- #1
guss
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I'm not sure if this is the right forum for this, sorry if it isn't.
I was presented with the idea that to travel in time, we could make a train track around Earth. On the track, there would be a train that traveled at 99.999% of the speed of light and would travel in time.
A girl gets up on the train, and starts running in the same direction of the train. However, she cannot break light speed because time on the train slows down. But this made me confused (obviously the train and the girl running forward are completely hypothetical and the girl is just used as an example).
How would the girl break light speed, or add to the speed of the train, because wouldn't she be traveling relative to the train, and not relative to Earth?
If this is not the case, then how is the speed of light measured, because the planet is orbiting around the sun, and the sun obviously has some movement, etc.
Can anyone explain this to me?
I was presented with the idea that to travel in time, we could make a train track around Earth. On the track, there would be a train that traveled at 99.999% of the speed of light and would travel in time.
A girl gets up on the train, and starts running in the same direction of the train. However, she cannot break light speed because time on the train slows down. But this made me confused (obviously the train and the girl running forward are completely hypothetical and the girl is just used as an example).
How would the girl break light speed, or add to the speed of the train, because wouldn't she be traveling relative to the train, and not relative to Earth?
If this is not the case, then how is the speed of light measured, because the planet is orbiting around the sun, and the sun obviously has some movement, etc.
Can anyone explain this to me?