To what extent does the sun shine and heat up to what extent does the accumulation of matter begin?

The reaction of hydrogen atoms and helium atoms in the sun, that is, nuclear fusion, causes the sun to shine and heat.

The sun emits a huge light every day, nourishing all things in the world, making the earth full of life, and multiplying the darkness of a vibrant scene, have you ever thought about such a question; Why does the sun shine brightly? What causes it? <

The daily burning loss of the sun is large, and the mass of the sun is very large; There are a lot of raw materials; Moreover, the nuclear fusion reaction area is small; At the same time, under the combined action of the sun's gravity and magnetic field, the energy inside the sun is released outward in a relatively stable way.

The sun is carrying out nuclear fusion reactions all the time, and the so-called nuclear fusion reaction is to combine two lighter atomic nuclei to form a relatively heavy nucleus, and in this stage of change, two nuclei will release a part of the mass in the form of energy in the process of forming a nucleus. In the universe, all stars are undergoing this reaction process from beginning to end. <

In stark contrast, the time required for nuclear fusion reactions in the interior of the Sun is very long, and it is inconceivable that nuclear fusion reactions have been going on for 4.6 billion years so far, and will continue to carry out nuclear fusion for 6 billion years in the future.

When the hydrogen atoms and helium atoms in the sun react, that is, at the end of the sun, the phenomenon of "helium flash" will occur, and when the helium flash bursts, it will also be a critical moment for human beings to face life and death. <>

The mass of the Sun, due to its unusually large mass, should be about the mass of the entire solar system; According to Newton's law of gravitation, we can intuitively see that the gravitational attraction to the earth will gradually decrease due to the loss of mass due to the loss of mass of the sun, and one day in the future, the earth may face an existential crisis.

After the success of the hydrogen fusion experiment, people thought that the sun's light and heat may be related to hydrogen fusion, and after discussion, it was decided to use the phenomenon of hydrogen fusion to explain the phenomenon of heat and light on the sun, and there were many doubts.

The reason why the sun shines is because of the constant nuclear fusion hydrogen bomb going on inside the sun**.

The sun is made up of 26% helium and 71% hydrogen, as well as some other small elements. Under the conditions of extreme high pressure and extreme heat in the interior of the sun, hydrogen atoms undergo thermonuclear reactions, and the net effect is that the final net effect is the fusion of 4 hydrogen nuclei into 1 helium nucleus. A small part of the mass is lost in the process of this transformation of matter, but it is this small part of the lost mass that is converted into a huge amount of energy.

This production capacity principle is similar to the hydrogen bomb** on the ground, it is the continuous occurrence of countless large-scale hydrogen bombs** in the core area of the sun, providing a steady stream of energy to the sun, the sun will continue to shine and bring warmth and light to the earth.

The Sun was formed about 100 million years ago in a cloud of collapsed hydrogen molecules. The time of the Sun's formation is measured in two ways: the Sun's current age in the main sequence zone, confirmed using computer models of stellar evolution and primordial nucleosynthesis, which is about 100 million years old.

This is very consistent with the radioactive dating of the oldest material of the sun is 100 million years old.

The Sun has reached middle age in the evolutionary phase of its main sequence, in which nuclear fusion is the fusion of hydrogen into helium at the core. More than 4 million tons of matter are converted into energy in the Sun's core every second, producing neutrinos and solar radiation. At this rate, the Sun has so far converted about 100 Earth-masses of matter into energy, and the total time spent by the Sun in the main sequence is about 10 billion years.

The sun is an indispensable thing in human life, and without it, the world would be destroyed. The sun radiates heat and radiance. to give birth to the life of the earth.

But many people don't know how the sun emits light and heats. I believe that many friends are very puzzled, so I will answer your doubts below.

The sun radiates a huge amount of energy at all times, and it is like a big blazing fireball, bringing light and heat to the earth. But even so, the earth receives only 1/2.2 billion of the sun's total radiant energy. In 1938, the discovery of the nuclear reaction finally solved the mystery of the sun's energy.

