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

Can red shift compare which clock go faster?

  1. Dec 27, 2005 #1
    We often say, an observer near the horizon of a BH finds the light travelling from far outside the horizon blue shifted, or an observer away from the BH finds the red shift of light from near the horizon. We get a conclusion that a clock near the horizon goes faster than a clocker far outside the horizon.

    But can red shift alone determine the time rate? As we know, in special relatity, when two men move toward each other, one finds blue shift of light from the other, but he also finds the clock of the other observer slower, not faster.

    best regards.
    Thank you :)
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted

Similar Discussions: Can red shift compare which clock go faster?
  1. Red shift Blue shift (Replies: 6)

  2. Red shift or blue shift? (Replies: 16)