Free books, magazines, collections published in 1978

Free technical library

FREE TECH LIBRARY
Content of books and magazines / Year 1978

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1 April

10 years of Omsk NOU

150 years since the birth of L.N. Tolstoy

a = a + 1?!

IX holiday of young mathematicians in Batumi

X International Olympiad for Schoolchildren in Physics

XII All-Union Olympiad for Schoolchildren in Mathematics

XIX International Olympiad for Schoolchildren in Mathematics

Carbon microphone oscillator

Automation of the design of digital computing systems. Batanov L.A., 1978

Automatic telegraph message sensor

Automatic electronic digital thermometer

Active squadron

Analysis Helps Algebra

Equipment for precise magnetic recording with frequency modulation. Gordeev L.S., Fridman A.A., 1978

Arithmetic and collision geometry. (Solution of problem M449)

Astronomy of the invisible

Traveling wave and ... car tire

Tickets and boxes. (Solution of problem M465)

Future creators of space technology

In the laboratory of the universe. (E.P. Levitan, Astrophysics - for schoolchildren)

In search of a definition of surface area

What is your rating, grandmaster?

Vivianne

helix

Possible moon rain!

Armed with the coordinate method

Questions for graduates

Algebra and Analysis Questions

Geometry Questions

Do oppositely directed currents always repel?

All-Union Correspondence Mathematical School

All-Union Week of Science, Technology and Production for Children and Youth

High degrees. (Solution of problem M486)

TV Test Signal Generator

Gear geometry

Hypotrochoid

Puzzles for sums of numbers and their squares

Two physical focuses

Demo Oscilloscope

Weightlessness demonstration

Diophantine equations and rational points

Diophantine equations modulo prime

For the Christmas tree

Can you prove? - You can't prove it!

17 more questions

Another demonstration of weightlessness

Mysterious diffraction pattern

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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

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.

News feed of science and technology, new electronics

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