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

Why does the sun shine and warm? 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?

Why does the sun shine and warm?

Solar heat and light is enough for all living beings on Earth, despite the fact that the Sun is almost 150 kilometers away from us. And if suddenly our Sun went out, stopped shining and warming, it would become so cold that all the water on Earth would freeze, even the air would freeze. People, animals, plants would die. Our planet would become cold and dead.

The temperature on the surface of the Sun is about 6000 °C. At such a high temperature, iron and other metals not only melt, but turn into hot gases. Therefore, there are neither solid nor liquid substances on the Sun: there is only hot gas. The sun is a huge hot ball of gas.

The temperature inside the Sun is even higher than on its surface. Near the center of the ball, it reaches 15 million degrees. Such a high temperature inside the Sun has existed for several billion years and will continue to exist for about the same amount.

Author: Cellarius E.Yu.

 Random interesting fact from the Great Encyclopedia:

How did the English word for breakfast gradually come to mean dinner?

The English word dinner comes from the Old French disner, which means breakfast. Gradually, both in continental Europe and in England, this term began to be called the main meal, which happened around noon, even if the person had already had breakfast before that. In the 18th century, the use of the main course shifts further and further, and dinner can fall as early as 7 pm. At present, the British mean dinner by this word, even if they eat more at lunch.

 Test your knowledge! Did you know...

▪ How did Odysseus get Penelope, the daughter of a powerful Spartan king, as his wife?

▪ In which city does a high-speed elevated highway pass through a 16-story building?

▪ Which country produced an armored car that could move both on tracks and on rails?

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:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Lithium batteries Fanso for use in hazardous areas 03.10.2019

There is a class of stand-alone devices in industry, such as telemetry, that are designed to operate in explosive areas or environments. Such devices are subject to special requirements for intrinsic safety and explosion protection.

These requirements also impose restrictions on the energy source used in such a device, which must comply with the ATEX directive and the requirements of EN 60079-0:2012 + A11:2013 and EN 60079-11:2012 standards (for maximum case heating temperature, for voltage, short circuit current closures, etc.).

Fanso offers a range of lithium thionyl chloride batteries that comply with these regulations. These are batteries that have a bobbin design and are designed to work with small currents, but for a very long time. This type of batteries is characterized by excellent storage life (up to 10 years) and maximum specific capacity.

Fanso's ATEX certification (since February 2018) will help developers choose the right battery and ensure that the finished device passes intrinsic safety and explosion protection tests.

Other interesting news:

▪ New small craft tracking technology

▪ Climate weapons against weather anomalies

▪ Gadgets without batteries

▪ NVIDIA Tegra Note 7 Tablet with LTE

▪ From now on, all Hollywood studios support Blu-ray

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ site section Parameters of radio components. Article selection

▪ article Economic statistics. Crib

▪ article What is quartz? Detailed answer

▪ article General grounds for liability for causing harm

▪ article Rapid LED fire (option 1). Encyclopedia of radio electronics and electrical engineering

▪ article Scheme, pinout (pinout) of Siemens S10, S11 cable, pinout. 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