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Old 24-10-2008, 09:09 PM
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sjastro
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Quote:
Originally Posted by sheeny View Post
I'm not sure about this equation Sophie. It doesn't look like the time dilation formula I'm used to. See:

http://en.wikipedia.org/wiki/Time_dilation

But no matter... The faster something travels, the more it slows down. The limit of the formula as v approaches c is 0 (even though technically it is undefined, the limit provides some guidance on what to expect). So as Bert already replied, the photon doesn't experience time... it "experiences" going from start to finish instantly.



Al.
The time dilation formula is not a Lorentz transformation even though it contains the Lorentz contraction factor.

The formula quoted by Sophie has an x missing. (x is the distance travelled along the x axis).

It should read

't = (t - (v/csquared)x)/(square root of1 - vsquared/csquared)

As v approaches c, 't approaches infinity.

Regards

Steven
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