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seen Jan 21 '13 at 21:07

Jul
1
comment How to calculate time dilation in approaching speed of light
Ah, I see. So I would calculate how long it would take to travel for example 100 000 ly in 0.9c m/s, ignoring relativity, and use it as t_0 (i.e. what it looks like to the "twin" left on Earth)?
Jul
1
comment How to calculate time dilation in approaching speed of light
@Argus Yes, I meant the pilot would experience the traveling going much quicker when he gets back.
Jul
1
comment How to calculate speed difference between objects close to the speed of light?
Thanks Bill Wheaton, good to know.
Jul
1
comment How to calculate speed difference between objects close to the speed of light?
Thank you Alfred Centauri, your answer helped a lot!
Jul
1
comment How to calculate speed difference between objects close to the speed of light?
@Argus Ah, yes, I meant the total speed of the rockets closing in, not the difference of speed. Thanks for pointing that out.
Jul
1
asked How to calculate time dilation in approaching speed of light
Jun
30
asked How to calculate speed difference between objects close to the speed of light?