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Has anyone said that where there is fire, there is smoke?
The smoke emitted by the nuclear power plant is the evaporation of the cooling water, to be more precise, the fog, (not the black smoke) on the earth is driven by the movement of the air, and the burning ash and impurities are blown up.
Alcohol burns to produce water and carbon dioxide, and there is no smoke.
There is no smoke when the magma flows underground, but when the volcano erupts, there is thick smoke.
Think of the sun as a ball of fire, rather than a ball of pulp, or more precisely a ball of plasma filled with energetic particles. Neither the environment nor the products of combustion are likely to produce smoke.
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First of all, "where there is smoke, there must be fire, and where there is fire, there must be smoke" is a wrong concept.
The smoke produced when many objects are burned in daily life is actually a matter that decomposes particles and gases when burning.
The combustion of the sun is mainly due to the nuclear fusion of hydrogen under the action of its own gravity, which turns hydrogen into neutrons and helium, and emits high-energy photons.
Neutrons, helium ions, and photons are generally not considered "smoke" in the traditional sense.
The smoke of the atomic bomb and hydrogen bomb is mainly due to the shattering of the shock wave and the ignition of other substances near the ** point by the high heat. Alcohol burns with a faint white mist, and the smoke from nuclear power plants is actually water vapor.
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Who said that where there is fire, there must be smoke, it has to do with fuel, smoke is small solid particles, pure fuel has no smoke, and the fuel burned by the sun has no smoke.
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Where there is fire, there must be oxygen, and oxygen is in **? Most of the people say that the sun is a fireball because of its high temperature, and some of them are rhetorical devices used in literary works, so there is no scientific basis for saying that it is a fireball. Then again, even if there is oxygen, then who ignites it?
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Combustion does not necessarily emit smoke, complete combustion does not emit smoke, and the burning of the sun is not the same as daily combustion. It is nuclear fusion, it is hydrogen that turns into helium, it is the upheaval of atomic nuclei, it is a physical change; Whereas, daily combustion is a chemical reaction between carbon and oxygen ignition. They are different levels of combustion, and although the form is similar, the substance is fundamentally different.
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The sun is plasma, and to put it simply, it is a fireball of high temperature and pressure.
Fire is plasma, the fourth state of matter. But the fire we usually see is not exactly plasma, most low-temperature flames are gas molecules in an excited state, and only high-temperature flames are true plasma. For example, the lightning we see, the bright light in fluorescent tubes, and the spray gun that cuts through metal are all plasma that we are more familiar with.
The state of matter is gaseous, liquid and solid, and the matter also has plasma state, Bose-Einstein condensate and fermion condensate cluster.
There is very little plasma-like matter on Earth, but 99% of the matter in the cosmic void core is in the plasma state, which is the star. All stars are in a plasma state, including our Sun, of course. So the sun is not a liquid state, but a plasma substance.
But this fire is not a chaotic mass, it is a large fireball with clear layers.
Introduction: The Sun is a plasma fireball with a radius of about 700,000 kilometers, but this fireball also has a structure. From the center, it is mainly divided into the core region, the radiation region, the troposphere, the photosphere, the chromosphere, and the corona.
The core is where the sun produces heat and photons, which occupies 25% of the sun's radius, where the pressure reaches 300 billion atmospheres and the temperature reaches 15 million degrees.
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No, but it can be "understood" as a fireball. The Sun is a huge, glowing, red-hot gas planet on its own.
The main components of the sun are hydrogen and helium, and the temperature on the surface is about 6,000 degrees Celsius, which continuously releases energy in the form of electromagnetic waves. The equivalent of 400 million tonnes of coal is released into the Earth every minute, but this is only 1/2.2 billion of the energy it releases.
The structure of the sun is mainly divided from the inside to the outside: the center is the thermonuclear reaction zone, the core is the radiation layer, the radiation layer is the troposphere, and the troposphere is the solar atmosphere outside the troposphere. The transmission of energy generated in the central region of the Sun is mainly accompanied by radiation.
Outside the central region of the sun is the radiating layer, which ranges from the radius of the sun at the top of the thermonuclear center to the radius of the sun, where the temperature, density, and pressure all decrease from the inside out. In terms of volume, the radiant layer accounts for the vast majority of the total volume of the Sun.
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The moon and the earth are hard spheres, but the sun is a large fireball of hot gas, with a temperature of 6 million degrees Celsius on its surface and 15 million degrees Celsius in its center, and anything on the sun will turn into gas. So where does the sun's light and heat come from?
There are many hydrogen nuclei in the sun, which interact with each other and combine to form helium nuclei, which emits light and heat at the same time, which is called thermonuclear reaction, and the sun is a furnace that uses atoms as fuel. One kilogram of atomic fuel is worth 3 billion kilograms of coal. The sun's atomic fuel, which will never burn for thousands of years, will provide us with light and heat forever.
Why does the sun shine and heat? What is its energy source?
Astronomers have envisioned all sorts of possibilities. A simple idea is that the Bird Closed Zen Sun is a large briquette that is burning. But if you calculate carefully, a briquette the size of the sun (1.3 million times larger than the earth) will only burn for more than 3,000 years if it burns forever.
Because the history of human beings is hundreds of thousands of years, and the history of civilization recorded in writing is more than 5,000 years. The "age" of the sun cannot be shorter than human history. What's more, if the briquettes burn smaller and smaller, the sunlight will quickly become fainter and weaker.
