Free books, magazines, collections published in 1982

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FREE TECH LIBRARY
Content of books and magazines / Year 1982

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150 years ago. (Pavel Lvovich Schilling)

30 diagrams of amateur radio devices. Drobnitsa N.A., 1982

III Moscow Tournament of Young Physicists

IV Moscow Tournament of Young Physicists

VI All-Union Summer School for Young Programmers

XIII conference of young mathematicians in Batumi

XIII International Physics Olympiad

XVI All-Union Olympiad in Mathematics

XXIII International Mathematical Olympiad

And what do you think?

Automatic charger

Automatic reclosing in distribution networks. Golubev M.L., 1982

Automatic color music device

Automotive stroboscopic devices STB-1 and Auto-spark

Magic Cube Algorithm

Archimedean force and whales

Astronomy and Ancient Chronicle

Astronomy: science and its creators

Nuclear reactor of the Institute of High Energy Physics of the Academy of Sciences of the Kazakh SSR

Atoms wander through the crystal

Newton's aerodynamic problem

Bubbling-piezometric methods for monitoring the physical and chemical properties of liquids. Laptev V.I., 1984

Running lights on transistors

Non-contact voltage detector in a helmet

Bezpodladochny installation of electrical machines. Kaminsky M.L., 1982

Display unit of digital frequency meter

In the blue space

What's the difference?

Introduction to circuitry. Galperin M.V., 1982

Fun quiz

Viktor Mikhailovich Glushkov

Maelstrom

Around the computer

Everyone lies calendars?

All-Russian Olympiad for schoolchildren

Input stages of high quality low frequency amplifiers. Krasov Yu.S., 1982

High quality three-way loudspeaker

Mesh field generator

Pulse generators on digital microcircuits (review)

year of miracles

Year of Miracles (fifty years ago)

Anniversary of a wonderful article

Gravity capture

Daniel Bernoulli

Two ways to calculate electrical circuits. (Solution of problem M709)

Two IC devices for switching light sources

Two puzzles

Two school tasks in life: about cutting out a bar of the greatest strength, about making an expansion vessel with the least amount of material. I. Jacques

Frequency dividers on microcircuits

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Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Smart grenade launcher XM25 19.08.2013

A Pentagon official said that the XM25 grenade launcher will soon drop the letter "X", which means that the product is experimental. In other words, the XM25 will go into production, though at first in small batches - the first series will have 1100 grenade launchers and their ammunition. The US Army is currently working on implementing some improvements regarding the fire control system, battery life, grenade weight and size. After the completion of this work, the US Army will receive weapons ready for widespread combat use.

The XM25 grenade launcher is a 5,5 kg semi-automatic four-shot grenade launcher equipped with a smart sight with built-in thermal imager, ballistic computer and range finder. The sight allows you to detect the enemy at any time of the day and in any weather, determine the range to the target and program a 25-mm grenade to detonate in a certain place near the enemy, for example, above a trench, a tank hatch, in a window opening, etc. This allows you to reliably hit the target behind shelters that protect against conventional small arms fire. Based on several hundred episodes of the use of the XM25 in Afghanistan, the military concluded that the new weapon is much more effective than most wearable support weapons. A shot from the XM25 usually stops the Taliban attack, and the grenade launcher provides high accuracy at a distance of up to 500 m, that is, further than the Kalashnikov assault rifle.

Guidance occurs as follows: the soldier first finds the target with the help of a perfect 4-fold thermal imaging sighting system integrated into the weapon, then the laser rangefinder is turned on and information about the range to the target appears in the eyepiece of the sight. The soldier needs to select a point near the position of the enemy: on the side, above, behind and press the trigger - the grenade will explode behind, above, under or to the side of the shelter. When exploding, a grenade strikes manpower within a radius of 6 meters.

In one of the episodes of the use of the XM25, a member of the foot patrol, Sergeant Carlos Smith, discovered an ambush using the XM25 sight. Usually the Taliban hide behind rocks, hills, ruins and other shelters that protect from bullets. But in this case, the fighter had an XM25, and a 25-mm grenade exploded right above the enemy machine gunner. As a result, the ambush was thwarted - the enemy fled, taking the wounded with him. In general, the use of a "smart" grenade launcher reduced the battle from the usual 15-20 minutes to 5-7. Thanks to the XM25, the soldiers did not have to approach the enemy from the flanks - the XM25 grenades simply smoked the enemy out of cover, showering him with a hail of shrapnel. For its high combat qualities, the XM25 was nicknamed Punisher ("Punisher").

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