If you reach the speed of light, time stops, why is there such a saying?

In our nature, the maximum speed at which an object moves is still the speed of light so far, as we all know. While quantum entanglement is theoretically faster than the speed of light, it is only a theory after all. Being the fastest velocity in the universe, it is impossible for all mass objects to reach the speed of light because the mass of the object increases with velocity.

Only photons with a static mass of 0 can always move at the speed of light, and they always maintain a constant velocity and cannot overlap with any velocity. Theoretically, humans cannot reach the speed of light, but the universe is full of mysteries. Perhaps these scientific ideas will be broken in the future where science and technology are more developed.

What would happen if humans could reach the speed of light?

In Einstein's special theory of relativity, there is a theory: the faster an object moves through space, the slower it passes. In this way, if the velocity reaches the speed of light, the time will be 0, which means the time acting on the object at the speed of light will stop.

If the speed exceeds the speed of light, time will flow backwards.

Of course, time reversal does not seem to be reliable, but it should stop part of the time acting on a tachyon object. For example, it should be possible to catch up with the image of the earth in the past and see the earth in the past, which should be possible, but it can only see the things of the past, but it cannot participate.

Velocity can slow down time, but the faster the speed, the longer it will take for the object to be compressed. If a person reaches the speed of light, time will be infinitely long relative to himself, his length will be infinitely small, it is not personal. There is also a theory that when a person's speed exceeds the speed of light, he becomes nothingness in the eyes of others, and he will enter a higher latitude space, which may be a parallel world to the past or a parallel world to the future.

It may be that the speed of light is really very fast, and when it reaches absolute speed, it becomes relatively stationary.

I don't think it will necessarily stop, but there may be other changes, and I don't know.

Because if you reach the speed of light, time doesn't actually work on you.

It's absolute speed, because the speed of light is about the same as time.

Time will stand still close to the speed of light: The theory of relativity has never been used to explain the faster-than-light case, because time becomes an imaginary number. To explain that time almost stops approaching the speed of light, we must first accept that the speed of light is absolute, and that the speed of light remains the same no matter how the object moves.

When the speed reaches the speed of light, then the energy usage is huge, and your mass becomes very large, which is the e c square, and then at that time, even time cannot continue to pass, and when you fly at the speed of light, time cannot be captured, so time stops.

Theory. All matter has latent energy in which mass is multiplied by the square of the speed of light. The entire energy of a resting object is contained in the mass at rest.

Once in motion, kinetic energy is generated. Since mass and energy are equivalent, the energy present in motion should be added to the mass, that is, the mass of the moving object increases. When the speed of motion of the object is much lower than the speed of light, the increase in mass is negligible, such as when the speed reaches 10% of the speed of light, the mass only increases.

But as the speed approaches the speed of light, the increased mass becomes significant.

We receive external visual signals through light, light is a medium, when you travel at the speed of light, of course, time is stationary, relatively speaking, more than the speed of light, then you can exceed the propagation of light Seeing the previous things is time rewind, things are always relative, not really time rewind. At the same time, this is the concept of time and space. Albert Einstein famously had a formula: e = mc square, e is energy, c is the speed of light, and this is the principle of relativity. When you get to the speed of light, then the energy usage is huge, and your mass becomes very large, which is the e c square, so at that time, even time can't go on, that is, when you fly at the speed of light, time can't catch you, so time stops. There was an experiment where you put a clock at the bottom and the top of a tower The clock at the bottom of the clock moves faster, and this has to do with the Earth's self-rotating centricity, and the higher it is, the greater the linear velocity, the closer it is to the speed of light, so the slower time passes, and when it reaches the speed of light, time comes to a standstill.

We receive external visual signals through light, light is a medium, when you travel at the speed of light, of course, time is stationary, relatively speaking, more than the speed of light, then you can exceed the propagation of light Seeing the previous things is time rewind, things are always relative, not really time rewind. At the same time, this is the concept of time and space.

Albert Einstein once famously had a formula: e=mc square.

e is energy and c is the speed of light.

In other words, when you're flying at the speed of light, time can't catch you, so time stops, and there was an experiment where you put a clock at the bottom and the top of a tower, and the clock at the bottom of the tower passes faster, and this has to do with the Earth's self-turning centricity. The higher the place, the greater the linear velocity, the closer it is to the speed of light, so the slower time passes, and when you reach the speed of light, time stops.

Albert Einstein: Humans can never exceed the speed of light, so why does time stand still when the speed of light is reached?

At one point, scientists studied the possibility of transcending the speed of light, fantasizing about one day being able to build rockets that move faster than the speed of light. In this way, people can catch up with the light signals emitted on the earth by simply riding this rocket and thus see what happened on the earth in the past. This means that at the speed of light, time will be reversed, and people will pass tomorrow, today, and then yesterday.

In other words, a person becomes an old man first, then a young man, a teenager, and then a baby. This phenomenon is unimaginable for people living in our physical world.

As you know, if a missile is launched at the speed of a jet fighter flying at the speed of sound, and its speed relative to the aircraft is also comparable to the speed of light, then, in the eyes of people on the ground, the missile will fly forward at twice the speed of sound. This is a conclusion based on the synthetic formula of the velocity of classical physics. But if a beam of light is fired at a rocket traveling at the speed of light, will that light travel forward twice the speed of light for an observer on Earth?

This question was a headache for scientists at one time. It was not until the end of the last century, when American scientists Michael Sun and Morey collaborated on a famous experiment that gave a largely clear answer to this question. They confirmed such an important conclusion:

The speed of light in a vacuum never changes, regardless of the observation system in which it is measured, and whether or not the light source emitting the speed of light is in motion. This shows that the speed of light is the "absolute champion" of nature as we know it today, and it is the limit of movement. Therefore, time is never turned back.

In fact, sometimes the explanation is very simple, in space physics, space and time are closely related. I'll give you an example, and you'll probably understand why. Take sunlight as an example, because it takes 8 minutes and 23 seconds for sunlight to reach the Earth, in other words, the sun you see is always the same as the sun 8 minutes and 23 seconds ago.

Light travels at the speed of light, so in space physics, distance is sometimes expressed in terms of time, such as light years that you are familiar with. A light-year is a distance of light that has one year. There is both time and space in it.

All that's left is to solve the problem of exceeding the speed of light. You should draw a timeline, you are standing at this point, the sun is 8 minutes and 23 seconds ago, if it exceeds the speed of light, then you are not seeing the sun 8 minutes and 23 seconds ago? So if you exceed the speed of light, time will go backwards.

In general relativity, it is not allowed to exceed the speed of light.

The eye sees things through the reflection of light, if the speed is the same as the light, the reflection to our eyes is of course static, in the same way, more than the speed of light, the reflection speed of the eye can not keep up, then it is not regressive. But these are all speculations, things that have not yet reached the speed of light in reality.