able to extract ... >>

Broadband laser 26.03.2002

Telecommunications giant Lucent Technologies' Bell Research Laboratories announced the creation of the world's first broadband laser operating in a wide spectrum of infrared waves. Former semiconductor lasers were narrow-spectrum devices that emitted light of only one color. The creators say that the new laser will find applications in healthcare, environmental protection and fiber optic communications. ... >>

The train goes on the water 24.03.2002

Scientists from the Technical University of Leiden (Netherlands) have proposed a hydroplan project - a train that does not move along rails, but in gutters filled with water. From below, special skis are attached to the train, which glide through the water, moving the train almost silently and at high speed. The advantage of aquaplane is that it is an absolutely environmentally friendly mode of transport. ... >>

Flying car 23.03.2002

Preparations for testing the "flying car" developed by the American inventor Paul Moller are nearing completion. The new car, called the Skycar M400, has 8 rotary piston engines with a total power of 1000 hp. They drive 4 propellers rotating at 100 rpm. Like some planes, the Skycar has two fin-linked fins, but no wings at all. With the help of special rotary blades, you can change the direction of movement of the propellers, transferring the Skycar from vertical flight to horizontal. The mass of the new vehicle does not exceed 1 ton, and the dimensions are comparable to those of a middle-class car. For take-off and landing, a flying car will need a platform that is only 30 meters long. Skycar is very economical, consuming 15 liters of fuel per 100 kilometers. According to the inventor, thanks to the use of a satellite navigation system, it will be very safe to travel by Skycar. ... >>

Sensors will help stop the car 22.03.2002

At the Japanese Technology Exhibition in London, a new Toyota vehicle is presented, equipped with systems that ensure its high safety. The brakes will reliably stop the car if special sensors detect an obstacle dangerously close to it, and cameras built into the front bumper allow the driver to see what is happening around the corner. ... >>

Car cam 21.03.2002

DriveCam Video Systems from San Diego (USA) has developed a miniature camera that is mounted on the rear-view mirror of a car. The device records the situation on the road and the actions of the driver. After a collision, the camera automatically continues shooting for 30 seconds. If necessary, it can be turned on again manually. Interchangeable memory cards are used as storage media, which simplifies the processing and viewing of footage. Automotive "black boxes" will avoid numerous disputes and lawsuits arising from the conflicting testimony of participants in road accidents. ... >>

Health and superstition 20.03.2002

There is a common belief among the Chinese and Japanese that the fourth day of every month is a bad day. According to the British Medical Journal, doctors decided to check whether this opinion affects people's health. After analyzing the death certificates for the years 1973-1998 of more than 200 Japanese and Chinese living in California, the researchers found that on the fourth day of each month, the death rate increased. In particular, mortality from heart disease rose by 13 percent. Now it remains to check how representatives of other nationalities endure the thirteenth number. ... >>

Adjustable adhesive 19.03.2002

The German company BASF has developed a polymer adhesive called acresin, the adhesive strength of which can be adjusted. This is done by irradiating the adhesive with ultraviolet rays. The higher the radiation dose, the less sticky acresin becomes. A strong version of it can be used in cases where the connection must be durable, and a weak one can be used, for example, on price labels, which are usually peeled off after buying a product. Acresin is environmentally friendly as it does not contain solvents. ... >>

Silicon shortage for solar energy 18.03.2002

Small-scale solar energy is successfully developing in Germany. According to the government program "One Hundred Thousand Solar Roofs", by the end of 2004, one hundred thousand solar panels with a total capacity of 300 megawatts should be installed in the country to supply energy to residential buildings. The pace of its implementation is such that the goal could be achieved a year ahead of schedule. However, a problem arises: the lack of silicon, this second most common element on Earth (ordinary sand is made of silicon oxide). It takes 11-15 kilograms of silicon to produce one kilowatt of solar energy. There are now more than two dozen solar cell factories in the country, they use ultra-pure silicon waste from the manufacture of microcircuits. Silicon of not so high purity and half as expensive could be used for solar batteries, but there is no production of it in Germany, and there is already not enough waste from the electronic industry. The German solar program needs more than 3000 tons of silicon, and the world's need for ... >>

Space Cognac 17.03.2002

At the last aerospace show in Le Bourget near Paris, the French cognac company Remy Martin presented to the public a new brandy brandy, developed specifically for space flights. Cosmic cognac differs from earthly cognac both in its taste and packaging. Since you have to drink in weightlessness through a straw, the liquid does not fall on the tip of the tongue, which is most sensitive to taste sensations, but on its back, where there are few taste buds. Accordingly, it was necessary to enhance the characteristic cognac taste by combining in one drink several dozen cognac spirits aged for at least three years. The container of the new drink is also adapted for space conditions. This is a 100 ml polymer capsule with a valve that prevents spontaneous release of liquid even in a vacuum. According to the firm, the capsule material protects the cognac from cosmic radiation. A straw is glued to the side for drinking in zero gravity, and a slip-on cap is suitable as a stack to taste it. ... >>

Cinema for smokers 16.03.2002

A US study shows that there is a link between how often children see people smoking in movies and how often they themselves smoke. 4919 schoolchildren aged 9 to 15 were surveyed. Two questions were asked: which films from the attached list have you seen and do you smoke. The list included 50 randomly selected popular American films released between 1988 and 1999, and for each, the researchers preliminarily counted the number of smoking episodes. Statistical processing unequivocally showed that those of the schoolchildren who saw the most "smoky" films turned out to be smokers almost three times more often than those who watched films with non-smoking characters. ... >>

How is chess played 15.03.2002

German scientists have found that when playing chess, especially when analyzing the situation on the board, experienced masters and ordinary amateurs use different parts of the brain. 20 people were seated at the boards. All of them had ten years of playing experience, but some had the title of master, the rest did not have any sports titles. Computers played against people. During the game, the chess player's brain was scanned every five seconds with a tomograph, which determined the volume of blood flow in different parts of the brain. It is this indicator that indicates the activity of the nervous tissue in this place. It turned out that the frontal and parietal lobes of the cerebral cortex work in the masters during the game - it is believed that the centers of long-term memory are located there. And for amateurs, it is mainly the central region of the temporal lobes of the brain that is involved, where short-term memory is concentrated. The conclusion of the researchers: when playing, the master draws on his extensive knowledge, the experience of tens of thousands of games, and the amateur generally has time to react to ... >>

City lights 12.03.2002

Chicago astronomers are protesting a plan to light up an 18-kilowatt aircraft beacon every evening on one of the city's skyscrapers. The high-efficiency lamp produces light with a power of 7 billion candles, in the middle of the beam its brightness corresponds to 52 million ordinary hundred-watt light bulbs. The cost of this lighting fixture is $88 million. The building, 172 meters high (37 floors), was completed in 1929. From 1930 to 1981, an aviation beacon was already shining on it, the beam of which described a full circle over the city. There is no need for such a landmark for aircraft in our time, and they want to revive the lighthouse only for purely decorative purposes, in order to return to the city one of its former symbols. However, according to astronomers, the light of the lighthouse will interfere with the new educational institution - an observatory open to all comers, which is currently being built near Chicago. In addition, opponents of the project indicate that a powerful beam will lead migratory birds astray and interfere with pi ... >>

Washing machine for dogs 11.03.2002

Spanish engineers Eduardo Segura and Andree Diaz created a dog washing machine in three years of intensive work. The machine, called "Lavacan" (from the Spanish words for "wash the dog"), lathers, washes and dries the animal enclosed inside in less than half an hour. Like any washing machine, it has several programs for animals of different breeds and sizes, as well as for washing with insecticidal shampoo (this procedure takes longer than a simple wash). Along with washing, hydromassage is carried out. According to the inventors, dogs tolerate washing in the car well, many even like the procedure, and one dog fell asleep peacefully during drying. The inventors believe that their machine is also suitable for washing cats, but cats do not think so. The industrial production of "Lavakan" has already been established, the car costs about 20 thousand dollars and is purchased mainly by professional breeders and dog beauty salons. ... >>

Invisible wires 10.03.2002

The American firm "Decorp" proposes to replace the traditional "round" electrical wiring in the house, invented more than a hundred years ago, with flat conductors of the type that are widely used in modern electronics. The company launched the production of flat cables for power wiring (a cable for 15-20 amperes and 110-220 volts has the thickness of a business card), as well as telephone and antenna cables (thick as newsprint). Flat wires can be laid anywhere on the wall, and then covered with paint or wallpaper. Special sockets and switches have been developed for flat wiring. ... >>

Year of the computer virus 08.03.2002

Perhaps, according to the eastern calendar, 2001 was the year of the Snake, but according to the western calendar, it can definitely be called the year of the Virus. So claims the British company MessageLabs, which filters e-mail for 700 customers in search of computer viruses. Now the firm views more than three million messages a day. By mid-December 2001, 1 viruses had been caught, that's one virus for every 628 emails checked. During the same period in 750, only 370 infected emails were found, i.e. one out of every 2000 checked, and in 184 the epidemic situation was even twice as light - one virus per 257 letters. If we talk about the frequency of detection of viruses, then in 700 one virus was caught every 1999 seconds, in 1400 - every three minutes, and in 2001 - only once an hour. November and December were the hardest months for computer scientists last year. ... >>

This sweet word is meteorite 07.03.2002

After studying the Murchison and Murray meteorites that fell several decades ago in Australia, American chemists found simple sugars and glycerin in them. Their quantities are very small, however, judging by the isotopic composition, these are not pollution that got into the meteorite material already on Earth, but substances brought from space. It is possible that the supply of organic compounds with meteorites (amino acids were found in the same two meteorites even earlier) played a role in the origin of life on Earth. ... >>

Anti-oxygen tent 05.03.2002

The English company Hypoxico produces tents, sleep in which increases the endurance of the athlete. A special filter reduces the oxygen content in the air supplied to the tent, simulating high altitude conditions - up to 2700 meters above sea level. As a result, in the blood of a person who regularly sleeps in such conditions, the concentration of hemoglobin increases, the absorption of oxygen from the air improves, which means that working capacity and endurance increase. According to a spokesman for the firm, athletic performance improved by three percent - that's a lot. Now there are disputes about whether such a tent can be considered a doping device. Defenders of the new method of training point out that it does not introduce anything extraneous into the body, but only filters out part of the air. If the anti-oxygen tent is considered doping, then widespread filters for drinking water will fall into the same category. ... >>

Ancient mines and modern ecology 04.03.2002

Ecologists say that the inhabitants of the Earth are still being adversely affected by toxic substances that were produced in ancient mines and smelters two thousand years ago. Even now, wind-blown microparticles of heavy metals retain high concentrations and are absorbed by plants, animals and people inhabiting the areas of ancient mine workings, says Brian Pyatt from the University of Nottingham, England. Having studied the processes of environmental pollution in the Wadi Fainan area in southern Jordan, measuring the current concentrations of copper and lead in this arid region, where the Babylonians, Assyrians, Romans and Byzantines were mining thousands of years ago, the scientist found that these concentrations are exceptionally high today, despite the long-term effect of water and wind erosion, and pose a great threat to the health of the Bedouins, causing nausea, diarrhea, convulsions, and even causing death. Due to the ancient mining industry with ... >>

Computer mouse can type 02.03.2002

The Japanese company Casio has released a computer mouse with a built-in label printer. Having selected some phrase in the document called up on the monitor screen, it can be immediately printed on 13 mm paper tape with an adhesive layer, the roll of which is inside the mouse. The new mouse prints in any font of any language installed on the computer. You can print, for example, labels for diskettes and cassettes, labels for folders with papers. In addition, the mouse program has a stock of ready-made common words and phrases such as "Do not turn off!", "Incoming", "Outgoing", "Confidential" and so on. It is convenient to use such a printer to print frequently required addresses and phone numbers, which can be directly pasted on a computer or monitor so that they are always in front of your eyes. Otherwise - the mouse is like a mouse: a tail, two buttons, a wheel and all the usual functions. ... >>

Robot with a human face 01.03.2002

Engineers at Carnegie Mellon University (USA) have created a robot named Wikia with a female face. This face is displayed on a flat screen mounted on the robot's torso, resembling a bedside table on wheels. When the robot speaks, its lips move according to the spoken sounds, and the facial expression also changes. The screen with the image of the face turns to the interlocutor. It is assumed that such robots could serve as guides in museums. The laser radar will allow Wikia to notice when visitors approach her and start her story. Meanwhile, a robot with the ability to mimic was also created at the University of the German city of Paderborn, but its face is not drawn on the screen, but mounted from plastic and metal parts that change position with the help of small servomotors. A robot named Mexi is able to portray friendliness, displeasure, anger, sadness. ... >>

Steam diesel engine 28.02.2002

The Czech company Skoda spent 6 years and $60 million developing a new engine, which is a steam engine that runs on diesel fuel. The working volume of the engine is 1 l. Diesel fuel is used to heat water vapor up to 900°C, and already the steam sets the pistons in motion. A small rotary version of this motor has been developed so far, and a full-size one will be ready, as Skoda engineers promise, in 8 years. ... >>

Superfast cargo delivery 27.02.2002

A group of scientists from Bochum (Germany) has created a capsule that is designed to transport goods underground. It is a sealed structure 1,6 m high, which at a speed of 3540 km / h will transport a variety of goods along metro lines and highways. The track along which the capsule will move, controlled not by a driver, but by a computer, will connect, for example, an airport with a factory, a factory with a warehouse, a warehouse with a port. The project is called Cargo Sar and is pretty far advanced. To date, there is already a model of the capsule, which is now being modernized: the design is being finalized, the optimal speed is being calculated, the degree of metal wear, the permissible track angle, etc. . ... >>

Cars go on rails 26.02.2002

The Danish company RUF International presented to the government a project designed to solve the problem of congestion in the transport networks of large cities. The essence of the project is to direct all urban transport, including cars, on rails. The proposed transport system is a network of monorail roads along which public and private electric vehicles move. Small sections of the way transport overcomes on ordinary roads. Then he enters the rails and combines into a kind of train moving at speeds up to 120 km / h. It is also planned to automate sections of roads without rails: sensors installed underground form a kind of fairway, so that drivers may not drive their cars at all. Cars for the RUF transport system can be anything, but for driving on rails they must have a V-shaped channel running along the bottom of the body. The monorail system is intended for large cities, but the authors of the project did not forget about the residents ... >>

Flying car 25.02.2002

Dutch inventor John Becker of Delft University of Technology has developed a gyrocopter or "flying car" - a miniature aircraft powered by a diesel engine. To take off, the car only needs a fifty-meter run. Rising into the air, the "flying car" moves at speeds up to 250 km / h, and lands vertically. The advantage of a mini-helicopter is its ease of control: for its "driving" practically no special training is required. Tests of the first gyrocopters were successful. The Dutch government is considering supplying almost every law enforcement and rescue worker with gyrocopters. ... >>

Clock with a dosimeter 24.02.2002

The Belarusian company "Polimaster" has developed a watch with a built-in miniature dosimeter that constantly measures the intensity of the radiation background and displays the radiation level on the LCD screen. If the level exceeds the allowable level, the device beeps alarms. The function of counting time is entrusted to the quartz movement of the Swiss company Ronda. The backlight of the dial allows you to control the readings of the watch in the dark. The modern steel case provides water resistance to a depth of 100 m. The cost of this useful device is $200. ... >>

Voice controls home appliances 23.02.2002

Toshiba has developed a headset that allows you to control home and audio equipment with voice commands. The novelty allows you to establish a wireless connection with devices equipped with a Bluetooth port. By wearing a headset, you can listen to music from the Internet and record your voice from the microphone to the hard disk within 10 m from the computer. The head phone is powered by a lithium-ion battery, which ensures the operation of the device for 5 hours. The cost of a new device will not exceed $80. ... >>

head computer 22.02.2002

In March 2002, for the first time, a head-worn computer will enter the market. Its authors from Xybernaut called their development Rota. You can check email, listen to MP3 music and play PC games on the go with the head computer. Xybernaut President Edward Newman says Rota will be able to replace his owner with a mobile phone, pager, music player and electronic address book. It is equipped with two expansion ports to which you can connect a wireless modem, external hard drive or folding keyboard. Roth's developers tried to place its display as close to the user's eye as possible. As a result, the XNUMXcm monitor can see as much detail as a standard desktop display. The Roth display is transparent, which allows you to simply look at what is happening on the monitor or the events of the real world. ... >>

Robot phone 20.02.2002

The American company Polyconcept has developed a robot phone that can talk, move and perform many other functions. The built-in speech recognition and generation system allows the phone to recognize the owner's commands and respond to him. Using infrared sensors, the phone detects moving objects and begins to "chat" with the owner if he enters the room. Having determined the number of the incoming call, it reports the name of the caller. The phone can also store significant dates and remind you of them at the right time. Mass sales of the new phone in the United States should begin in June 2002. Japan's KDDI Corporation, together with Sanyo Electric, has developed a video-recording cell phone equipped with a built-in miniature digital camera with the largest 2,2-inch EL display. The MPEG-4 codec compresses 15 fps video footage into files small enough to send by email. Sale of new cellular terminals ... >>

Scanner-keychain of Internet sites addresses 19.02.2002

Every self-respecting company now announces in advertising or even directly on its products the address of its own page on the Internet. You have probably seen these addresses, which usually begin with the Latin letters www. But not every Internet connoisseur who has read the advertisement looks at the proposed address - it is too troublesome to type a combination of letters in the computer window. The American company "Air-Click" offers a miniature device for reading and storing Internet addresses, made in the form of a key fob. True, the address can only be read if it is printed as a bar code. The pocket scanner can remember up to one hundred addresses. It is connected to a computer - and go directly to the desired page. ... >>

All dumps of Seville 18.02.2002

The Spanish city of Seville (700 thousand inhabitants) produces 900 tons of garbage per day. Recently, each garbage container has been equipped with a system developed by Siemens that determines the degree of filling of the container, and each garbage truck has a satellite navigation system that fixes the location of the vehicle. Both these data are sent by radio to the dispatch center, where empty and full containers are marked with icons on the electronic map of the city, and the dispatcher directs the nearest car to them. ... >>

The threat to the ancient city of the Incas 17.02.2002

After the recent earthquake of 7,9 in Peru, it became clear that the country is threatened by a new terrible danger. According to scientists, the ancient city of the Incas, Machu Picchu, masterfully erected by the Indians on a huge mountain cornice, can fall into the abyss at any moment. Leading Peruvian archaeologist, Dr. Frederico Kaufmann, accuses the authorities of the country of completely disregarding the results of research by Japanese scientists, which prove that urgent measures are needed to save the ancient Inca city. It has been found that the mountainside on which the city rests can be subjected to a landslide and collapse down in a few years. Movements of the earth's crust were noticed under the city. The pace of the incipient landslide is accelerating very quickly, and scientists estimate the possible duration of the city's existence at the most at 15 years. The Incas were great builders, they adjusted huge blocks of stone one to another so that it was impossible to squeeze a razor blade between them. But now there are cracks in the walls, and you ... >>

The blackest body in the solar system 15.02.2002

After processing the results of the September flyby of the Deep Space-1 automatic probe past the comet Borreali, astronomers came to the conclusion that its eight-kilometer core is the blackest body in the solar system. In general, as the study of other comets showed, the nuclei of these celestial bodies are distinguished by a dark color, but Borrelli's comet surpassed all. The substance of its core reflects only about three percent of the light falling on it, which is comparable to the black toner powder used in copiers and laser printers. For example, freshly laid asphalt reflects 7% of light. But there are even blacker patches on the comet's nucleus, reflecting just 0,7% of sunlight. It is assumed that these are some kind of high-molecular carbon compounds that are unable to evaporate under the heating of sunlight. The question may arise: why are comets clearly visible in the sky if they are so black? It is the easily evaporating substances of a comet that form its tail and glow in the rays of the Sun. ... >>

Robot neurosurgeon 14.02.2002

The British company "Armstrong Healthcare" reported that she managed to develop the world's first robot for surgical operations. Now you can not be afraid that the surgeon's hand will suddenly tremble during an operation on the human brain. The robot is able to bring surgical instruments to the operated area of ​​the brain with the highest degree of accuracy, without causing any damage to the surrounding healthy tissues. The neurosurgeon robot can be used to remove brain tumors, treat Parkinson's disease, epilepsy, and even transplant brain cells using the latest techniques. It is the first robot capable of reading a map of a human skull. Its task is to provide the neurosurgeon with absolute precision in the application of the instrument. It is completely safe and easy to operate; to launch it, it is enough to set a target for the robot and indicate the approach paths on the scanned x-ray image of the patient's brain. The robot has a video camera that accurately aligns the scanned image with the desired area on the patient's head. ... >>

The largest asteroid 13.02.2002

The first asteroid, discovered 200 years ago and named Ceres, is still considered the largest - its diameter is about 1000 kilometers. However, recently a group of German, Finnish and Swedish astronomers, after analyzing numerous images of the starry sky, found an even larger asteroid. Its size is estimated at 1200-1400 kilometers. The asteroid, which received the temporary number 2001KX76 (in the future, it will be given, as it should be, a name from mythology), is located a little further than Pluto. ... >>

Condors are about to fly 12.02.2002

Argentinean and Chilean scientists are preparing to release eight Andean condor chicks raised in special nurseries. In this way, they hope to save the legendary bird from extinction. The condor is the heaviest bird in the world that can fly, with a wingspan of almost four meters. The condor feeds on carrion and is extremely useful as a nature orderly. Zoologists hope that sooner or later their pets will be reunited with their brethren. The condor is considered the national symbol of Chile. It is capable of reaching a height of five kilometers in flight and overcoming more than 300 kilometers per day. The only natural enemy of the condor is man, and this has led to the almost complete extermination of the bird. Farmers mistakenly believe that the condor feeds on their living creatures, and ruthlessly exterminate it. In Venezuela, the condor is completely exterminated, in Colombia and Ecuador there are no more than a hundred individuals left, in Peru and Bolivia there are only a few more of them, and even in Argentina and Chile, where this bird is taken care of until ... >>

Football player in control 09.02.2002

Several European universities, led by scientists from the National Technical University of Greece in Athens, are developing a system that will allow you to monitor the actions of a football player on the field during the game. A special jacket stuffed with electronics broadcasts data on the speed and acceleration, pulse, temperature and respiratory rate of its wearer. In the future, a system will also be introduced into the jacket to determine the exact position of the player on the field. Then the reasons for many football conflicts and disputes will disappear, and the coach will be able to arrange a detailed "debriefing" after the game. Three years and 200 thousand pounds sterling were allotted for the development of such a system. Before washing, the electronics will have to be removed from this piece of sportswear, but the wires will remain in place - they endure washing. ... >>

The conductor will notice falsehood 07.02.2002

How does the conductor of a large symphony orchestra of a good hundred musicians manage to hear, among the roar of drums and timpani, which of the ten violins is slightly out of tune? It turns out that the conductor's brain is specially adapted for this difficult task. A professional conductor is able to spatially localize sound in his surroundings better than any pianist or non-musician. German researchers from Magdeburg and Hannover offered seven classical music conductors, seven pianists and seven ordinary citizens a special acoustic test. They placed three speakers in front of the subjects and three around them. Randomly, the speakers played a series of standard tones, but sometimes the scientists added frequency-shifting noise to the sounds. Listeners were asked to press a button if a false note came from one of the speakers. Measurements of brain activity and the number of errors showed that all three groups were equally good at distinguishing falseness from the center speaker, but only the conductors could ... >>

Surgeon's black box 06.02.2002

Specialists at Imperial College London are developing a system for recording everything that happens in the surgical operating room. Just as information from the aviation "black box" helps to investigate the causes of accidents, in surgery it will allow us to study in detail each operation, including the reasons for its failure. Electromagnetic or ultrasonic sensors mounted on the hands of the surgeon will record all his movements. There should also be a record of conversations in the operating room, all vital signs of the patient, and even a record of who and when entered the room during the operation and left it. The development leader, Ara Darzi, professor of surgery at the Imperial College, says the system will be cheaper than many modern hospital equipment. A spokesman for the British Medical Association expressed concern that the consciousness of constant surveillance would unnerve people engaged in vital work. But the same fears were expressed before the introduction of "black ... >>

Camcorder for short people 05.02.2002

Filming some event on a video camera that attracted a large crowd, it is impossible for a short person to aim the lens and select a frame: the heads of those standing in front interfere. To fix this, the American company RCA released the CC9390 digital video camera with a detachable viewfinder screen. You can raise the camera higher and keep the screen in front of you. ... >>

Video recorder filters ads 03.02.2002

The American company "Go-Video" has begun production of video recorders that eliminate advertising from recordings made from the air. The DDV2110 VCR has two cassette slots. At the hour set on the timer, he records the program you are interested in on the first cassette. After the end of the recording, he rewinds the tape to the beginning and begins to scan it in search of commercials. Their signs are the dimming of the screen for a fraction of a second when switching to advertising and back, as well as the disappearance of the channel symbol in the corner of the frame. In addition, the smart device focuses on the characteristic duration of advertising blocks - 15, 30 and 60 seconds. The first minute and the last two minutes of the program are not checked for advertisements: it is not customary to insert advertisements in them on American television. Scanning an hourly recording takes about 15 minutes. After that, the VCR rewrites the transmission from the first cassette to the second, skipping all the commercials. As a rule, the device’s guesses about what exactly needs to be cut out are ok. ... >>

Power plant in a button 01.02.2002

Engineers at Columbia University (USA) have created a prototype gas turbine power generator that can replace batteries in portable electronics. The miniature, button-sized power plant is made in a block of crystalline silicon using the same methods used to make microchips. The fuel is hydrogen. Hot steam, the product of its combustion, rotates a turbine with a diameter of four millimeters, developing two million revolutions per minute, and an electric generator is connected to the turbine. The power of the unit is 20 watts, it is quite enough to power a laptop computer, a cell phone or just a flashlight. True, not every owner will like the fact that his device throws out a trickle of hot steam. Therefore, most likely, a miniature power plant will be mounted in a separate case the size of a deck of cards, and the current from there will be used to charge conventional batteries of a computer, telephone, or flashlight. According to the creators, the commercial version will be ready by the end of now. ... >>

The car adapts to the driving style of its owner 31.01.2002

At the Tokyo Motor Show in October 2001, a new concept car was presented to the general public that can adapt to the driving style of its owner and help him drive. The novelty, created by specialists from Toyota Motor and Sony, has biometric sensors mounted in the steering column that measure the heart rate and conductivity of the driver's skin. If the driver is too excited or feels unwell, which immediately affects his functional state, fixed by sensors, the on-board computer gives an alarm to the driver and turns on emergency lights, warning other drivers and pedestrians of the danger. Similarly, the car behaves in case of speeding and dangerously close to obstacles. ... >>

Silent Submarine 29.01.2002

Until now, all submarines were propelled by propellers. But perhaps things will change soon. American scientists from the University of Texas are developing a submarine that will swim like a fish thanks to the flapping movements of its hull. A working prototype of this type of submarine, 1 m long, has already been created. The new drive allows the submarine to move almost silently, since it leaves behind very weak eddies, rather than a powerful turbulent jet. The back of the boat's hull consists of six movable elements made of an alloy of nickel and titanium. This alloy has a so-called memory effect, due to which the body elements change their shape depending on the temperature. ... >>

Network for ultra-fast internet 28.01.2002

In Cardiff (Great Britain), tests of a new telecommunications network are being completed, which its creators, specialists from Radiant Networks, have given the name Mesh Radio. The new network will provide its users with ultra-fast Internet access at speeds up to 4 Mbps, make it possible to watch video on demand, conduct video conferences and receive other services. At the same time, unlike other similar systems, almost 100% coverage of the territory is provided. The construction of the new network is based on the principle of placing mini-base stations on all buildings of the settlement, which almost completely eliminates the possibility of the formation of zones not covered by the new service. Each base station communicates directly via a radio channel operating in the 28 or 40 GHz bands with several of its neighbors. The operation of the entire city network is controlled by the Control Center, which has access to video and Internet resources. ... >>

Smart home appliances with Internet access 27.01.2002

Toshiba Corporation begins the development of a series of "smart" home appliances connected to the Internet. The first such device will be a refrigerator that allows the owner to check its contents outside their own home over the network. The principle of operation of the Internet refrigerator is based on the mandatory registration of everything that is placed in it. The refrigerator is equipped with a small camera that will allow the owner to see firsthand the contents of the freezers when remotely connected to it via the Internet. Going forward, Toshiba plans to bring this technology to other home appliances, including microwave ovens and air conditioners. A "networked" microwave will be able to download cooking recipes from the Internet, and Toshiba's new air conditioner can be turned on and off from any room in the house via wireless communication, and controlled over the Internet from anywhere else. ... >>

Silent boots over shoes 26.01.2002

In the USA, special boots were invented that are worn over ordinary shoes. Walking in them remains almost silent. The novelty is based on the use of oiled leather (spandex), covered with elastic fabric. In addition, to achieve the effect of maximum noiselessness, the creators provided their development with special shock-absorbing cords and foam inserts designed to "absorb" sounds. It is assumed that the main customers of the new boots will be the US Armed Forces, as well as the FBI special forces, the success of whose operations largely depends on the equipment, equipment and uniforms used. It is also possible that the development will be used by the American infantry in Afghanistan in the near future. ... >>

The microcircuit is cooled by a fan 25.01.2002

American scientists from the University of Indiana have developed a new type of device for cooling chips, working on the principle of a fan. Dozens of small plates are connected to piezoelectric elements, which, when an alternating voltage is applied to them, cause the plates to vibrate. Such devices, although they lose performance to conventional fans, consume ten times less energy. They can be placed in places inaccessible for the installation of fans. In addition, unlike traditional fans, whose size reduction makes them inefficient due to friction losses, the new devices have a significant reserve for further miniaturization. In the future, scientists hope to reduce their size to 0,1 mm, which will make it possible to install such "fans" inside microcircuits. ... >>

TV recognizes voice 24.01.2002

The Japanese company Panasonic announced the release of a high-definition TV with voice recognition functions - TH-36DH200. The new 36-inch TV has a built-in microphone, allowing the user to change channels, record and play video clips with the built-in DVR, find program information and more by commanding the TV with their voice. The DVR has a built-in 80 GB hard drive that allows you to record up to 7 hours of high-definition video clips or up to 70 hours of conventional analog video. ... >>

Touchpad Airboard 20.01.2002

Sony has introduced a new Airboard touchpad model. The novelty, codenamed IDT-LF2, consists of two modules interconnected by a wireless data network. The first module is a 12,1-inch liquid crystal display with a maximum resolution of 800x600 pixels. The display is equipped with a slot for memory cards and a PS / 2 socket for connecting a stationary keyboard, and a lithium-ion battery provides autonomous operation of the device for 2 hours. 802.11 kbps modem with digital modem connector (ADSL), USB port, video inputs and video outputs. The Airboard owner can not only watch TV while moving around the house (the display works within a radius of 56 m from the base station), but also surf the Internet thanks to the touch panel. ... >>

Miniature internal combustion engine 18.01.2002

A group of engineers from the Massachusetts Institute of Technology (USA), together with specialists from other universities and companies, is developing a miniature internal combustion engine that can replace batteries and accumulators in the future. The dime-sized engine operates on the principle of a gas turbine driven by a stream of hot gases. It is capable of generating 20 W of power at a rotor speed of 2,4 million rpm. All the tiny components are made in the same way as computer components, and their production will not require large expenses. When developing the engine, the creators had to overcome numerous technical difficulties associated with the need to ensure acceptable (micron) surface accuracy, as well as the problem of removing a large amount of heat generated by the engine. The developers are confident that a workable miniature engine will be assembled in two years, but commercial models will not appear until 2010. ... >>

Obesity is contagious 15.01.2002

Indian researcher Nikhil Dhurandhar, working in the United States, discovered in humans an adenovirus called AD-36, which, according to the scientist, causes obesity. In any case, the injection of this virus through a syringe into chickens, monkeys or rats causes the accumulation of excess fat in animals. Moreover, blood tests of 300 obese patients revealed antibodies to this virus in a third of them, which indicates that their immune system is familiar with it. And it turned out that chickens infected with the AD-36 virus by injection in less than a day infect their fellows kept in the same chicken coop with it. ... >>

What is healthy for a cat is death for a mosquito 14.01.2002

The common plant catnip (catnip), which attracts cats even more strongly than valerian, turns out to have the opposite effect on mosquitoes. A few years ago, American entomologists Joel Kote and Chris Peterson showed that cockroaches do not like the smell of catnip. Now they decided to investigate the attitude of mosquitoes to this plant. A group of 20 mosquitoes was placed in a long glass tube, half of which was treated with a 10% solution of nepetapactone, the main ingredient in catnip essential oil. After 20 minutes, it turned out that only four mosquitoes remained in the smeared half of the tube with the solution, the rest flew into the clean half. When the solution was diluted ten times, five mosquitoes could endure its smell, that is, its activity decreased slightly. For comparison, we conducted the same experiment with the best modern synthetic repellent - DEET (dietiptoluamtz). Eight or nine of the XNUMX experimental bloodsuckers remained in the half of the pipe he smeared. If ... >>

Digital stereoscopic camera 12.01.2002

The world's first stereoscopic video camera was released by the Japanese company Canon. Two lenses work simultaneously, the electronic shutter transmits the image to the photosensitive matrix alternately from one or the other lens, switching 60 times per second. In order to see a three-dimensional image on the TV screen, special glasses are used, which, at the same frequency and synchronously with the shutter of the camera that was filming, cover either the left or the right eye of the viewer with a liquid crystal shutter. The price of a new video camera is $4500. ... >>

soy car 11.01.2002

American scientists propose to replace some of the metal parts of an automobile engine with parts made from soy. In the United States, an excess of soybean oil of about six million tons is formed annually, and this excess must be put somewhere. The new material consists of 80% soybean oil, the rest is epoxy, silicon, carbon fiber, glass fiber and hardener. Parts made from soy have the same strength as aluminum, but are half the weight and 30% cheaper. The new material is especially suitable for the manufacture of small parts of complex shape that are not subjected to strong heat. True, the manufacturing process is still very long: it takes 3-4 hours to create a small bolt. ... >>

Home doctor in the closet 09.01.2002

Many sci-fi novels feature a "cyberdoctor" - a robot with artificial intelligence, able to examine the patient and prescribe the necessary medicines. The first step towards the creation of such a device was made by the American firm Accenture from Illinois. The first-aid kit cabinet, developed by the company, contains a built-in computer with a video camera that allows it to recognize the face of the person approaching the first-aid kit. The screen on the locker reminds the approacher which medicines and when he should take. Among other things, there is a tonometer in the first-aid kit, so that after measuring the pressure, the computer can advise you to take the appropriate medicine. The next model will be able to give more detailed advice. ... >>

During the holidays, students get stupid 07.01.2002

This conclusion was reached by the German psychologist Siegfried Lerl from the University of Erlangen, who is also the chairman of the German Society for the Development of Mental Abilities. After conducting multiple psychological tests, Lerl found that three weeks of vacation lead to a decrease in intelligence quotient by 20 units. A prolonged decrease in mental activity causes "drying" of nerve cells in the frontal lobes of the brain, explains the psychologist. You can counteract this process by setting aside half an hour on each vacation day for puzzles or chess. The psychologist simply did not dare to recommend solving one or two problems from a school textbook a day. ... >>

Laboratory in a vest pocket 06.01.2002

The English branch of the German company Siemens has developed a miniature environmental laboratory for determining the quality of water in a water supply system or in natural reservoirs. Sensors placed on the chip determine the acidity index, oxygen concentration in water, its conductivity, redox potential, free chlorine content and water temperature. The analyzes do not require any reagents, the service life of the sensors is about six months. ... >>

Stone-eater ordinary 05.01.2002

American oceanologists have found in samples of volcanic rocks raised from the bottom of the Atlantic and Pacific oceans, microbes that eat obsidian - volcanic glass, hardened lava. In columns of obsidian mined by drilling, both the microbes themselves are visible - filamentous formations on the surface of obsidian, and worm-like passages about 25 micrometers thick left by them in the thickness of volcanic glass. Microbes are also found at depths of up to 400 meters under the seabed. ... >>

Swimming pools can be dangerous 03.01.2002

A group of doctors from the Catholic University of Leuven (Belgium) claims that visiting the swimming pool leads to allergies and asthma in children. 226 children aged 8 to 12 were examined. Some of them have never been in swimming pools, others have been in the pool three times a week since the age of three or four. Analyzes have shown that in children who have been swimming in the pool for a long time, proteins appear in the blood that are characteristic of adult smokers and indicate damage to lung tissue. Other researchers have found an increased prevalence of asthma in swimming pool attendants. Both phenomena are apparently explained by the presence of chlorine in the water. Doctors believe that the chlorine added to the water for disinfection should be replaced by ozone or bromine. ... >>