But in fact, after nearly 100 years of measurements, the solar luminosity has not changed. Therefore, the idea of briquettes burning is definitely not right.
Another idea is that the ancient sun was large and shone due to contraction, but after calculations, it was thought that this idea could not be held either.
In the 20th century, with the development of atomic physics, people have solved the problem of solar energy. The famous scientist Albert Einstein (1879-1955) discovered the relationship between the mass of an object and its energy. As long as a little bit of mass is converted into energy, the value is huge.
For example, the energy corresponding to 1 gram of matter is equivalent to the heat released by the combustion of 10,000 tons of coal.
The study of atomic energy has led people to think that the sun's energy source may be atomic energy. Observations and experiments have confirmed this idea.
It turns out that the sun is mainly composed of hydrogen, which accounts for more than 70% of the mass. Under the conditions of high temperature (above 10 million K) and high pressure (about 250 billion atmospheres) in the interior of the sun, hydrogen atoms undergo a "thermonuclear reaction", which combines four hydrogen nuclei into one helium nucleus. In this reaction, a portion of the mass is converted into energy, releasing a large amount of heat.
Thermonuclear reactions inside the sun, similar to a hydrogen bomb on the ground**. It is precisely because of the countless "hydrogen bomb" processes that continue to occur in the core area of the sun, so the light and heat radiated by the sun are continuously eliminated. Atomic energy is the energy of the sun.
The statement that the sun rises in the east is not true. Since the earth revolves around the sun, the earth is actually turning eastward, facing the sun.
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The sun can be understood as a fireball. Because the sun is a hot planet that shines on its own, the surface temperature is about 6,000 degrees Celsius, and the core temperature is about 15 million degrees Celsius, similar to a fireball. The average density of the Sun is grams per limb of cubic centimeters, which is about a quarter of the density of the Earth.
The radius of the Sun is about 10,000 kilometers, about 109 times the radius of the Earth. The average distance between the Sun and the Earth is about 100 million kilometers.
The sun emits light by burning large quantities of hydrogen hail through thermonuclear fusion, consuming an average of 6 million tons of hydrogen per second. Under the influence of the sun's own gravity, the central region of the sun is in a state of high density, high temperature and high pressure.
The structure of the Sun is mainly divided into thermonuclear reaction zones, radiation layers, tropospheres, and atmospheres from the inside out. The thermonuclear reaction zone is the birthplace of the sun's enormous energy.
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We often say that combustion is a chemical reaction, the process of combustion releases light and heat, and the sun is said to be a fireball, in fact, it is just a metaphor, the sun is not burning in space, and there is no oxygen there, the sun's light and heat come from the nuclear fusion reaction inside the sun.
The Sun, located at the center of the solar system, is a massive gaseous planet, and in terms of chemical composition, about three-quarters of the Sun's mass is hydrogen, and the rest is almost helium. From the center of the sun to about a quarter of the sun's radius is the sun's nuclear reaction zone, where the temperature is extremely high and the pressure is extremely high, and the nuclear fusion reaction is carried out all the time in this extremely high temperature and high pressure environment, which is the thermonuclear reaction process in which four hydrogen nuclei fuse into one helium nucleus. According to the mass-energy equation, the result of a fusion reaction is the production of a huge amount of energy, which is released around the sun, which is the source of the sun's luminescence.
Some people are worried that the nuclear fusion reaction that has been going on will deplete the mass of the sun, and the hydrogen content in the interior of the sun can be estimated by the speed of the nuclear fusion reaction, and the conclusion is that the sun will probably work normally for about 5 billion years, so we humans do not need to worry about this.
Combustion is a chemical reaction in which combustibles react violently with oxidizing agents (in most cases oxygen), resulting in the release of light and heat. During the reaction, the type and number of atoms do not change, but only the rearrangement between the atoms, which is the principle of conservation of elements in chemical reactions.
Although the sun is like a large burning fireball, the sun does not actually burn up, its light and heat come from nuclear fusion, and this process does not require air (oxygen), and there is no oxygen in the sun itself and the space in which the sun is located. Although the constituent elements of the Sun include elements such as hydrogen (mass ratio helium (oxygen (carbon), they do not undergo chemical reactions, and they do not exist in the conventional state as we know them. In the sun's high temperatures, electrons move freely from the nucleus, forming plasma.
Nuclear fusion of the sun will only occur in the high-temperature and high-pressure region of the core, and nuclear fusion reactions will not occur in other parts. In the core region, which is less than 25% of the radius of the Sun at a distance from the center of the Sun, the temperature and pressure become extremely high, allowing hydrogen nuclei to collide with each other to form helium nuclei. There are two main ways in which this nuclear fusion reaction from hydrogen to helium occurs, the first is the proton-proton chain reaction and the second is the carbon, nitrogen, and oxygen (CNO) cycle.
For a star of this mass as the Sun, the first reaction of energy is mainly the first one, accounting for 99%. Either way, the net reaction is the combination of four hydrogen atoms into a single helium nucleus. In the process, a small amount of mass is lost, which is converted into light and heat and released.
In addition, the principle of the hydrogen bomb is the same as that of the sun's nuclear fusion reaction, except that the hydrogen bomb uses deuterium and tritium (both isotopes of hydrogen), which are more likely to fuse into helium.
Some of the above content comes from the Internet.
Feng Shui BJL
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Because the sun is so hot, it looks like a ball of fire, and it looks like a ball, so the sun is a ball of fire
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On the surface, I don't know.
Verses from Wang Wei's "Make the Stopper".
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