Thread: Twin paradox
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Oct10-08, 08:45 PM
Sci Advisor
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Quote Quote by Al68 View Post
Well if the ship is at rest with earth, they're in the same frame by definition. t=12.5 is simultaneous with the ship's clock reading 7.5 yrs after the ship comes to rest at the end of the trip.
You're not answering my question about other frames though--it's not like in relativity you're forced to only use frames that objects are at rest in, you can use any inertial frame you want! Are you agreeing that your method can only work in the frame where the Earth is at rest, that it can't be generalized to an inertial frame where the Earth is in motion?