Does time stop when the speed of light is reached?

Time stops when the speed of light is reached, which is a corollary of the special theory of relativity, and the formula for time dilation in the special theory of relativity is shown in the figure. When v=c, people of the k0 system will consider the arbitrary time interval of the k system to be infinite, i.e., time has stopped.

First of all, we need to understand how time is measured!

The human body, or living organism, perceives time through the process of a series of chemical reactions triggered by the action of electromagnetic force. In other words, our ability to perceive time means that the chemical reactions in our body continue. The driving force of a chemical reaction is the movement of electrons.

As a result, if the electrons move at a slower rate, the chemical reaction rate will be slower, our metabolism will be slower, and our brain's calculations will be slower, and it will take two seconds to calculate things that would otherwise take one second. In this case, if our brain were to calculate one day, it would actually take two days. So living organisms essentially perceive time through the rate of electron movement.

Modern time measurement uses the electrons of cesium atoms to wrap around what I forgot, anyway, it takes one second to circle hundreds of millions of times. In other words, the rate of electron motion is used.

Next, it's Einstein's guess. If an object is moving, in other words, the nucleus is moving, then it will change its position, and at the same time the electrons will change their position and chase their nucleus. Low-speed motion is naturally easy for the electron to catch up with the nucleus, and the number of rotations around the nucleus per second varies so little that neither the atomic clock nor the living body can detect it.

When the speed of the nucleus is close to the speed of light, it is more difficult for the speed of the electrons to catch up with the nucleus. The velocity of the electron will have two sub-velocities, one is the chasing velocity and the other is the velocity around it. When the chasing speed is close to the speed of light, the orbital velocity will become slow, at this time, the time that the living body can perceive (determined by the orbital speed) will slow down, and when the object reaches the speed of light, the orbiting velocity will be 0, and the electrons will chase the nucleus as best they can.

At this point, the time of the atomic clock will stop completely, all chemical reactions in the living body will be suspended, and you will lose the ability to perceive time (as for whether people will die in this situation, I don't know).

So if there is no other definition of time, when the speed of light is reached, according to my reasoning, it will stop.

LZ is a little bit more difficult, how difficult it is to come up with such an easy-to-understand explanation and example for you

This is a matter of relativity, which is difficult to understand with macroscopic experience and intuition. To put it simply, time is not independent of space, and the speed of light is the limit of the speed of movement of matter. The speed of light does not change with the light source and the observer, an experimentally proven law of physics.

It is also the basis for the connection between space and time. Assuming that the observer is moving at nearly the speed of light, the stationary observer will find that his time is slow and almost stopped. Because it's close to the speed of light.

But for the athlete, the speed of light is the same, he has his own time, but much slower than the stationary one.

To put it simply, if he can flash through 300,000 kilometers of space per second, then his time will stop.

The specific mathematical relationships are expressed by the equations of the theory of relativity, and you can only understand them by studying physics.

Within the framework of the theory of relativity, when an object reaches the speed of light, it is mathematically untenable. Because in that formula (sorry, the formula forgot.) In theoretical physics, the difference between the velocity of an object and the speed of light is the denominator, so when the velocity of an object is the speed of light, the denominator is 0...

There is a general talk in college, and it seems to be this formula when I flip through the book.

t'=r(t-vx c2) forgot about ...... for two yearst is the time t of the stationary frame of reference'is the time of the frame of reference of the movement.

r (gamma) = 1 root number 1-b (beta) squared.

b (beta) = v c

Time is just a virtual concept, depending on what you measure time, if you measure it with a wall clock, time stops in weightlessness

Theoretically speaking, according to the theory of relativity, the faster the time, the slower the time, and the speed of light is the fastest known speed in nature, so beyond the speed of light can time go back to the past, but this regression is only a relative reverse, not a real physical degree of reversal, from the reality of returning to the past is not only a causal paradox, it is impossible to happen, and people are unable to withstand the speed of light, let's follow this site and take a look!

If it is theoretically possible to go back in time without considering other external factors, because according to the principle of time dilation in special relativity, the faster the speed, the slower time becomes, so when you get close to the speed of light, time will also become nearly stopped, then if you exceed the speed of light, according to this theory, time will go backwards, which has been mentioned in the simplest way of traveling.

