Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

How did a simple rope help Allied pilots to make contact with primitive tribes? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article Comments on the article

Did you know?

How did a simple rope help Allied pilots to make contact with primitive tribes?

During World War II, Allied pilots flying over primitive tribal areas were advised to carry a rope in case of a forced landing to facilitate contact with the natives. When they approached, it was supposed, as if by chance, to get a rope from his pocket and make figures like a "cat's cradle" out of it. Several times the pilots had to resort to this occupation, and the natives watched with friendly interest, and then asked for a rope and showed figures known to them.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

How does a Coca-Cola manufacturer acquire coca leaf extract?

Coca-Cola contains coca leaf extract, although in much smaller quantities than it was in the early years of its sales. The Coca Cola Company buys this extract from only one supplier - Stepan Company, the only company in the United States that is allowed to import coca. Moreover, for Coca-Cola, leaves are supplied after all the cocaine has been obtained from them, which, in turn, is supplied to the Mallinckrodt pharmaceutical plant. It is the only plant in the United States with government approval to produce cocaine-containing medical products.

 Test your knowledge! Did you know...

▪ How did magic originate?

▪ What is the longest bike in the world?

▪ Why didn't Kubrick respond to a letter of admiration from Kurosawa?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

Radiation heat for solar panels 14.02.2020

A team of modern energy engineers from the University of California, Los Angeles, presented their new project, which is a unique device that can capture radiant heat and increase the amount of electricity generated by simply converting sunlight into electricity itself. Scientists note that their new device should hardly be considered as self-sufficient in the strict sense of the word, but instead it is better to look at it as an active module for improving the performance of solar batteries, and in a noticeably more productive manner.

The fact is that the concept of cheap electricity in itself is quite attractive - especially for those people who live in rather poor regions of the planet, who are deprived of the opportunity to have access to it on a permanent basis. Therefore, teams such as the one from California are making every effort to make life easier for such people. The new project is a device costing about $30 that can capture dissipated radiant heat - coming mainly from active solar array modules - and using the phenomenon of natural cooling to keep the residual heat inside the cells of solar panels and batteries.

In this way, it is much easier to cope with the capture, storage and distribution of more solar energy than when using standard functionality and equipment, which cannot always present exactly the result that is needed by both ordinary users and experts.

Other interesting news:

▪ Avalanche of information

▪ Forests do not save from excess carbon dioxide

▪ LED lasers are a threat to aircraft

▪ DAP-04 - 4-channel DALI to PWM converter

▪ E Ink Mobius screens for smartwatches

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Calls and audio simulators. Article selection

▪ article by Charles Warner. Famous aphorisms

▪ article What is the correct name of the Argentine province of Jujuy? Detailed answer

▪ article Methodist of the educational department. Job description

▪ article Prefix for measuring frequency characteristics. Encyclopedia of radio electronics and electrical engineering

▪ article Electronic Antenna Switch. 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