If you fly at the speed of light for 10 seconds and then fly back to Earth, will you still be able t

If that happens, he won't be able to see his loved ones again. With the advent of the famous physicist Albert Einstein and his "theory of relativity" in the last century, human society realized for the first time how magical and "omnipotent" the "speed of light" is.

In Newton's absolute view of space-time, any velocity is limited with respect to space; However, Einstein demonstrated that "speed" has reached a certain limit that allows space-time to be converted into each other. In other words, at the speed of light, we may be able to achieve such a feat as "interstellar".

Someone once put forward the idea that if we flew ten seconds at the speed of light and broke through the earth; Then we flew back at the same speed, and it took a total of twenty seconds for us; But will we still be able to see our loved ones? In other words, is the Earth still the way it was before we set out?

That's a very interesting question. In fact, Einstein once explained a "shrinkage effect" during his lifetime. When a person runs in circles at the speed of light, the clock in his hand turns, and it is infinitely close to stagnation.

In other words, all time is relative. If you move at the speed of light, then the space-time near you will expand to an infinite extent under the influence of the Lorentz Change, and time will almost stop for you; But the flow of time in the outside world remains the same.

In other words, if the above happens, when we return to Earth, we may have spent thousands of years in human society. Of course, this is just a statement. In physics, this situation is called the "Getwin Fallacy".

Some scholars believe that this is not the case. Because, we move at the speed of light; If the man on the ground is using us as a frame of reference, then he is also moving at the speed of light. Let's think carefully about whether this is the truth.

At that time, the structure of the entire universe will change, because, according to the "qualitative increase effect", human beings cannot break the speed of light. Perhaps, all objects will become the speed of light in an instant, and the three-dimensional world will become a four-dimensional world.

OK. Because time is relatively stopped at the speed of light, so when you fly back to Earth, you can still see your loved ones, and they have not changed.

No, because no one can withstand the speed of light, and when they do it, they are torn to pieces by friction.

It is estimated that it is not visible, this is the problem of time and space, as long as it reaches a certain speed, people will enter another space-time hole, so that even if they return to the earth, it is estimated that it is not that era, and they may not be able to see their relatives.

I can see it. If you use earth time to calculate the flight time, flying back and forth at the speed of light is 20 seconds, and you can still see your loved ones.

It may seem like only two minutes in most people's eyes, but Einstein told you that the truth may not be that simple. We have the impression that the passage of time is the same for everyone, at least all of us who live on Earth, we all experience the same passage of time, whether you are poor or richThe passage of time is fair for everyone.

Since it is the time of the spacecraft, according to the formula of the time dilation effect of the special theory of relativity (due to the process of acceleration, deceleration and U-turn of the spacecraft, the time experienced by the spacecraft is really slower than that of the Earth,where t is the time of the earth, t is the time of the spacecraft, here is 1 minute, is the speed of the spacecraft relative to the earth, c is the speed of light).

When Einstein proposed the special theory of relativity, he had two basic assumptionsOne of them is the well-known principle of invariance of the speed of light, which states that the speed of light propagation in a vacuum will be maintained at a constant value in all inertial frames of reference.

What it expresses is the correspondence between the elapsed velocities of time in two inertial frames of reference, whether from the observer or from the person on the speed-of-light spacecraft, in which they themselves are seated in the inertial frame of referenceThey are two separate processes.

If there is no information connection between them, then the person on the spaceship is seen from the Earth, It feels that time on the spaceship is slow or even stagnant, then the reverse is true, the earth is also moving at the speed of light relative to the spaceship, then the people on the spaceship at the speed of light look at the people on the earth, and they also feel that their time is slow or even stagnant.

One minute here should refer to the spacecraft time, that is, the time felt by the pilot, and since the speed of the spacecraft is very close to the speed of light, the special relativity effect will be very obviousAs a result, a minute passed in the spacecraft, and when it returned to Earth, it was found that hundreds of years had passed on Earth, but tens of thousands of years.

Based on the speed of light in a vacuum, the velocity is the same in any inertial frame of reference, as well as the principle of special relativity, we can get a theory that distinguishes it from Newton's view of space, where time and space are no longer independent, and this theory is called special relativity.

Special relativity is well-known for several inferences, such as the mass-energy equation and the clock-slow-ruler effect that will be mentioned in this answer. The so-called clock slow ruler shrinks,In a nutshell, the time of a moving object slows down and the length in the direction of motion decreases.

Infinity means that one minute has passed on Earth, and hundreds of millions, trillions of minutes have passed on a spaceship. This time will be infinitely larger as the ship approaches the speed of light infinitely. When the spacecraft's time is infinitely close to infinity, the photon clock A will tend to be stationary, which is what we call time freeze.

The photon will always be at rest in the photon clock, and everything inside the ship will be stationaryIn other words, when Xiaomei is almost at the speed of light, the earth is destroyed, and even the universe is destroyed with the flick of her fingers, she will see the end of the evolution of the universe, let alone look back at her relatives on the earth that have been destroyed.

Let's talk about a day. The spaceship flew back after a day, and the earth has only passed for a day, and the people on the earth yesterday are naturally still there today. Whether the spaceship climbs at the speed of a snail for a day or flies at the speed of light for a day, it has nothing to do with the Earth.

…The spacecraft mentions that the speed of light is near, and the kinetic energy of the spacecraft is infinite, which is an increase in frequency and energy field. As a result, time has slowed down, from 12 frames per second to 10 frames per day. At the same time, it brings an increase in the frequency of your body, and the speed at which you parse frames also increases with the increase in frequency, the amount of resolution you used to have in a day, now it is completed in one second, if your body can not explode, in fact, the feeling of time or cognition, addition and subtraction, is similar to before.

Earthlings look outside, and you're in the speed of light for a day. At the speed of light, you feel hundreds of years. ......So, when the spaceship opens, it's not that you won't see your family, but that your family will see an old man, or even a mummy that has been dead for hundreds of years, provided that you are not torn apart by the frequency.

No. Because of the speed of light, time in the spacecraft is static, so if you travel at the speed of light for one minute, you may not be able to see your family after returning to Earth.

When you return to Earth, you will most likely not see your family, because scientists have shown that one minute represents 100 years.

Flying at the speed of light, of course you can see your family when you come back in a minute, I just hope you can recognize it then, because maybe your eyes are glazed.

Time stands still in the speed of light, and time in it doesn't have the meaning of a minute, so you can see your family.

If it is a minute on the earth, it is fine, but if it is a minute back on the spacecraft, it is already a vicissitude, because according to Einstein's general theory of relativity, the faster the speed of the object, the slower the flow of time, when you can reach very close to the speed of light, your time flow speed is almost stationary for people on the earth.

Flying at the speed of light for 180,000,000 kilometers in one minute, it is impossible to see your family when you return, unless you are a cheetah that will not get tired.

According to Lao Ai's theory, time stops after reaching the speed of light, and you won't experience even a second more, sorry, you're frozen in the universe!