But in fact, this kind of regression is only a relative regression, not a real physical reversal, because Einstein once assumed that when you run to the speed of light, the clock next to you begins to catch up with you, and then time seems to stop, so after really exceeding the speed of light, your body will not really cross, so the speed of light cannot really realize the function of going back to the past.

First of all, the speed of light is not at all something that the human body can bear, under the current scientific conditions, according to the theory of relativity, the faster the speed of the object itself will be the greater the mass itself, then when infinitely close to the speed of light, the mass of the object will become infinite, and there is currently no kind of object that can withstand such a mass, so in the case of faster than the speed of light, it may be torn to pieces in an instant.

According to the classic grandfather paradox in banana peel theory, if a person travels back in time and kills his maternal grandfather, then he also disappears, but he disappears, and who killed his maternal grandfather? This is obviously a paradox, so once the past changes, history collapses, cause and effect contradict each other, so the time travel can only go to the future, not the past.

Even if you travel back in time faster than light, you just watched a replay of your life, and you can't make any substantial changes, of course, some people propose parallel universes.

The paradox of time is solved, but the change of the other world will not have an impact on your own world, and it will not help.

In general, it is theoretically possible to go back to the past beyond the speed of light, but with our current science and technology, it is not possible to go beyond the speed of light, and going back to the past is also contrary to the causal feint.

However, according to the mass increase effect in the special theory of relativity, the mass of an object with a resting mass will increase rapidly in the process of approaching the speed of lightThe closer you get to the speed of light, the greater the mass of the object itself, and the mass of the object becomes infinite before the speed of light is reached. In the case of infinite mass, if you want to get closer to the speed of light, you need infinite energy to drive, but it is obvious that there is no infinite energy in the universe, so reaching the speed of light is impossible in the first place, and the speed of light is even more hopeless, but this does not mean that it is impossible to go back to the past.

Time was formed and existed from the beginning of the universe, so there was no concept of time before the universe was large. In Einstein's narrow relativity,He believed that there was an inverse relationship between the speed of the passage of time and the speed of matter in motion. That is to say:

The faster the matter moves, the slower the passage of time on that matter. In the eyes of humans, the limit of speed is the speed of light.

Similarly, according to the way humans calculate time, the speed of light is 300,000 kilometers per second, and when light comes from the sun to the earth, it takes about 8 minutes. But from the point of view of light, it only took a moment to reach the earth, which is a relative concept. Therefore, it is generally believed that when matter moves at the speed of light, time comes to a standstill and is no longer pushed forward.

Since time tends to come to rest as the speed approaches the speed of light, does this mean that time stands still when the speed reaches the speed of light? And when the speed exceeds the speed of light, time begins to pass backwards? In fact, the special theory of relativity suggests that there is no light-speed frame of reference in the universeAs long as it is a matter with static mass, it is impossible to reach or even exceed the speed of light.

That is, the inferences of time stillness and time reversal are both wrong.

Or it can be intuitively seen from the formula of the clock slow effect that when the velocity is equal to the speed of light, the denominator of the Lorentz factor (1 (1-v 2 c 2)) becomes 0 and the expression becomes meaningless. And when the velocity exceeds the speed of light, the Lorentz factor is negative in the denominator root number. Although this can be mathematically represented as imaginary numbers, it does not make any sense in physics, there is no time with imaginary terms.

According to the current theory, not only does the speed of light not turn back time, but such a thing as time passing backwards cannot happen in itself.

The speed of light is 300,000 kilometers per second, and it is a hypothesis that time will stand still when the speed of light is reached, and when the speed of light is exceeded, time will flow backwardsNo one can prove it, at least now, that Einstein's theory of relativity tells us that nothing can exceed the speed of light, so if you want to turn back time by speed, it's impossible. In his mass-energy formula (e=mc2), it can be shown that if an object is to reach the speed of light, its mass must approach infinitesimal size, but such an object does not exist in the universe.

Perhaps, according to some theories, if the speed of light is exceeded, there will be some phenomena of regression, but there are no conditions for some research now.

Yes. Because according to Einstein's theory, going faster than the speed of light would turn back time, but that's just a theory.

I don't think time can be reversed if you exceed the speed of light, but time can stand still, like reaching the speed of light.

I heard that the universe is expanding at ...... speed of light