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

B Entropy and Hawking radiation

  1. Apr 12, 2016 #1
    Dear PF Forum,
    I'm trying to make sense about Hawking radiation in Black Hole. And that leads me into entropy.
    I read this equation in
    What does that mean?
    S is the change of Entropy
    What does Qrev mean there?
    Is it in Calorie? then Joule?
    T, I think is in Kelvin.
  2. jcsd
  3. Apr 13, 2016 #2


    User Avatar
    Gold Member

    Q_rev is the heating change for a reversible process. Googling "units of entropy" returns J/K, so I'm gonna say it's in Joules. T, being the absolute temperature, has to be in kelvin.
  4. Apr 13, 2016 #3
    Joule per temperature, ...? Ok, I'll try to imagine it. Thanks.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Entropy and Hawking radiation
  1. Hawking radiation (Replies: 1)