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From: bill@utastro.UUCP (William H. Jefferys)
Newsgroups: net.physics
Subject: Re: Re: "big bang" a big bust?
Message-ID: <875@utastro.UUCP>
Date: Wed, 5-Dec-84 10:00:40 EST
Article-I.D.: utastro.875
Posted: Wed Dec  5 10:00:40 1984
Date-Received: Fri, 7-Dec-84 05:51:36 EST
References: <127@sdcc12.UUCP>, <17266@lanl.ARPA>
Organization: UTexas Astronomy Dept., Austin, Texas
Lines: 18

> Light can't escape from within a black hole, but information can.
> 
> Two pieces of information escape from a black hole - its mass and angular
> momentum.

In fact, a Black Hole is the perfect destroyer of information.  That
is the point of John Wheeler's comment "A Black Hole Has No Hair",
that is, once things are thrown into the black hole, we lose all
information about them.  One of the results of modern relativity
theory is the deep connection between black holes and Thermodynamics,
as worked out by Hawking, Beckenstein and others.

-- 
"When evolution is outlawed, only outlaws will evolve"
	Bill Jefferys  8-%
	Astronomy Dept, University of Texas, Austin TX 78712   (USnail)
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