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

I Average Luminousity measured by a moving body

  1. Feb 19, 2017 #1
    Lets suppose a radiating body moving relative to a frame. At a certain time because of relativistic beaming one observer in that frame would observe a different luminousity of the body. But observes placed at a different angle in that frame relative to the body would also observe different lluminousity. What is the average luminousity if we average all the observed luminousity of observes placed at different angle in that frame?
  2. jcsd
  3. Feb 19, 2017 #2


    User Avatar
    Science Advisor

    What do you think? There are a number of simple ways to deduce this.

    Hint: What is the answer in the case of non-relativistic motion? What changes at high relative speeds?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted