Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


To help the erudite. Database on the history, geography, biology, science, technology, sport, culture, traditions of the peoples of the world. According to the materials of the press and the Internet.

Random interesting fact

Comments on the article Comments on the article

<< Back     Forward >>

Another piece of evidence of global warming: Based on maps and satellite imagery, between 1995 and 2000 Patagonia's glaciers lost 43 cubic kilometers of ice every year due to melting. Between 1968 and 1995, this loss was only 16 cubic kilometers per year.

Tsiolkovsky also suggested placing astronauts during the launch of the rocket in water tanks to mitigate the effect of overload. One of the Swiss firms has begun production of an anti-g suit for pilots and astronauts, in which 1,3 liters of a special liquid are placed between two layers of the shell. The suit prevents the outflow of blood to the legs during hard acceleration.

Pearls, it turns out, are grown not only in Japan. France produces annually 6 tons of cultured pearls worth 900 million francs. There are pearl oyster breeding stations on 34 islands in French Polynesia and employ 5000 people.

War casualties now account for less than one percent of the world's total deaths. War as a cause of death is far ahead of car accidents, suicides and fires.

The inhabitants of the Pacific archipelago of Tuvalu, which is gradually sinking into the water due to the rise in the water level in the ocean, decided not to wait until their islands completely sink, and to start resettlement ahead of time. There are only 11 of them. New Zealand agrees to accept everyone, but gradually, in batches of 500 people a year for 350-30 years. Oceanographers believe that the islands will completely disappear as a result of global warming in 40 years.

In 1996, Greenland lost 91 cubic kilometers of ice, in 2000 - 138, and in 2005 - 224 cubic kilometers.

In 1999, about $800 million worth of polycrystalline silicon ingots were produced in the world. The “wafers” made from them - thin round plates with dozens of microcircuits on each - are already worth 6 billion dollars. Finished chips (microprocessors, memory chips, controllers, and others) cut from “wafers” and inserted into cases with contacts cost about $150 billion, and the final product - computers where these chips are placed - is about $750 billion. That is, one dollar invested in the production of silicon for electronics eventually “rises in price” by almost 1000 times.

During 1999, the total capacity of wind power generators in Western Europe increased by 30 percent and reached 8900 megawatts.

In 2000, 79 unprovoked shark attacks on humans were recorded in the world, which is 21 cases more than in 1999.

In 2002, 12,4 billion digital photographs were taken worldwide, but only one in four was printed on paper. The rest are stored on hard drives of computers, in the memory of the cameras themselves, or recorded on CDs and are viewed only on monitor screens.

In 2003, over half a billion mobile phones were sold worldwide.

In 2003, 32 people died due to earthquakes in the world (in 819 - 2002 people).

In 2004, the ozone hole over Antarctica shrank by 20%. In 2003, it covered 28 million square kilometers, almost three times the size of Europe.

In 2004, compared with 2003, French scientists published fewer articles in American scientific journals and more in English.

In 2005, thanks to the use of renewable energy sources in Germany (water, wind, solar, geothermal energy), carbon dioxide emissions were reduced by 80 million tons. As you know, global warming is associated with this gas.

In 2005, the world's passenger aviation transported 1,9 billion people.

In 2007, the Antarctic ozone hole shrank by 30% compared to 2006.

During the 90s, the weight of the average American increased by 5 kg. Because of this, US airlines now spend $175 million more fuel for airliners a year than they did in the 80s.

Over the next five years, 512 million end-of-life personal computers will be written off in the world. Only 27% of them will be dismantled and then used for secondary raw materials or for parts for new computers.

During the international program to search for radio signals of extraterrestrial civilizations, more than 85 million records of suspicious signals have been accumulated. Now they need mathematical analysis in order to identify among them really artificial ones that carry some meaning. The analysis would require 100 years of powerful computing, so it would be done on multiple machines connected to the Internet at once.

Every year, biologists discover about 15 new species of living creatures - mostly small, living in secret or where a person does not look, for example, in the deepest depressions of the ocean floor or in the thickets of a tropical forest.

During the year, biologists discover about 16 thousand new species of animals, mostly insects. According to some estimates, it will be possible to complete the inventory of the animal kingdom at such a pace only in a thousand years.

During the year, biologists discover about 16 thousand new species of animals, mostly insects. According to some estimates, it will be possible to complete the inventory of the animal kingdom at such a pace only in a thousand years.

During the year, botanists discover about 2000 new plant species.

During the year, more than four million suitcases and bags are checked for explosives and weapons at 429 US civilian airports. Inspection of the baggage of one passenger costs the airport 5-7 dollars.

During the year, 50 new varieties of roses appear in the world.

During the first half of 2003, 25 million mobile phones with a digital camera were sold worldwide. This is 5 million more than for the same period sold independent digital cameras.

For six months of feeding a baby, the mammary glands of the mother secrete almost 6 kilograms of fat.

Over the past 10 years, the number of US residents who are not adherents of any religion has doubled from 7 to 14%.

Over the past 25 years, the number of foreign students in German universities has quadrupled. They mainly come from European countries (56%), with Poles and Turks predominating. From Asia came to study 23%, from Africa - 13%.

Over the past 30 years, the frequency of sentencing to imprisonment has quadrupled in the United States. Out of every 700 people, 5 are in prison. Approximately the same proportion in Russia and 20 times greater than in the most severe European countries in this respect - in England. Of every XNUMX adult American men, one has been incarcerated in a lifetime (and among blacks, one in five).

Over the past 30 years, the number of cases of cirrhosis of the liver has increased by 700% among the British, and by 800% among English women.

Over the past 40 years, wine consumption in France has fallen from 100 to 55 liters per adult per year.

Over the past 40 years, the cost of manufacturing a single transistor has dropped a billion times.

Over the past 40 years, the thickness of the pack ice in the Arctic has decreased by an average of 130 centimeters.

Over the past 50 years, global paper consumption has increased 5 times and is expected to double in the next 50 years.

Noise levels in the oceans have risen by about 50 decibels over the past 10 years, largely due to underwater explosions used in seismic oil exploration.

Over the past 60 years, the cost of computer time has fallen by an average of 42 percent annually.

Over the past eight years, the nicotine content of 92 of the 116 brands of cigarettes produced in the United States has increased by at least 10%, and in some brands - by 30%.

Over the past half century, about 800 dams have been built on the world's rivers, of which 45 are above 15 meters.

Over the past century, the brightness of the Sun has increased by one percent.

Over the past year, more than 100 million bicycles were produced in the world, which is about 2,5 times more than the world's car production at the same time. The main buyer is China, in second place are the countries of the European Union.

During its lifetime, the average solar battery produces 9-17 times more electricity than was spent on the manufacture of this battery.

In an hour, Americans throw away 2,5 million plastic soda bottles.

The census of the German fauna has been completed. There are 48 animal species registered in Germany. This is 3% of all species known in the world.

The deciphering of the genome of rice, a cereal that feeds more than half of humanity, started in 1998, has been completed. Almost all 389 million nucleotides have been read - the building blocks of the DNA molecule, which record all the properties of the plant. This is an important step towards the development of new varieties of rice.

It has been observed that diabetics are twice as likely to suffer from depression than healthy people. What is the cause and what is the effect is not yet clear.

Cod stocks in the North Sea and around the British Isles have declined by 20 percent over the past 85 years. Ecologists recommend completely banning cod fishing for at least a few years.

Cod stocks in the North, Irish Seas and west of Scotland have become so depleted that cod fishing is prohibited here in 2005.

The sound of thunder can be heard at a distance of up to 25 kilometers.

The earth has lost one trillion tons of weight. The fact is that specialists from the University of Washington measured the gravitational constant with an accuracy exceeding that previously achieved. Hence the clarification of the mass of our planet: 5,972. 1021 tons.

The famous firm Steinway now makes 5000 concert grand pianos a year and does not intend to increase their output.

The famous white cliffs of Dover gradually collapse and fall into the waters of the English Channel. Acid rain corrodes chalk, makes it porous, it absorbs water. In winter, the water freezes and cracks the limestone. Recently, a piece of rock almost 150 meters long collapsed into the sea.

The famous Puerto Rican Arecibo radio telescope, which is the crater of an extinct volcano, turned into a cup-shaped antenna, may stop its work due to lack of funds allocated for science.

Knowing foreign languages ​​is good for the brain. A study in Canada, where 12% of the population is bilingual since childhood, found that older adults who speak English and French are more responsive and more flexible than their peers who speak only one language.

Zoologists who observed 60 elephants in Kenya found that elephants avoid climbing mountains. Roads with a slope above 33 degrees are not to their liking. And if the elephant still goes uphill, for every 100 meters above sea level he needs a half-hour break for food - otherwise the giant will lose weight, so much energy is needed to climb.

Acupuncture does sometimes help with headaches, and needles can be stuck anywhere. Doctors from Munich (Germany) came to this conclusion. They treated headaches in 270 patients by pricking either traditional Chinese acupuncture points or randomly selected points on the skin. Both methods are equally good: the head passes in half the cases.

The game, known in the West as Scrabble, and in our country as an erudite or crossword (for the first time our public learned Scrabble under this name from the pages of Science and Life, No. 7, 1968), is now available to a personal computer. American programmer Brian Sheppard created a program that, in a competition with the best American scrabble players, won eight games and lost only two. The program, designed, of course, only for English words, is already on sale in stores. She won the title of one of the best players in the world. It is curious that, when starting work, Sheppard did not know how to play Scrabble at all, and by the end of the work he had reached the level of a master.

