Makes me think of one my old physics master said to us...(sorry, diverging from the original thread somewhat..)
If you're in a space craft (theoretically) travelling JUST under the speed of light, and you run from the back to the front of the spacecraft (enough to make up the difference from space craft speed to the speed of light), are you then travelling at the speed of light? What then happens if, while you are still running, the rocket accelerates to a speed GREATER than the speed of light....?
tKF
Last edited by TheKentishFledgling; 6th Feb 2006 at 22:09.