Re: Simple question about light




"LuckyE" <D.Lucky.E@xxxxxxxxx> wrote in message
news:1166359441.989756.313360@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I was just wondering, if you'd send a 1 second light pulse at a space
ship moving away from you with half the speed of light. Would the space
ship still pick it up as a 1 second pulse, or would it be longer?

I'd guess longer since it'll also be shifted, but was just curious
since it'll still be coming at the speed of light towards the ship.

I have proposed doable experiments in the following link that are similar to
your proposed gedanken.
http://www.geocities.com/kn_seto/2005Experiment.pdf
My prediction of your gedanken is as follows:
The ship's clock will pick up a pulse length of (1/gamma - xv/c^2) seconds.

Ken Seto


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