Of the 100 species of animals and plants that are accidentally or deliberately introduced by humans into an uncharacteristic environment, only 10% take root in a new place, and of those that have taken root, only 10% multiply beyond measure and cause environmental or economic damage. That is, only one species out of a hundred is harmful.

Of the 27 armed conflicts currently taking place on Earth, 23 are raging in mountainous areas. Hot mountain character is to blame?

Of the 6,45 billion people living on Earth, according to the World Health Organization, one billion are obese, and if this trend continues, then by 2015 there will be 1,5 billion fat people. In countries as diverse as Barbados, Egypt, Malta, South Africa and the US, 75% of women over 30 are overweight.

<< Back     Forward >>

Latest news of science and technology, new electronics:

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Primium Seneca keyboard 05.05.2024

Keyboards are an integral part of our daily computer work. However, one of the main problems that users face is noise, especially in the case of premium models. But with the new Seneca keyboard from Norbauer & Co, that may change. Seneca is not just a keyboard, it is the result of five years of development work to create the ideal device. Every aspect of this keyboard, from acoustic properties to mechanical characteristics, has been carefully considered and balanced. One of the key features of Seneca is its silent stabilizers, which solve the noise problem common to many keyboards. In addition, the keyboard supports various key widths, making it convenient for any user. Although Seneca is not yet available for purchase, it is scheduled for release in late summer. Norbauer & Co's Seneca represents new standards in keyboard design. Her ... >>

The world's tallest astronomical observatory opened 04.05.2024

Exploring space and its mysteries is a task that attracts the attention of astronomers from all over the world. In the fresh air of the high mountains, far from city light pollution, the stars and planets reveal their secrets with greater clarity. A new page is opening in the history of astronomy with the opening of the world's highest astronomical observatory - the Atacama Observatory of the University of Tokyo. The Atacama Observatory, located at an altitude of 5640 meters above sea level, opens up new opportunities for astronomers in the study of space. This site has become the highest location for a ground-based telescope, providing researchers with a unique tool for studying infrared waves in the Universe. Although the high altitude location provides clearer skies and less interference from the atmosphere, building an observatory on a high mountain poses enormous difficulties and challenges. However, despite the difficulties, the new observatory opens up broad research prospects for astronomers. ... >>

Random news from the Archive

Energy costs of biological systems for information processing 25.09.2023

The behavior, physiology, and viability of living organisms depend on a variety of biological processes, including communication between cells and other molecular components. There are many ways to exchange information in biological systems, including mechanical wave transmission and electrical depolarization. Recent studies conducted in the USA were aimed at determining the energy costs of transmitting information between cells.

Scientists from Yale University have calculated the amount of energy that a neuron requires to transmit information. It turned out that this amount is significantly greater than the energy required to erase one bit of information.

"We wanted to understand whether this represents an example of biological effectiveness or whether there are other costs," explained Benjamin Mast, one of the researchers.

Further research by Mast and his colleagues was aimed at optimizing energy costs and understanding why molecular systems use different physical mechanisms for communication. For example, neurons use electrical signals while other cells exchange chemicals.

Scientists sought to determine the optimal mode in terms of energy costs for transmitting one bit of information. All their calculations were based on the transmission of information through a physical channel in which particles and charges move according to cellular physics. In addition, they took into account the effect of the cellular environment on this channel. The use of relatively simple models has made it possible to establish a lower limit on the energy costs required to transmit currents in a biological system.

In general, scientists' calculations have confirmed the high energy costs of transmitting information between cells. These estimates can serve as a starting point to explain the high information processing costs that are recorded in experimental data.

The scientists also developed an illustrative diagram that helps understand in what situations different communication strategies, such as electrical signaling and chemical exchange processes, are most optimal. This diagram may help to better understand the principles of signaling between different cells and organs, and also explain why neurons use chemical signals to communicate at the synaptic level and electrical signals to transmit information over long distances from dendrites to the cell body.

Other interesting news:

▪ Diamond quantum computer

▪ 1200V CoolSiC G5 Schottky Diodes in D2PAK Dual Lead Package

▪ Ion Engine X-3

▪ The lawn mower runs on grass and is guided by Google maps

▪ Juice in a multilayer bottle

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Electrical safety, fire safety. Article selection

▪ article Peter I. Famous aphorisms

▪ Article How Did Democracy Begin? Detailed answer

▪ article Simulator for the skater. Personal transport

▪ article Installation of electric meters and electrical wiring to them. Encyclopedia of radio electronics and electrical engineering

▪ article Scheme, pinout (wiring) cable Ericsson 218,318,337,388. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

Home page | Library | Articles | Website map | Site Reviews

www.diagram.com.ua

www.diagram.com.ua
2000-2024