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Old 20-07-2010, 11:17 PM
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sjastro
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Quote:
Originally Posted by SkyViking View Post
I thought so too at first, but that would mean less fuel is consumed the faster the train goes... surely not?
In the train's frame of reference you are using proper time, not Earth's frame of reference which is time dilated. Since proper time runs faster then the time in the Earth's frame of reference this accounts for the length contraction in the train's frame of reference (as distance= velocity X proper time).

You are adding fuel based on proper time not on Earth's dilated time.

Regards

Steven
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