Darren New <dne### [at] sanrrcom> wrote:
> http://listverse.com/2010/11/04/10-strange-things-about-the-universe/

  There seems to be an error or discrepancy with the description of the
Kerr black hole in that page. The image shows the Kerr black hole having
three surfaces: The ergosphere, the outer event horizon and the inner
event horizon. The text also talks about these three.

  However, if you look at the wikipedia article:

http://en.wikipedia.org/wiki/Kerr_metric#Important_surfaces

there are only two surfaces: The ergosphere and the event horizon. What
the article at listverse.com calls "outer event horizon" seems to actually
be the ergosphere, and the description seems to confirm that. It seems
that (assuming the wikipedia article is accurate) the author thought
that the ergosphere and the "outer horizon" are two different surfaces,
rather than just being two names for the same thing.

-- 
                                                          - Warp

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