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 much time does a modern person take to sleep? 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 much time does a modern person take to sleep?

Less and less. For example, over 20 years in Germany, the average sleep duration has decreased from 8,3 to 7 hours.

Author: Mendeleev V.A.

 Random interesting fact from the Great Encyclopedia:

What word should not be spoken by members of the South Australian State Parliament?

In 2003, South Australian MP Carlene Maywald asked the Minister on water restrictions: "Please tell us how you are going to communicate your plans to the general public?" The Speaker of Parliament did not let the minister answer, saying that the word "please" should not be used here, since MPs should not beg or ask anyone. It turned out that this rule was written down in the first regulations of this parliament.

 Test your knowledge! Did you know...

▪ How did American football start?

▪ What is the principle of thermal insulation?

▪ Why are zebras striped?

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

Mind reading helmet 20.06.2021

US company Kernel said its engineers were able to create a mind-reading device. So, a special helmet reads and analyzes brain activity. Moreover, it is going to be put on the market at a cost of 50 thousand dollars.

The helmet picks up neural waves and then interprets them in real time. A device called Flow uses lasers to analyze brain activity. It can be connected to a computer using a USB connector to track thoughts.

The new device can help doctors in various studies, but the need for it for ordinary users remains in question.

Other interesting news:

▪ food from thin air

▪ ESP32-PICO-D4 - the smallest ESP32 WiFi module

▪ Intel to build chip factory in Ohio

▪ Electronic tongue recognizes food taste

▪ Electronic capsule for the study of the digestive system

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Assembling the Rubik's Cube. Article selection

▪ article Is it easy to be young? Popular expression

▪ article How does the presence of ghosts affect the price of an English house? Detailed answer

▪ article Medical statistician. Job description

▪ article Bandwidth Throttling. Encyclopedia of radio electronics and electrical engineering

▪ article Switching laboratory power supply on the LM2575T-Adj chip, 15-18 / 1,2-15 volts 1 ampere. 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