#超越光速后会发生什么? #
According to our current understanding of physics, it is impossible to exceed the speed of light, because the speed of light is the highest speed in the universe, and the mass increases infinitely, and no object can exceed this speed.
According to special relativity, if an object moves at the speed of light, its mass becomes infinite, so when an object approaches the speed of light, it needs more energy to maintain the same acceleration. If some exotic matter could somehow overcome these obstacles and exceed the speed of light, it would go against the fundamentals of physics, so scientists don't usually think it's possible.
Even if it were possible to exceed the speed of light, this could lead to some very strange effects. For example, because time is relative at the speed of light, the time of an object slows down, and as the speed of the object approaches the speed of light, time becomes slower and slower. If an object is able to travel faster than the speed of light, its time may stagnate or even go backwards. These effects go against our usual perception of time, so we need more research and understanding.
Current physics theories suggest that the speed of light is the maximum speed in the universe, and that no matter can exceed the speed of light. Therefore, it is theoretically impossible to exceed the speed of light because it violates the principle of relativity.
However, in some science fiction novels and movies, exceeding the speed of light is portrayed as a possibility. In these imaginations, it is often believed that exceeding the speed of light will lead to some strange results, such as rewinding time, increasing mass, increasing energy, and so on.
One of the more famous hypotheses is Albert Einstein's theory of relativity. Relativity predicts that as an object approaches the speed of light, time slows down, lengths shorten, mass increases, and energy increases. These effects are known as "special relativity effects." If an object can exceed the speed of light, then these effects become more pronounced, the mass of the object becomes infinite, and the energy it needs becomes infinite, which means that this process is impossible.
In addition, if an object really exceeds the speed of light, then according to another prediction of relativity, it will be impossible for the object to slow down below the speed of light because the energy it requires will increase indefinitely. Therefore, exceeding the speed of light could cause the object to be trapped forever above the speed of light, unable to return to its normal physical state.
In general, the concept of exceeding the speed of light is not supported by current physics theory. Although a similar setting may appear in science fiction, this setting is imagined and reasoned on the basis of scientific principles.
What happens assuming the speed of light is surpassable?
Assuming that the speed of light could be exceeded, many of the principles of physics would be overturned. The speed of light is a very important constant in physics, and many theories are based on the fact that the speed of light is constant. If the speed of light can be surpassed, it will have a huge impact on our understanding of the physical world.
First, according to special relativity, when mass approaches infinity, the speed of an object cannot exceed the speed of light. Therefore, if there is an object whose speed can exceed the speed of light, then the mass of this object will become infinite, and this object will require infinite energy to propulsion, which is obviously impossible.
Second, according to special relativity, when an object's speed approaches the speed of light, its mass increases, its time slows down, and its length shortens. If the speed of an object exceeds the speed of light, these phenomena will become more extreme, time will be turned back, and the length of the object will become imaginary, all of which is counterintuitive.
In addition, faster-than-light movement can also lead to confusion about cause and effect. In the theory of relativity, causality cannot be violated. If event A occurs because of event B, then event A must occur after event B. But if the speed of light can be surpassed, then cause and effect will become chaotic.
Finally, faster-than-light motion could also lead to an "atavistic effect," in which objects will move toward the early stages of their universe, turning back time and potentially disrupting many fundamental principles in physics.
The "atavistic effect" refers to the effect that may occur in some cases when an object exceeds the speed of light, which is called "causality violation" or "causal law destruction" in physics.
According to relativity, the speed of light is the largest speed limit in nature, so the concept of faster-than-light motion is not recognized in modern physics. However, some theoretical schools and science fiction writers still put forward the hypothesis that there may be faster-than-light motion, and try to theoretically explore their possible consequences.
One of the consequences is the "atavistic effect", which means that faster-than-light motion may break the law of cause and effect, leading to a reversal of causality, and the order of objects in time may be disrupted, resulting in a series of logical contradictions and anomalies.
For example, if an object moves forward beyond the speed of light, it seems that it will reach its destination faster than the speed of light, but this may lead to a situation where the object's information "rewinds" in time, that is, in some inertial reference frames, the event that occurred first may be observed after the event that occurred later, which undermines the principle of causation.
Another example is that if there are two objects A and B in a straight line, and object A moves forward beyond the speed of light, then in some reference frames, B seems to be observed first by A, but in other reference frames, B seems to be observed by A first, which destroys the order of time, that is, the paradoxical "atavism" phenomenon.
In classical physics, the behavior of elementary particles such as electrons, protons, and neutrons is determined by their physical properties such as mass, velocity, and position, which is known as Newtonian physics. However, as an object's speed approaches the speed of light, its mass increases and its time lapses slows down, known as the relativistic effect. If an object moves faster than the speed of light, its mass will increase infinitely, and time will become an imaginary number, which violates the laws of classical physics.
In this case, there is speculation that an "atavistic effect" may occur, in which objects may exhibit their early characteristics and properties, as faster-than-light motion may reverse the direction of the passage of time, bringing objects back to their past state. For example, some speculation suggests that when an object speeds faster than the speed of light, it may behave like earlier macroscopic objects, such as solids, liquids, and gases.
However, these are only theoretical speculations and have not been verified experimentally. For now, faster-than-light motion remains a science fiction concept, because no one has been able to design a system that can achieve that speed. Even if there were, there was not enough data to support these theories. Therefore, so far, we have only speculated and speculated about the "atavistic effect" caused by faster-than-light movement.