How does the sun shine? How does the heat it produces get to other celestial bodies?

The reason why the sun shines is because due to the huge gravitational effect, the substances inside the sun attract each other and gather together, forming a huge pressure, which makes the temperature inside the sun rise, and finally **, emitting light and heat. The photoheat of the sun is due to the transfer of heat to other celestial bodies.

Nuclear fusion is constantly produced inside the sun to generate heat and heat, and the heat it produces will continue to radiate outward and eventually reach other celestial bodies.

How the sun shines is well known, the sun is fireOf course, it will glow, the heat of the sun only rushes to the sky and the earth, the calorific value of the earth is not the heat of the sun directly transmitted to the road, it is the energy of the sun transmitted to the earth, and the light on the earth, including everything, meets the sun's light and heats up independently, such as the cement floor and carbon steel plate will rise at a high temperature.

For example, the temperature of green plants and water is lower than that of carbon steel plate and cement floor, which is also based on the item, some have a high temperature, some have a low temperature, and there is also a temperature of the sun household water heater, which is higher than the temperature of general items, which indicates that the sun is transmitted to the earth is energy, not calorific value. The sun is actually a plasma balloon made of hydrogen, and it's ignition, but it's a harmful gas, which is called a thermonuclear reaction. Nuclear reactions are the release of hydrogen atoms under the action of nuclear decay caused by high temperature and high pressure.

Its destructive power is extremely terrifying, and everyone has now completed the thermonuclear reaction. That's the thermobaric bomb. The sun is engaged in thermonuclear reactions every second, so the energy it releases is terrifying.

The Earth is about 100 million kilometers away from the Sun, and Mercury is relatively close to the Sun, so it will be exposed to a lot of sunlight, and the energy released by this kind of sunlight can raise its surface temperature to more than 400 degrees Celsius, which is different on Earth. Our planet is usually at room temperature, and it's all down to the atmosphere.

The atmosphere absorbs a lot of energy and calorific value. thereby heating the surface of the earth. The sun is a large planet, and the planet is a luminous star, due to the quality of its products, it will cause the temperature and pressure of its important areas to ensure the standardization of fusion reactions.

The boundary between a large planet and a planet is bounded by mass, and according to calculations, the minimum mass of a large planet is the mass of the sunIn other words, less than this mass, its important temperature and pressure cannot cause a fusion reaction.

The sun is mainly due to the heat that the sun class is constantly producing heat and thus emitting light, and it comes to other celestial bodies through the propagation of cosmic matter.

The sun is constantly undergoing nuclear reactions, so it emits a lot of light and heat, and then enters the planets through the solar system.

"The sun is like a big ball of fire, 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."

The surface of the Sun is an "ocean" of hot gas boiling up to 500 kilometers thick, and it is not as solid as the Earth. The energy released by the nuclear reaction in the center of the Sun, after a slow and laborious journey of thousands of years, finally breaks through the photosphere and emits a dazzling light. On the photosphere, the gas begins to become transparent, allowing the sun's rays to reach the universe.

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! ”

The light and heat energy emitted by the sun** is used for the fusion of solar nuclei inside the sun. The conditions required to produce controlled nuclear fusion are very demanding. Our sun relies on nuclear fusion reactions to bring light and heat to the solar system, and its core temperature reaches 15 million degrees Celsius.

In addition, there is a huge amount of pressure that can make nuclear fusion react normally, and there is no way to get a huge pressure on Earth, but it can only be compensated by raising the temperature, but then the temperature will be hundreds of millions of degrees. Nuclear fusion is so high that no solid substance can withstand it, and it can only be confined by a strong magnetic field. This gave rise to magnetic confinement nuclear fusion.

Advantage (1) Nuclear fusion releases more energy than nuclear fission.

2) There is no high-end nuclear waste, which can not cause large pollution to the environment.

3) Fuel** is abundant, there are 10 trillion tons of heavy hydrogen on Earth (30 milligrams of deuterium per 1 liter of seawater, and 30 milligrams of deuterium fusion produces the equivalent of 300 liters of gasoline).

The sun can shine brightly, but where does it get so much energy from itself? People have speculated about this question since ancient times. Of course, the most intuitive explanation, it is believed that the sun is a large burning briquette.

However, large briquettes such as the sun have been burning, and it is only enough for more than 3,000 years. The fact that there are more than 5,000 people in human history is clearly not explained in this contradiction.

It is also proposed that the energy of the sun comes from the striking of stars, converting kinetic energy into heat and light. However, the accumulation of meteors will increase the mass of the Sun, the gravitational pull will gradually increase, and the propaganda of the Earth will become faster. If the sun's energy really comes from the influence of the stars, it will cause the earth to shorten last year or two.

However, in fact this is not the case. The Russian scientist Helmhoz proposed that the sun's energy comes from its own matter under the gravitational effect, and that the kinetic energy is converted into heat. However, calculations show that the energy produced by this contraction is only enough to be lost for 30 million years.

Since the 20th century, with the development of atomic physics, people have finally solved the problem of solar energy. Einstein discovered the relationship between mass and energy of matter, the famous mass equation e=mc2. According to this relationship, a little mass can be converted into a very large amount of energy.

For example, if all matter is converted into energy, it is equivalent to 10,000 tons of coal burning in full. In the composition of sunlight it is 71 is hydrogen, 26 is helium, and a small amount of other elements. Under conditions of extreme heat and extreme high pressure (about 25 billion standard atmospheres), hydrogen atoms will include "proton-proton chain reaction" (PP chain) and "oxygen carbonate catalysis" (CNO).

cycle) two processes, but the net effect in the end is the synthesis of 4 protons into 1 helium nucleus. In this transformation process, a small part of the mass will be lost, but it is this small part of the "lost" mass that turns into a huge amount of energy. This capacity principle is similar to that of a hydrogen bomb on the ground.

The sun consumes 100 million tons of hydrogen per second, and the loss of 4.2 million tons will be the focus of coke energy, which is equivalent to a hydrogen bomb of 1 billion tons. Thus, we can say that the core region of the Sun continues to provide the massive "hydrogen bomb**" of continuous continuous release from the Sun, which provides us with long-term warmth and brightness.

Its energy comes from the sun itself, and the sun body can shine brightly, produce a certain brightness to illuminate people, and generate a certain amount of heat to keep people warm.

It is because the mass of the sun is very large, and its interior is constantly **, so it can release so much energy.

The energy of the sun comes from the nuclear fusion of the solar element hydrogen, because the sun has a very large amount of hydrogen and can emit a lot of energy.