Entropy and Hawking radiation

  • #1
1,316
104
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
https://en.wikipedia.org/wiki/Entropy
Entropy.JPG

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.
 

Answers and Replies

  • #2
BiGyElLoWhAt
Gold Member
1,573
118
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.
 
  • #3
1,316
104
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.
Joule per temperature, ...? Ok, I'll try to imagine it. Thanks.
 

Related Threads on Entropy and Hawking radiation

  • Last Post
Replies
1
Views
709
  • Last Post
Replies
4
Views
3K
Replies
2
Views
1K
  • Last Post
Replies
15
Views
6K
  • Last Post
Replies
4
Views
845
  • Last Post
Replies
4
Views
762
  • Last Post
Replies
7
Views
1K
  • Last Post
Replies
12
Views
1K
Replies
1
Views
1K
Replies
1
Views
2K
Top