What is the solar corona? Detailed answer

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What is the solar corona? Detailed answer

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What is the solar corona?

Have you ever seen a photo of a solar eclipse? It shows an uneven glow around the dark disk of the Sun. This glow is called the crown. To understand what a corona is, we need to know something about the Sun itself. For starters, at least the fact that the Sun - at least on its surface - is not as solid as the Earth. Its surface - the only thing we can observe - is composed of gases.

Indeed, the Sun is surrounded by four layers of gaseous matter, which hides everything that is under it. The inner layer is called the photosphere. The next two layers are known as the opposite layer and the chromosphere. Together they form the atmosphere of the Sun. The outer layer is the crown.

Let's see what these gas layers are. The photosphere (or sphere of light) is what we see when we look at the Sun. Dark spots are often observed on the bright surface of the Sun. The "opposite layer", which consists of gas vapors, extends several hundred kilometers from the photosphere. This layer is not visible, but it can be studied with an instrument called a spectrograph. Beyond the opposite layer is the chromosphere, or color sphere. Its thickness is about 14 km and it consists mainly of hydrogen and helium. During a total eclipse, it glows around the dark disk with a bright scarlet flame.

From this red border, fiery clubs of the same composition are ejected to a height of more than a million kilometers. They are called prominences and look like huge flashes of flame. Then comes the outer layer, which is called the "crown". It consists of a gaseous substance and has two parts. The inner corona, following the red chromosphere, is a pale yellow band. The outer crown is white, with streams extending from the edge for millions of kilometers. This is the description of the layers surrounding the Sun. What's under them is still a mystery.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

When did you start wearing jewelry?

Jewelry can be made from anything. But most of all, those that are made of rare and precious metals are valued. Gold is the oldest of the precious metals used in jewelry. It began to be processed in ancient Egypt. And this is more than 4 thousand years ago. The Egyptians made fine jewelry from gold, silver, enamel and precious stones. They wore earrings, rings, brooches, just like we wear them now. They also wore heavy necklaces and body plates and adorned their hair.

In ancient Greece, fine jewelry work was as highly valued in jewelry as the material from which they were made. For example, beautiful butterflies or grasshoppers were made from golden thread. In addition, the Greeks loved cameos. Pearls, amber, coral were their favorite gems.

The most magnificent ancient jewelers were the Etruscans, who lived in northern Italy. They made ornaments of intricate shapes and with great skill. Instead of a shiny surface, their gold pieces had a grainy surface, as if they had been dusted with fine gold powder. The Romans wore very elaborate jewelry to show off their wealth. Sometimes every single finger was in rings. Jewels were worn by both men and women. They were especially fond of pearls and emeralds.

In the Middle Ages, almost all jewelry artisans were monks. The monks devoted all their energy and diligence to the manufacture of church decorations. In the 1327th century, goldsmiths' guilds arose. In London in XNUMX goldsmiths formed their own association.

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Random news from the Archive

Gamers make decisions faster and more accurately 18.07.2022

American neuroscientists from the University of Georgia gathered a group of 47 young people, 28 of whom often played video games, and the remaining 19 rarely or never.

Participants were placed in an MRI machine with a mirror inside that reflected a screen with moving dots. Volunteers had to press the button with the right or left hand, corresponding to the movement of the dot. Sometimes the point stopped - in which case the participant did not have to press the button at all.

The scientists found that video game enthusiasts performed the task faster and more accurately than others. What's more, subsequent analysis of brain scans showed clear differences associated with increased activity in certain areas of the brains of gamers.

There was no difference between the speed and accuracy of the response. Gamers were better at both.

According to the researchers, in the future, computer games can be used as a tool for cognitive decision-making training based on visual perception.

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