What happens when an object moves faster than the speed of light?

It is impossible for an object to exceed the speed of light, and as far as I know, Einstein assumed that the speed of light is not the same relative to any frame of reference (which has been proved by a large number of experiments), from which the energy of an object with mass is e=mc 2 and v is the speed of the object. From this it can be seen that when v tends to c, an infinite amount of energy needs to be supplied to this object, so there is no object that exceeds the speed of light.

However, in theory, objects moving faster than the speed of light will turn back time, let's say, if you sit in a spaceship that is moving faster than the speed of light, you will be younger and younger.

For specific knowledge, you can take a look at Einstein's theory of relativity.

No, we are moving at the speed of light.

It is impossible to do so, according to the special theory of relativity, the greater the velocity of an object, the greater its mass, and the closer it is to the speed of light, its mass will increase very quickly, tending to infinity.

From the kinetic energy equation, the greater the mass of the object, the greater the energy required to reach a certain velocity, and when the mass tends to be infinite, the energy required to reach the speed of light is infinite.

So it is impossible to reach the speed of light.

If the speed of the nucleus slowly increases, the velocity of the electron relative to the nucleus will slowly decrease, and when the velocity of the nucleus reaches the speed of light, the speed of the electron can be said to be stationary in the nucleus. Suppose that people can reach such a speed, and all the atoms in the human body are moving in this form, then life will be extended, and the life span of human beings will be extended, assuming that the time of 10,000 years can be shortened to 1 day or even less, if people can reach more than this speed on the earth, theoretically speaking, people can see what happened before, just like a movie rewind, but this kind of thing is impossible to happen, and it is impossible to do this on Earth. The truth of movement and the mystery of the universe are profound and difficult to understand, I hope you can watch this good science and education film The Universe and Man, which will give you more inspiration, and you will find the answer from it.

Purely handwritten, no copying).

According to the theory of relativity, the speed of any object will not exceed the speed of light, and approaching the speed of light will make the mass of the object close to infinity. However, in fact, phenomena exceeding the speed of light have been observed many times in experiments, and if these experiments are true, it shows that the theory of relativity still needs to be improved. This is a topic of cutting-edge science, and it is not easy to come to a correct conclusion at present.

Theoretically, go back in time and go back in time. Actually, I don't know if anyone knows, I don't know anyway.

People have known for a long time that the speed of light is very fast, and even speculated that the speed of light is infinite. Because of the speed of light, it was difficult for early physicists to accurately measure the speed of light. It wasn't until the advent of lasers that physicists were able to measure the speed of light with relative precision.

By 1983, the speed of light was directly defined as 299792458 meter second. According to Einstein's theory of relativity, this velocity is the ultimate velocity of the universe.

So why is the speed of light the upper limit of speed?

The mass of the electron is very low, only kilograms. According to the formula for calculating kinetic energy in Newtonian physics:

It can be calculated that an electron can be accelerated to the speed of light by giving more than joules (equivalent to one trillion billionths of a kilowatt-hour, or 256 kiloelectron volts). And if the energy increases, the electrons can be accelerated to a speed much faster than the speed of light. In this way, the speed of light is a breeze.

However, in any particle accelerator, even the most powerful Large Hadron Collider available today cannot accelerate the speed of electrons to the speed of light or faster. Previously, physicists used the Stanford Linear Accelerator (SLAC) to conduct experiments in which an electron reached the speed of light after being accelerated by meters. However, after further acceleration of kilometers, the speed of the electron is only 6 nines more than the decimal point, and it never reaches the speed of light.

As for the reason, Newtonian physics applies only to low-speed situations, and at sub-light speeds, only the theory of relativity is the theory that describes the facts. From the theory of relativity, the following kinetic energy expression can be derived:

It can be seen that even if the mass of the electron is as small as that of an electron, the kinetic energy of the electron will be infinitely large when the speed is infinitely close to the speed of light. Therefore, as long as there is a mass at rest (m0), it is impossible for the speed of light to reach the speed of light, which is the ultimate speed that can never be reached. Whereas, for objects without static mass, the speed of light is the only velocity.

As for the speed of light, the theory does not allow it.

To date, the fastest known sub-light speed was set by a mysterious OMG particle from the universe, which is equivalent to the speed of light and there are 15 nines in the middle....99951%。Although this speed is very close to the speed of light, it still does not reach the speed of light.

The speed of light is not only the fastest, but it is also consistent across all frames of reference (the principle of invariance of the speed of light). As a result, physicists defined 299792458 meter seconds, which is close to an exact measurement, as the speed of light, so that the parameters related to length can be measured without measurable changes in the previous parameters related to length, and how long a meter is.

Finally, it is important to note that there is a speed faster than light in the universe, and that is the speed at which space expands. But space is not matter and radiation, and there is no limit to the rate of expansion of itself.