Why are deep wells drilled? Detailed answer

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

Why are deep wells drilled? Detailed answer

Big encyclopedia for children and adults

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

Did you know?

Why are deep wells drilled?

To obtain information about the depths of the earth's crust in the hope of using underground heat to generate electricity. In 1995, a well 80 cm in diameter was drilled in Germany at a depth of 14 km.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What is noise?

Sound is generated by mechanical vibrations. However, in order for these vibrations to become audible, they must occur in some medium: air, liquid, or solid. Through the medium, the vibration sound can reach the listener's ear. Oscillations can be correct, that is, in other words, the object creates waves in the medium that follow at strictly defined time intervals. In this case, the result is a melodic sound. However, if the vibrations are wrong, then their effect on our ears is much less pleasant.

The sound resulting from such vibrations is called noise. Sounds differ from each other in volume, pitch and timbre. The loudness of the sound depends partly on the distance of the listener's ear from the sounding object, and partly on the amplitude of the vibration of the latter.

The word amplitude means the distance that a body travels from one extreme point to another during its oscillations. The greater this distance, the louder the sound. The pitch of the sound depends on the speed or frequency of the vibrations of the body. The more vibrations an object makes in one second, the higher the sound it produces. However, two sounds that are absolutely identical in volume and pitch may differ from each other.

The musicality of a sound depends on the number and strength of the overtones present in it. If the string of a violin is made to oscillate along its entire length so that no additional vibrations occur, then the lowest tone that it can only produce will be heard. This tone is called the main tone.

However, if additional vibrations of individual parts occur on it, then additional higher notes will appear. Harmonizing with the main tone, they will create a special, violin sound. These notes, higher than the root, are called overtones. They determine the timbre of a particular sound.

Test your knowledge! Did you know...

▪ Can fish hear?

▪ What style is played by a band whose vocalist is a parrot?

▪ Which mathematician comprehended the basics of science from the wallpaper in the room?

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

Sounds of nature are good for health 30.03.2021

Scientists from the US analyzed studies of the results of listening to natural sounds and found amazing benefits for human health.

As part of the "Synthesizing the Health Benefits of Natural Sounds and Their Distribution in National Parks" study, the team determined that people experienced reduced pain, reduced stress, improved mood, and improved cognition. Water sounds were most effective in enhancing positive emotions and improving health, while bird sounds combat stress and irritation.

Specialists carefully studied sound recordings from 251 objects in 66 US national parks. Dozens of Colorado State University students have identified different types of sounds in the recordings, the result of more than a decade of collaboration between CSU and the National Park Service.

Other interesting news:

▪ Beats Electronics Powerbeats2 Wireless Headset

▪ Habits change the brain

▪ Septic tanks generate electricity from their contents

▪ FAST telescope

▪ Phone with repeat

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site The most important scientific discoveries. Article selection

▪ Article Half World. Popular expression

▪ article Which writers and musicians cut the texts into pieces and shuffled them? Detailed answer

▪ Tractor article. Standard instruction on labor protection

▪ article Low-frequency amplifier on the K224UN17 chip. Encyclopedia of radio electronics and electrical engineering

▪ article K1464CA1 - two voltage comparators with open collector output. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

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