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Ticking watch

  1. May 6, 2010 #1
    They say that when you go faster in space your watch would tick slower. How can the watch tick slower when the watch has a constant ticking rate determined by the gearratio?

    (I do understand that the rate of time decreases as the velocity increases)
  2. jcsd
  3. May 6, 2010 #2
    It is ticking slower relative to a still observer
    Relative to you (as it is on your hand) the tick rate is the same of course.
  4. May 6, 2010 #3


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    Gold Member

    As Dmitry has said, these effects are dependent on relative velocity. There is no absolute velocity so you must say with respect to whom you are moving.
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