The nuclear reactions inside the nucleus cause the sun to produce amazing energy. The sun is extremely rich in hydrogen, and these hydrogen nuclei combine to form helium nuclei at high temperature (15 million degrees Celsius) and high pressure in the center of the sun, and at the same time release a large amount of energy, which is emitted in the form of light and heat.

The sun is of great energy'The source is a thermonuclear reaction that takes place inside the sun to convert hydrogen into helium. The sun has an extremely rich amount of hydrogen consumed by nuclear reactions, and the hydrogen on the sun will supply the sun to continue to shine for at least 5 billion years!

The sun shines, it heats up, it's a big ball of fire, and it's a metaphor to illustrate the method. The method of using the similarities between two different things to compare them to highlight the shape characteristics of the things and enhance the vividness and vividness of the explanation is called analogy.

The method of illustration of analogy in the expository text is consistent with the metaphor and association in the figure of speech. The difference is that figurative rhetoric has similes, metaphors, and borrowings, while illustrations use similes and metaphors, while borrowings are not appropriate.

The sun shines, heats up, and is a big fireball", comparing the "sun" to a "big fireball" is an analogy.

There are many convertible hydrogen atoms inside the sun, they fuse into helium atoms, and a lot of energy will be released during the fusion process and volatilized through various activities of the sun, and the particles in the sun are very fast In the interior of the sun, 4 hydrogen atoms undergo hydrogen nuclear fusion and shrink into a helium atom, releasing huge energy, which is light and heat.

The sun uses nuclear fusion to generate light, and when two very light nuclei meet at high temperatures, they synthesize new nuclei and release a huge amount of energy.

About 100 years ago, scientists in Germany and Britain proposed that the molecules in the sun would collapse to the center under the action of gravity according to the law of conservation and transformation of energy, and that the kinetic energy of the molecules would turn into heat energy in the process of collapse, so the sun maintained its extremely high temperature and radiated light and heat.

American physicist Bate extended the theory of fusion to the sun, and he believed that the fusion of hydrogen atoms into helium atoms at a high temperature of up to 20 million degrees inside the sun released a huge amount of energy, and the solar energy release value calculated according to these nuclear fusions was quite consistent with the observed value.

Hydrogen-helium nuclear fusion reactions are constantly taking place inside the sun, and nuclear fusion produces a huge amount of energy that ignites the entire Taiyin Holding Sun, thus emitting light and heat.

Hydrogen-helium fusion reactions are constantly taking place inside the sun, and nuclear fusion produces a huge amount of energy, igniting the entire sun, thus emitting light and heat. The sun's hydrogen-helium nuclear fusion will continue to consume hydrogen, and then helium will participate in nuclear fusion, helium-carbon nuclear fusion will occur, and the double nuclear fusion combustion will greatly increase the temperature and brightness of the sun, and the expansion force will also increase.

In the 20th century, with the rapid development of productivity, human scientific knowledge has also been rapidly improved. Scientists used their knowledge of nuclear physics to create atomic and hydrogen bombs.

The sun is like a blazing fireball, shining and heating all the time. Its brightness is unmatched by any other celestial body, and it is more than 10 trillion times brighter than the faintest stars visible to the naked eye. If a 12-meter-thick crust is placed on the surface of the sun, the heat emitted by the sun can completely melt the crust after 1 minute.

And for the long history of mankind, people have not noticed the slightest diminution of the sun's light and heat. So, where does such a huge and lasting energy come from?

It turns out that the fuel in the sun is hydrogen, and the embers after its combustion are helium, and the fusion reaction of hydrogen produces solar energy. Therefore, the combustion process that takes place on the sun is not the result of the burning of matter inside the sun, as most people think.

The thermonuclear reaction that takes place inside the sun to convert hydrogen into helium is the source of its enormous energy. The hydrogen stored on the sun could at least supply the sun to continue to shine brilliantly for 5 billion years as it does now! Even if all the hydrogen on the sun is burned, there will be other thermonuclear reactions that will continue to take place, so the sun can continue to emit its tremendous light and heat!