In the vast universe, there are still many phenomena that cannot be understood by human beings or explained by science. The mysterious universe seems calm, but there are all kinds of murders hidden in it. Take the black hole in the universe as an example. It is the natural enemy of all matter. As long as the matter passing by it, there will be no life left. It will be swallowed up completely and there will be no residue left! That’s the terrible thing about the universe.
In addition to black holes, there is another hidden killer in the universe, which is the speed of light. From the perspective of Einstein’s theory, once any object reaches the speed of light, it is likely to change the law of conservation of energy, and its mass will change dramatically in an instant.
We learned when we were reading, which is directly proportional to the quality and speed. In other words, the greater the mass and the faster the speed of an object, the greater its kinetic energy and the greater the energy generated.
The speed of light is the fastest speed in the universe. If an object hits the earth, its speed can generate huge energy for the material. So if a tiny grain of sand hits the earth at the speed of light, what will it do to the earth? What are the consequences for the earth?
Although a beach is very vast, every grain of sand that makes up the beach is very small in our opinion, even the size of sand is not as big as ants. Investigation shows that this grain of sand, which weighs only 1 mg and has a diameter of only 0.9 mm, fell from space.
When a free falling body falls to the earth, it will be burned in the middle of the way because of the obstruction of the atmosphere and the heat generated by friction with the atmosphere. What if there is no air? Will this grain of sand cause damage to the ground?
Scientists have carried out simulation experiments on this. After a grain of sand accelerates continuously until it reaches the speed of light, its mass reaches infinity. It is an invincible state. Any hard object is not worth mentioning in front of the sand moving at the speed of light, as if it does not exist. It is easily broken down. Therefore, if this grain of sand collides with the earth at the speed of light, we may not have reacted. The earth has been knocked out of a huge pit!
Although the volume of the sand itself is very small, its mass is infinitely large according to the speed of light attached to it. It takes no effort to make a huge hole in the earth. After the impact of the earth, there will be a series of chain reactions.
First of all, it will directly cause violent crustal movement, and the intensity of the earthquake is very high. Then, the sea level will rise suddenly and form a tsunami hundreds of meters high, whistling towards the urban areas. In addition, volcanoes in various regions will erupt, and the sky has been in a state of no vitality due to dust.
In fact, the earth is hit by not only a grain of “sand” every day, but also suspended rock particles are distributed around the earth. The size of the particles is as big as sand. For them, the earth’s gravity is very big. Under the attraction of the earth’s gravity, they are hitting the earth every day.
However, their speed is not as fast as the speed of light, and the fastest speed is only 11.2 kilometers per second, which is not destructive to the earth. In addition, these rock particles are very small in mass, so they were burned by the atmosphere before they hit the earth.
Therefore, although the speed of light is the most terrible, any object that is blessed by it will have amazing power to destroy everything. However, the universe also has a series of self-protection mechanisms, early rules, any object with mass can’t move at the speed of light. Otherwise, the whole universe may fall into an irretrievable situation. So don’t worry about sand hitting the earth!
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