If you can fly at the speed of light for a second, how long has the world passed since you stopped?

If the speed of light stops for one second, the world does not exist. <>

In fact, such questions and assumptions are a paradox, because if there were really people who could achieve the speed of light and move, the world would not exist. This question relates to the special theory of relativity.

The effect of time dilation. <>

No object on earth, even a very fast moving object, can fly at the speed of light, and the fastest speed of an object that can be measured will have a limit, and if it can move at the speed of light, it is beyond the scope of physical cognition.

Once in a documentary, Stephen Hawking.

Once explained to the question of time. In this documentary, Stephen Hawking confesses that if all human beings were on a train, if the train could circle the earth 7 times in one second, then everyone on this train could achieve immortality. We don't know if this inference is true for the time being, but such a thing as a train circumnavigating the earth seven times in one second is simply not possible with the current level of technology.

So a person can travel at the speed of light, which is also impossible. And if it's extremely fast, you have to have other references.

Only when you travel at the speed of light cannot reflect the speed of speed, and when you measure time with other references, you will feel the expansion of time and feel that your time has slowed down.

This principle is an important principle in the special theory of relativity, and it can also be found in our lives. Therefore, if a person moves at the speed of light, the change of the world after one second is unknown, or the world will no longer be generated. Since the world no longer exists, it is impossible for human beings to exist as a part of the world, and such questions are contradictory.

At present, the speed of light is the fastest speed that humans have discovered that objects in nature are moving, but there is a prerequisite for being in a vacuum, so spaceships.

The speed of flight is expressed in terms of the speed of light. But it is impossible to produce such a speed of motion as the speed of light on Earth.

1 second. Because according to the theory of relativity, time can stand still when the speed of light is reached, so one second has passed in the world after one second of flight.

The speed of light is a unit of distance, not a unit of time, and the speed of light will be far away from the earth if it flies for one second.

The world would cease to exist. This is decided according to the principle of time dilation. When the speed of light stands still, any object will cease to exist.

Suppose a person follows the light of a supernova** towards the Earth at the speed of light, and after 100,000 years, the person reaches the Earth, according to the theory of relativity, using the Lorentz transformation, his own time has not passed, and the Earth time has passed 100,000 years. The universe does not stand still, it is only itself that is still.

His time stood still, not because he could see supernova explosions all the time, but because he was moving to the speed of light to make his own time stand still. His own feeling is, I just saw a supernova eruption, how did I get to Earth? Looking back with a telescope, the supernova is really exploding.

Of course, it is impossible to reach the speed of light, the closer an object with mass is to the speed of light, the more energy is required to accelerate again, it takes infinite energy to reach the speed of light, if the universe is a finite universe, the entire universe as energy is not enough for you to accelerate to the speed of light.

Can you guarantee that there is no faster-than-light thing?

So much light is flying, are we still?