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From: jrm@wdl1.UUCP
Newsgroups: net.misc
Subject: A Question Regarding Black Holes
Message-ID: <641@wdl1.UUCP>
Date: Thu, 22-Aug-85 20:18:59 EDT
Article-I.D.: wdl1.641
Posted: Thu Aug 22 20:18:59 1985
Date-Received: Mon, 26-Aug-85 01:04:04 EDT
Sender: notes@wdl1.UUCP
Organization: Ford Aerospace, Western Development Laboratories
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Nf-ID: #N:wdl1:69900002:000:924
Nf-From: wdl1!jrm    Aug 22 15:16:00 1985


< Sacrifice to Line Gobbler God >


Having failed to receive a satisfactory answer to this from the gurus in 
net.physics and net.astro.expert, I am now posing the question to
net.bizarre:
>	By definition, the gravitational feild of a black hole is so
> intense that not even light or other wavicles with velocity c can escape.
> My understanding is that gravity propagates with velocity c. (I believe 
> this has been proven. Correct?) Does this not imply that, at least as
> far as the outside universe is concerned, the black hole has no 
> gravitational feild?
>	Further, since everything with velocity <=c is kept within
> the black hole, does this not mean that the black hole is undetectable?
> Even to the extent that you could pass through one or it could pass
> through you and neither would know anything had happened?
>	Does quantum mechanics affect this? (In terms of "things"
> escaping from the black hole.)