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Old 4th July 2012, 03:41 PM   #145
Vorpal
Extrapolate!
 
Join Date: Jan 2005
Posts: 1,104
Originally Posted by RecoveringYuppy View Post
If you define density for a black hole as mass divided by volume enclosed by the event horizon then black holes have finite density. And they can come in a very wide variety of densities, including as low density as hydrogen gas here on Earth if they are very large black holes.
Very large black holes have effectively infinite volumes. A completely classical (nonevaporating) black hole has infinite spatial volume.
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