How does going faster than light makes you travel back in time?

[Angelhoney]

So why does traveling faster than the speed if light send you back in time?

 

[Einstein]

No one has ever verified that. It's just made up fiction.

 

[Ilian Amadeus]

So why does traveling faster than the speed if light send you back in time?

Relativity is the reason why, as an object with mass aprroaches the speed of light time slows down for thats mass whilst everything thing around it speeds up through time. When an object then reaches the speed of light it no longer is subject to time, surpassing the speed of light then allows that object to go back. In simpler words approaching the speed of light would take you to the future, passing it would take you back. Moving at different speeds affects the rate of change of an object.

 

[Ilian Amadeus]

Time is rate of change. Gravity slows the rate of change of anything, and that is why it can affect time. Moving at different speeds also changes the rate of change of an object. This is why light does not age because of how fast it is moving. Time and space are the same thing, what you do to space will affect time.

 

[Martian]

So why does traveling faster than the speed if light send you back in time?

Relativity is the reason why, as an object with mass aprroaches the speed of light time slows down for thats mass whilst everything thing around it speeds up through time. When an object then reaches the speed of light it no longer is subject to time, surpassing the speed of light then allows that object to go back. In simpler words approaching the speed of light would take you to the future, passing it would take you back. Moving at different speeds affects the rate of change of an object.

There's a problem with using relativity for predicting how to travel back in time. The equation for time dilation is:

t = t0 / √(1 - (v/c)²)

However, when v > c, t becomes imaginary. We don't have a definition for imaginary or complex time, so this simply means that the equations of relativity are not valid outside the range of velocities 0 < v < c.

It was once thought that supersonic flight was impossible for the exact same reason. The drag on an aircraft in the transonic region is also proportional to 1 / √(1 - (v/a)²), where a is the speed of sound.

 

[Ilian Amadeus]

So why does traveling faster than the speed if light send you back in time?

Relativity is the reason why, as an object with mass aprroaches the speed of light time slows down for thats mass whilst everything thing around it speeds up through time. When an object then reaches the speed of light it no longer is subject to time, surpassing the speed of light then allows that object to go back. In simpler words approaching the speed of light would take you to the future, passing it would take you back. Moving at different speeds affects the rate of change of an object.

There's a problem with using relativity for predicting how to travel back in time. The equation for time dilation is:

t = t0 / √(1 - (v/c)²)

However, when v > c, t becomes imaginary. We don't have a definition for imaginary or complex time, so this simply means that the equations of relativity are not valid outside the range of velocities 0 < v < c.

It was once thought that supersonic flight was impossible for the exact same reason. The drag on an aircraft in the transonic region is also proportional to 1 / √(1 - (v/a)²), where a is the speed of sound.

The idea of traveling back in time by surpassing the speed of light is one idea, and the reason why it was proposed is because of how time changes when approaching high speeds. Thanks for clearing the reasons why it may or not be wrong.

 

[Martian]

Relativity is the reason why, as an object with mass aprroaches the speed of light time slows down for thats mass whilst everything thing around it speeds up through time. When an object then reaches the speed of light it no longer is subject to time, surpassing the speed of light then allows that object to go back. In simpler words approaching the speed of light would take you to the future, passing it would take you back. Moving at different speeds affects the rate of change of an object.

There's a problem with using relativity for predicting how to travel back in time. The equation for time dilation is:

t = t0 / √(1 - (v/c)²)

However, when v > c, t becomes imaginary. We don't have a definition for imaginary or complex time, so this simply means that the equations of relativity are not valid outside the range of velocities 0 < v < c.

It was once thought that supersonic flight was impossible for the exact same reason. The drag on an aircraft in the transonic region is also proportional to 1 / √(1 - (v/a)²), where a is the speed of sound.

The idea of traveling back in time by surpassing the speed of light is one idea, and the reason why it was proposed is because of how time changes when approaching high speeds. Thanks for clearing the reasons why it may or not be wrong.

There's a little more to it than that. Suppose a supersonic jet flies past playing music. You would hear it in reverse. People have supposed that the same would happen with light. And since the standard model says that the electromagnetic force is mediated by photons, one could assume that such forces would also happen in reverse. I'm curious about the strong, weak, & gravitational forces though. Even so, the equations we have are insufficient. Relativity is a century old. I'd be interested in hearing your views on this. I might be wrong.

 

[timecore]

I did not know that.That is interesting.

 

[PaulaJedi]

So why does traveling faster than the speed if light send you back in time?

It takes a long time for light to reach us. So, every planet and star you see in the sky could be already gone, but the light hasn't reached us yet to let us know. So, the theory is that if you go in the opposite direction of that light and faster than the light can travel, you can experience time before those planets, maybe the big bang. We don't know if there has been any verification, as user Einstein has said. If it has been verified, it is well hidden. Besides, I personally believe there are other ways to time travel besides physically going faster than light. For one thing, wouldn't the G's kills us and rip your vehicle apart? Perhaps a particle's speed is more important than US going fast. Who knows.

 

[Harte]

I did not know that.That is interesting.

It would be even more interesting if it were true.

Light speed is the escape velocity of the universe. Hit it, and you aren't here anymore.

You won't return in some earlier time. Theory is you will never return.

Harte