1. Not finding help here? Sign up for a free 30min 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!

Number of photons to make a black hole

  1. Feb 1, 2009 #1
    1. The problem statement, all variables and given/known data

    By setting the total energy of photons to Mc^2, estimate the maximum number of photons that could be used to make a black hole of mass M.

    This is a thermal physics problem, in case anyone needs a context; we're discussing the entropy of a black hole.

    2. Relevant equations

    I'm given the entropy for a black hole. I also know the Schwarzschild radius.

    3. The attempt at a solution

    I'm just having trouble seeing where to start. Probably this is something very basic and I'm just missing it. Can someone just help me to start?
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?



Similar Discussions: Number of photons to make a black hole
  1. Hole orbits (Replies: 0)

Loading...