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There are many substances in the universe we live in, and they are composed of these substances, ranging from planetary bodies to atoms, neutrinos, and so on. These are all parts of the universe, so about the composition of the universe, it is mainly composed of energy, matter and space. These substances are made up of tens of millions of permutations and combinations to construct our vast universe.
So neutrinos hit the Earth 420 billion times per second, why do humans feel nothing? The main reasons for this are as follows. <>
1. This substance cannot be detected by one of the human senses at present. First of all, the first point is that one of our current human senses can probably see some dust in the air through some ultraviolet rays, which is the smallest particle we can see with the naked eye. But neutrinos have a mass or volume that is smaller than the dust we have in the air, so these smaller substances are not perceptible to the human eye, the senses.
Even if it hits the human earth countless times, then we humans still can't feel its existence, and our human senses have a problem that we can't perceive these relatively small substances. <>
Second, this substance is too small. Secondly, this substance is really too small, and its volume is only about 60 nanometers. Such a nanometer cannot be based on its existence with the naked eye, so even if neutrinos hit our earth and it forms a lot of matter, human beings still cannot perceive its existence, after all, one of its dimensions is too small.
3. How vast is the material world of the universe. The last point is how rich and great the material world is in the huge universe, because although these substances are too small, they are also part of the composition of the universe, including our human world, and there are also these smaller examples, even if they hit the earth a trillion times, it still won't bring any trouble to our lives.
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Neutrinos are very small, and the neutrinos that hit the earth every second together may be only the size of a postage stamp, plus the resistance in the universe, the resistance of the earth's atmosphere, to the surface of the earth is already very weak.
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Because neutrinos are so small that their mass is negligible, neutrinos hit the Earth 420 billion times per second, and humans have no sense of it.
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Since neutrinos are inert elementary particles, they basically do not interact with other particles or things, and because neutrinos are extremely small, they can pass through atoms unimpeded, so they do not have any effect on the human body.
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In fact, we do this kind of thing every day, all the time, such as the air we breathe, the air in our nose or mouth, oxygen molecules participate in respiration, become carbon dioxide molecules in the body, breathing is exchanged through the respiratory system, and carbon dioxide molecules are discharged; For example, when we drink water, water molecules also pass through the body, carrying some unwanted things (such as salt) out again in the form of sweat and urine.
Some of you may have heard that neutrinos travel through the human body all the time. Yes! There are trillions of these little things that pass through the human body at the speed of light every second, but we don't notice, however, this is because neutrinos are very, very small, only one more than a million electrons, so even the space within the atom, because it is a very wide range, and it doesn't matter electromagnetic, unless it hits directly, the electrons and protons and neutrons of the atom do not interact with it, so it will pass through almost anything, even our own Earth.
Calculations show that to intercept a neutrino beam, you need a 5 light-year thick lead plate to do that.
Of course, the food we eat is made up of molecules and atoms of various substances that pass through our digestive system, leaving behind some of the nutrients that our body needs, while the rest is excreted from the body. And so on. Therefore, it is normal for molecules and atoms of matter to move in and out of the human body.
No matter what kind of thing, as long as there is the phenomenon of material exchange, molecules and atoms will come in and out, but as a living organism, if molecules and atoms with high energy pass through the human body, they will bring harm. We all know that X-ray imaging techniques such as hospitals or security scans will have a slight adverse effect on the human body, because this X-ray with a certain energy is actually a particle that converts the difference in electron energy between two energy levels within the atom, and is generally considered to be an electromagnetic wave with a wavelength between ultraviolet and gamma rays, they only have a small amount of energy, so the damage is negligible, but the human body cannot be exposed to X-rays for a long time, because the cumulative effect will cause damage.
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Because they have a small mass, they do not affect us, they are very penetrating, they are difficult for us to feel, and they do not participate in electromagnetic interactions.
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Because neutrinos are very penetrating, they make us not feel that they are dark matter, which is very similar to neutrinos.
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Because the power of the neutrinos is too small to interact with the electromagnet, the human body cannot feel it.
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Neutrinos, known as ghost particles, are the most mysterious particles in particle physics, in the last century, scientists discovered that the decay process of matter, before and after decay does not follow the conservation of momentum and energy; To explain this strange phenomenon, in 1930 physicist Pauli proposed a tiny uncharged particle, now known as neutrinos.
More than 20 years later, scientists confirmed the existence of neutrinos with experiments, the experimental principle is: the substance in the nuclear reactor through decay to generate antineutrinos, and then the antineutrinos and protons interact to generate neutrons and positrons; Only by proving a direct connection between the two reactions would it be possible to show that an unknown particle transmitted energy and momentum, for which the scientists of the experiment were awarded the 1995 Nobel Prize in Physics.
Neutrinos are not charged, so they do not participate in electromagnetic interactions, and their masses are only about 1/100 millionth of an electron, so the gravitational effect of neutrinos is very weak, and neutrinos do not participate in strong interactions.
The only way to detect neutrinos is to use neutrinos to participate in weak interactions, and then generate other particles to detect them indirectly. However, weak interactions are effective at the scale of 10 to 18 meters (1000 times smaller than the diameter of a proton), so that neutrinos are so penetrating that they are extremely difficult to detect.
