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C constant to the observer as well?

  1. Jul 4, 2005 #1
    Stupid Question:

    SR says that c is constant in which ever I-FRAME its in right?
    now does that include an observer looking into the system? that they would also measure c? or would they measure c+vFrame?

    Also Does this have anything to do with the "index of refraction" between mediums where f is constant and lambda changes?
  2. jcsd
  3. Jul 4, 2005 #2


    User Avatar

    Special Relativity says the speed of light, c, is constant to every observer in every inertial reference frame. An inertial reference frame is a frame that does not accelerate.

    Only if this observer is moving at a constant velocity to the frame in which your "system" is in.

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