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 deep can a sea turtle dive? 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 deep can a sea turtle dive?

The record holder for diving depth among reptiles is the leatherback turtle. This is the largest of all modern species of turtles, living in all oceans except the Arctic, in length can exceed 2 meters. The largest specimen found weighed 916 kilograms.

Having placed depth gauges-recorders on the shells of several individuals, zoologists discovered that one of the experimental turtles dived in the Atlantic, far from the coast, to a depth of 640 meters. There is reason to believe that turtles of this species are able to dive even a kilometer.

Author: Kondrashov A.P.

 Random interesting fact from the Great Encyclopedia:

How did music come about?

Have you ever walked through the woods and come across a small stream, merrily babbling along the path? It sounds like music, doesn't it? When the rain drums on the roof, a bird gently sings - isn't that music?

When a person began to observe what was happening around him, he found that music was everywhere. And when he wanted to express great joy, when he wanted to jump, shout, expressing what he felt, he heard music in himself, although, perhaps, he could not yet put it into form. Gradually, man learned to sing - this was the first music created by man. What feeling do you think a person would like to express in a song in the first place? Happiness? Yes, the happiness of love. The first songs were love songs.

On the other hand, when a person was face to face with death, which horrified him, he expressed these feelings in various types of songs, for example, dirges or funeral songs, church hymns. Therefore, love and funeral songs were the first music created by man.

Another kind of music appeared with the development of dance. The man needed accompaniment during the dance. So he clapped his hands, snapped his fingers, or beat the drum. The drum was probably the oldest instrument that man invented to produce sounds. It is so ancient that we cannot trace its beginnings in history, but it is found in all ancient people throughout the world.

The most ancient wind instruments created by man were whistles and reed pipes. Whistles were made from bone, wood and clay. From this developed the flute. This is a very ancient instrument, the Egyptians owned it more than 6000 years ago. Stringed instruments followed suit. Did you know that they already existed in Ancient Egypt?

 Test your knowledge! Did you know...

▪ What is epilepsy?

▪ What is the difference between registered and preferred shares?

▪ Which Russian emperor believed that Americans eat human meat?

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

frozen light 08.03.2004

In 2001, two groups of scientists reported that they had succeeded in stopping the light. One under the direction of Mikhail Lukin, and the other - under the direction of Lene Howe.

Both groups slowed down the speed of light by passing it through gas atoms. Lukin used hot atoms of rubidium, Howe used supercooled sodium. Both groups reduced the speed of light to zero, but in doing so, all the photons were absorbed. The momentum could be regenerated because the energy of the photons was stored in the atoms. But when the pulse stopped, technically it contained no light at all.

Lukin and his colleagues Mikhail Baisky and Alexander Zibrov have now managed to stop light for a fraction of a millisecond with all their photons using a new method. But they believe that the light can be stopped for a longer time. This could be useful for use in telecommunications systems that send optical signals, or, even more fantastically, in quantum computers.

Other interesting news:

▪ Super exotic e-liquid

▪ cloud in the universe

▪ External flash for smartphones Apple iPhone

▪ Sony Ericsson LiveView Accessory

▪ Barge with hydrogen electric propulsion

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Welding equipment. Article selection

▪ article You and I are of the same blood, you and me. Popular expression

▪ article Which country is the largest in South America? Detailed answer

▪ article Ziziphora capitate. Legends, cultivation, methods of application

▪ article Switching power supply with a voltage regulator 1e.32 V with a power of 200 W. Encyclopedia of radio electronics and electrical engineering

▪ article Antenna amplifier power supply, 9-12 volts 20 milliamps. 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