A large number of neutrinos are generated in the nuclear fusion reaction carried out in the interior of the sun, such as the fusion equation of the nucleus
1h+1h→2d+e(+)v,δe=;
where v is the neutrino, the neutrinos produced by the sun eventually reach the earth, and it is estimated that 1,000 trillion neutrinos pass through the human body every second, even at night, because neutrinos can easily pass through the earth.
At present, there are still many mysteries around neutrinos, such as the mystery of mass, the mystery of speed, the mystery of neutrinos, and so on; Perhaps the question of neutrinos can solve the mystery of dark energy and dark matter in astronomy, as well as reveal the evolution of the universe.
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According to surveys, there are quadrillions of neutrinos passing through the human body every second. These neutrinos are non-toxic and harmless to humans, and they are constantly traversing at all times. Moreover, neutrinos are not charged, making them very difficult to detect. So we don't notice it.
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Because neutrinos are not charged, they do not participate in electromagnetic interactions, and their masses are only about one ten-millionth of an electron, so the gravitational effect of neutrinos is very weak, and neutrinos do not participate in strong interactions. I can't notice it.
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This is because neutrinos can penetrate all objects, and they are very tiny, so we humans cannot detect them, and we need special instruments to observe these phenomena.
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Because the mass of neutrinos is very small, and their penetrating ability is very strong, and there is no strong mutual gravitational effect, neutrinos are also known as ghost seats, and we basically do not feel the body they pass through.
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Because the mass of these neutrinos is very small, we don't feel it at all, and the weight of neutrinos is not as large as the weight of the virus, and we can't feel it when the virus invades the human body.
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We know that in our great earth, this is a very large organic collective, with a lot of life and matter inside, and these life and matter are also part of the structure of the earth, including us humans, including other creatures on our earth, lions, flowers and plants, and so on. In recent years, scientists have discovered that in the microscopic world that we humans cannot see with the naked eye, there are many smaller molecules, atoms and other substances that are also part of the composition of the universe, but due to the limitations of our eyes, we cannot see these substances. At the same time, there are neutrinos, scientists have discovered that neutrinos hit the earth 420 billion times per second, why do humans feel nothing?
There are several reasons for this. <>
1. We humans cannot feel the changes in the microcosm. First of all, the first point is that we humans are unable to feel the changes in the microcosm, which has a lot to do with one of our own bodily functions. We humans can only see some small dust in the air with the naked eye, and they can only see it through the sun's rays.
Let us see these dirty bacteria in our daily life, we human eyes can't distinguish them, so we can only use optical microscopes or electron microscopes and so on. Not to mention that aspect of our senses that wants to explore these microcosm of things, it is even more impossible. <>
Second, neutrinos are too small. In fact, the other point is that neutrinos are so small, they are much smaller than atoms. It can float directly anywhere in us, including our human body, including other parts.
And that's why smaller things hit our planet that we humans can't even perceive. <>
3. There is no danger to the earth. The last point is that such neutrinos are not a threat to us humans, let alone compare, even if the Earth hits a quadrillion of times, it will not have any effect.
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First of all, neutrinos can pass through the human body without producing any sensations. Neutrinos crash into the Earth 420 billion times a second, but the impact area is so small, it is said to be the size of a postage stamp.
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Because these microscopic objects, such as air, are also impacting human beings all the time, but human beings also can't perceive them, because their mass is very small, so they don't feel it.
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Because the impact of neutrinos is very small, and humans have adapted to it, humans have no sense.
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This is because the power of neutrinos is simply insignificant, it hits the earth 420 billion times per second, a day is equal to 24 hours, an hour is equal to 60 minutes, a minute is equal to 60 seconds, and 24 hours is 86,400 seconds, then it is equivalent to a total of 362,880,000 billion times a day, but unfortunately, the earth is Mount Tai, and the impact of neutrinos is just an egg hitting a stone, and the earth's magnetic field does not react at all, so human beings have no feeling.
You must know that our human beings from the ancient period of slash-and-burn farming, living in caves, drilling wood for fire, with the progress of knowledge and civilization, to the later economic development caused by the three industrial revolutions, gradually entered the field of modern science and technology, and later with the great physicist Einstein's quantum mechanics, general relativity, special relativity and other theories gradually came out, human beings have successively solved the world's unsolved mysteries.
The original chemistry textbook explanation of neutrino is that it is an uncharged particle, but the real situation is that it is a particle emitted from the sun and hits the earth at a very high speed, but its impact has no effect on the earth at all, because it itself has nothing to do with the earth's energy and magnetic field, and it is not solid, so it will not be as obvious as a meteorite impact.
So people began to collect more neutrinos, hoping to draw the best conclusions, but because it is an emission source from the sun, it is even more difficult to collect the real on the earth than Nuwa to collect colorful stones, so scientists have to send a cosmic solar probe to the universe to complete this mission, and finally have the results after reaching the sun.
According to the research results of American scientists, when they conducted concentrated observation experiments on the collected neutrinos, they found that their size, volume, and proportion were no different from those of postage stamps, so they would not have an impact on the earth.
At present, scientists have built a machine based on the principle of sunlight irradiation, which is specially used to collect neutrinos.
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