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ericqb
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There is a thought experiment pertaining to general relativity that involves a signal traveling from the front to the back of an accelerating space ship, if I remember correctly. I'm sorry for being so vague, but this is something I saw browsing in a library years ago, and I really wanted to think about it, but it slipped out of my mind and now I'm not sure how it goes. I believe that astronaut 1 in the front of the ship sends a pulse of light towards astronaut 2 in the back of the ship. The question is, I believe, how does the transit of this pulse compare to the same pulse in a ship that is moving at a constant velocity instead of accelerating. I'm not sure how much of this I have right but there is a thought experiment with a signal involving two astronauts in the front and back of a spaceship that is accelerating. Can someone lead me to this thought experiment and a discussion? Thank you so much. Sorry for the vagueness. ericqb