1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Special Relativity Problem

  1. Jun 20, 2009 #1
    1. The problem statement, all variables and given/known data
    State two postulate that underlie the Special Theory of Relativity

    3. The attempt at a solution
    From the notes I have from the lecturer. It says:
    The principle of relativity: The laws of physics must be the same in all inertial reference frame.
    The constancy of the speed of light: the speed of light must be the same in all inertial frames, regardless of the velocity of the observer or the velocity of the source emitting the light.

    My question is:
    For the first statement, how do I use an example to explain this? Because I'm not too sure about "the law of physics" really means.
     
  2. jcsd
  3. Jun 20, 2009 #2

    LowlyPion

    User Avatar
    Homework Helper

  4. Jun 20, 2009 #3
    Can I say the physics law in any inertial frame is independent? So when I do an experiment (say measuring the mass of a sphere) on a inertial frame, will be the same as what I do in another inertial frame. Is that correct?
     
  5. Jun 20, 2009 #4

    LowlyPion

    User Avatar
    Homework Helper

    You have listed the two principles in your original post. If you are talking about independent of frame, then I suppose you can say your "laws" will be valid in one coordinate representation or another.

    The other important postulate is the invariance of the speed of c.
     
  6. Jun 20, 2009 #5
    So for example, one person is doing an experiment and obtained a result at stationary. Another person is traveling at a speed and do the same experiment. They will obtain the same results regardless the frame they are in. Is that a correct derivation from the first postulate?
     
  7. Jun 20, 2009 #6

    LowlyPion

    User Avatar
    Homework Helper

    I think as long as there is uniform translation between the frames.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Special Relativity Problem
Loading...