Which language is the easiest 02.01.2002

Despite its prevalence in the world as a language of international communication and the idea that it is the easiest to learn, English is the most difficult of the European languages. In any case, it is the most difficult to learn to read on it. Children of other nations learn the basics of literacy in an average year, and little Englishmen need two and a half years for this. This conclusion was reached after an extensive study by the English philologist Philip Seymour, who compared teaching children to read in 15 European countries. It turned out that children from countries with Romance languages ​​(France, Italy) achieve rapid progress, while it is more difficult to learn to read in the languages ​​of the Germanic group (German, English). English literacy is especially difficult to master. And in English-speaking countries, there are more children suffering from dyslexia - difficulty in understanding written text. The complexity of English lies in the fact that the same letters are pronounced differently in different cases, in different words. The most easy ... >>

electric dragonfly 01.01.2002

Graduate students from the University of California (USA) have created a miniature ornithopter. The wings are made of polyethylene film, the skeleton of the "dragonfly" is made of titanium and carbon fiber. Similar structures with flapping wings have been known for almost a hundred years, but the power source in them has still been a rubber clockwork engine. The American ornithopter is powered by a battery, which so far lasts for 21 seconds of flight. The students intend to improve their apparatus by installing a more powerful battery and lightening the design. ... >>

Anti-mosquito composition for clothing 30.12.2001

President of the Australian company Healthguard Corporation K. Harvey has developed an anti-mosquito composition for impregnating clothes that is safe for health, but reliably protects against mosquitoes. Anti-mosquito impregnation can withstand fifty washings and at the same time retains all its qualities. When testing this product, it turned out that the midge dies even when approaching a person, without even touching his clothes. ... >>

Parking will be easier 29.12.2001

In the UK, equipment is being developed that will help drivers park on a crowded street. The electronic system uses a compact radar and several miniature video cameras connected to an on-board computer. Devices measure the length of the free area near the sidewalk, and the computer "tells" the driver how best to park the car. If there is a danger of hitting another vehicle or a pedestrian, the electronics immediately stop the vehicle. ... >>

Billiard cue with laser sight 25.12.2001

At a high-tech exhibition in Milan, a billiard cue equipped with a laser sight, similar to those mounted on small arms, was presented. According to Italian engineers, this innovation will significantly improve the accuracy of impact. ... >>

Touch keyboard with Bluetooth 23.12.2001

Senseboard has developed a device that combines sensor technology with an artificial neural network that can accurately track the movements of the fingers of a typing person. Representatives of the Swedish company believe that the keyboard simulator they have created will solve the problems of mobile computer users who no longer have to poke on tiny buttons. The device captures finger movements when pressed, and precise measurements allow you to determine which keys a person wanted to press when typing. Sensors made of rubber and plastic are connected to the user's palms so as not to interfere with the movements of the fingers. Using Bluetooth technology, information about the "printed" is transmitted wirelessly to a computer, where a text editor analyzes the signals and turns them into text. In addition to the error correction system, the device has a "pause" function, which allows a person to eat, drink and perform any other work with his hands without removing the sensors. Representatives of Senseboard ... >>

Wrist camcorder 22.12.2001

At Comdex Foil 2001, Sony presented a sample of a camcorder in the form of a wristwatch. The new watch has a color screen, built-in camera, microphone and Bluetooth-module, and can transfer the image to a PC and other watches in real time. At the moment, the company is testing new watches to decide on their mass production. ... >>

mobile camera 20.12.2001

A third-generation mobile phone that allows you to take electronic photographs with a three-fold zoom is offered by Minolta, a leading optical manufacturer in Japan. The company has developed a miniature lens with a diameter of 14 mm and a thickness of 9 mm, which practically does not increase the size of the tube. The lens is also unique in that it extends using a tiny ceramic rod that expands under the influence of an electrical voltage. All this takes no more than 0,5 s. ... >>

Electronic jersey for a football player 19.12.2001

Researchers from the University of Birmingham in the UK presented their development - a jersey for football players, in which a wearable computer is sewn in, which can record a number of medical indicators (pressure, pulse, temperature, etc.). However, the creators of the miracle T-shirt consider the system for determining the location of players developed by them to be the most important achievement. By analyzing the data obtained in this way, coaches will be able to draw conclusions not only about the health of the player, but also about his performance on the field. Now work is underway to reduce the size and weight of the T-shirt. However, most of all, scientists are puzzling over how to protect the computer during washing, because it is assumed that the T-shirt will be used more than once. ... >>

Battery scooter 15.12.2001

American inventor Dean Kamen demonstrated to the public his invention, known as Ginger. The device is a two-wheeled scooter powered by a battery. According to the descriptions of people who have ventured to try a new vehicle, it is unusually stable, maneuverable and even provides the ability to go up and down stairs. With minimal electricity consumption, a person of average build can drive it all day at a speed not exceeding 30 km / h, which is quite enough for modern cities clogged with transport. In order to make the scooter move in a certain direction, the rider only has to lean slightly in that direction. ... >>

Security on the Internet 12.12.2001

A small electronic company "Scholey" in Wales (Great Britain) has developed a system of television surveillance via the Internet. It is five times cheaper than conventional surveillance systems, in which cameras placed on the streets or inside guarded buildings are connected by cable to monitors in the security room. Cheapness is explained by the fact that there is no need to lay cables (you can view the image via the Internet by phone) and pay for three shifts of on-duty observers (the camera has a memory). Actually, there are few places in the world that it is desirable to watch inseparably every minute 24 hours a day. You can simply view the frames stored in the camera from time to time. The Sholi TV camera is connected to the Internet and is equipped with a hard disk for recording images. In the more expensive model, the recording is on DVD, with one disc containing footage from a network of eight cameras in a month of operation. The picture received in real time or recorded can be viewed via the Internet. Role distance ... >>