The Shalimar Treaty

[douglas]

AngleWyrm_2 said:
If light is being emitted from a source at 3x10^8m/s and I travel away from that source at 1x10^8m/s, then do you believe that it will still approach me at 3x10^8m/s? What about the guy I pass along the way; does it approach him at 3x10^8m/s also?

It seems to me that the light will reach the guy I pass before it reaches me.

The stationary observer will indeed measure that the light's velocity relative to you is only 2x10^8m/s. For you, however, time will pass more slowly. When you measure the speed of light, you might come up with the same distance covered as the stationary guy measured, but your figure for the time will be lower. As a result, your measurement of light speed relative to yourself will come out exactly the same as the stationary observer's measurement of light speed relative to himself. Actually, your measurement of the distance will be somewhat off as well, but the net effect is that no matter what your speed, any attempt to measure the speed of light in a vacuum relative to yourself will always give the same result.