How do trade winds occur? Detailed answer

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

How do trade winds occur? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

How do trade winds occur?

Due to the rotation of the Earth in the region of the equator, constantly blowing winds arise quite regularly: to the north of the equator - northeast, to the south - southeast. This is the trade winds.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

How did people learn to use scales?

Just think how many things in your city people weigh every day! You won't have enough space or time if you try to list them. Today it is very important to be able to weigh things correctly. This is necessary not only in trade and production, but also in everyday life. This skill is essential in the world of science.

Who was the person who first guessed how to weigh different objects? Perhaps we will never know his name, but historical books tell us that this happened in ancient Egypt. About 7000 years ago, the Egyptians invented the first scale. Two weights were placed at different ends of a long horizontal beam and they waited until the beam stopped swaying and came to a state of equilibrium.

And here is how the oldest scales on earth looked like. A long beam was attached to a small bar with a string threaded through a hole in the middle of the beam. Each end of the beams was attached with threads in a bowl. When the bowls were empty, the beam lay horizontally: the scales were in a state of equilibrium. To determine the weight of any object, it was placed on one thicket, and a load was placed on the other, which served as a weight standard, and therefore its weight was known to everyone.

For 5000 years, this design has been the most reliable balance known to man. Already at the beginning of our time, the ancient Romans somewhat modernized them. Through a hole in a horizontal beam, they began to thread a thin rod or pin instead of a rope. Such scales began to be called a steelyard.

The plank, which hung from a rod or hook, had two ends of different lengths. An object was hung from the short one, which had to be weighed. Then a certain weight was moved along the long end of the balance until it reached equilibrium.

These two devices were the great-grandfathers of all modern types of scales known today.

Today we can weigh things that were not even thought of in ancient times. Modern scales can show how much a human hair weighs. And how much, for example, do letters written in ink on a blank sheet of paper weigh? Modern scales can also show how much a loaded dump truck weighs.

And in scientific laboratories, they use special, highly accurate scales and create special conditions for their work: after all, humidity, vibration, electric waves and other factors can interfere with the accurate operation of the scales. After all, with their help you can determine the weight with an accuracy of 1/100!

Test your knowledge! Did you know...

▪ What is Wall Street?

▪ Which countries require participation in elections?

▪ Why does the maple leaf on the flag of Canada have 11 vertices?

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

Japanese asteroid reconnaissance Hayabusa-2 12.12.2014

The Japanese spacecraft Hayabusa-2 was launched. Its target is the relatively small asteroid 1999 JU3.

The launch was carried out using a Japanese two-stage H-2A launch vehicle equipped with liquid rocket engines from the Tanegashima cosmodrome, located on the island of the same name, south of Kyushu, on the border of the Pacific Ocean and the East China Sea.

The Hayabusa-2 mission was the second attempt by JAXA (Japan Aerospace eXploration Agency - Japan Aerospace Exploration Agency) to carry out an asteroid mission with the return of asteroid soil samples to Earth. The first (and so far the only one in the world) attempt was made in 2003. However, the Itokawa asteroid research program could not be carried out in full at that time due to a number of technical problems.

The main goal of the new expedition has not changed. "Hayabusa-2" must collect soil samples from the surface of the asteroid (possibly from near-surface layers) and return them in a special capsule to Earth for a detailed analysis of the composition of the asteroid matter. The mission also aims at the technological development of geological exploration on the surface of a small celestial body.

Asteroid 1999 JU3, discovered back in May 1999, has an elongated orbit, due to which, in its motion, it crosses the orbits of the Earth and Mars. This celestial body, 920 meters in size, revolves around the Sun with a period of 474 days and has its own rotation period of about 7,6 hours. Its surface albedo is small and is estimated at about 0,06.

The Hayabusa-2 apparatus (its weight is 590 kg) is equipped with two solar panels and a xenon ion thruster. After arriving in the vicinity of the target asteroid in mid-2018, the spacecraft will observe and study in detail the entire surface of the asteroid using a range of remote sensing instruments.

For direct research of the asteroid itself, Hayabusa 2 carries on board a 10-kilogram lander - a mobile reconnaissance vehicle on the surface of the asteroid MASCOT (Mobile Asteroid Surface Scout), a small impact impactor SCI (Small Carry-on Impactor) and a mini rover MINERVA 2 (MIcro / Nano Experimental Robot Vehicle for Asteroid), designed for detailed study of the surface.

The MASCOT lander was developed by the German space agency DLR (German Space Agency) in collaboration with the National Center for Space Research of France (Centre National d'Etudes Spatiales, CNES).

Other interesting news:

▪ Camera Interface Development Kit

▪ You can disrupt the operation of the HDD with the sound of ordinary speakers

▪ Nano-cleaning of frescoes

▪ Accurate map of the ocean floor

▪ Helicopter to search for submarines

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Children's scientific laboratory. Article selection

▪ article Supercomputer. History of invention and production

▪ article What did the young ladies in pre-revolutionary Russia do to achieve a pale face? Detailed answer

▪ article Duties and responsibilities of personnel in the field of fire safety

▪ article Floppy disk with IDE interface. Encyclopedia of radio electronics and electrical engineering

▪ article Riddles about a person

Leave your comment on this article:

All languages of this page

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