Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Suppose relative v in S <> -v in S'

  1. Aug 26, 2009 #1
    If S' moves with velocity v in S, then SRT requires S to move with velocity -v in S'. What happens if this isn't true? the limiting velocity c would no longer be an invariant is an obvious consequence, what else?

    Thanks.
     
  2. jcsd
  3. Aug 27, 2009 #2

    CompuChip

    User Avatar
    Science Advisor
    Homework Helper

    Well, it would mean that physics would become observer-dependent. If we were both in spaceships in empty space, for example, we would be able to devise an experiment which told us who of us was in S, and who was in S'. In other words, who is in absolute motion.

    If you even think about particle physics (for example accelerating particles in a laboratory, or particles crashing towards the earth at high velocities) you would hopefully see why this is highly undesirable.
     
  4. Aug 27, 2009 #3
    The limiting velocity of particles would be frame dependent, meaning even the physics of mechanics was frame dependent. Even though extremely unlikely, I can't think of any experiment which rules this out unambiguously.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Suppose relative v in S <> -v in S'
  1. 1 s (Replies: 7)

Loading...