Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.ARPA Path: utzoo!linus!decvax!ucbvax!rimey From: rimey@ucbvax.ARPA (Ken Rimey) Newsgroups: net.physics Subject: Re: A Queation Regarding Black Holes Message-ID: <9818@ucbvax.ARPA> Date: Sat, 10-Aug-85 11:55:53 EDT Article-I.D.: ucbvax.9818 Posted: Sat Aug 10 11:55:53 1985 Date-Received: Mon, 12-Aug-85 06:21:09 EDT References: <625@wdl1.UUCP> Reply-To: rimey@ucbvax.UUCP (Ken Rimey) Organization: University of California at Berkeley Lines: 31 In article <625@wdl1.UUCP> jrm@wdl1.UUCP writes: > By definition, the gravitational feild of a black hole is so > intense that not even light or other wavicles with velocity c can escape. Yes. By the way, quantum mechanics is not relevant to black holes unless they are very very tiny. Also, "wavicle" is not a real physics term. Say "particle". > My understanding is that gravity propagates with velocity c. (I believe > this has been proven. Correct?) Gravity waves propagate with velocity c. Yes. > Does this not imply that, at least as > far as the outside universe is concerned, the black hole has no > gravitational feild? No. > 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? > ..... > jrm@ford-wdl1 No. Matter cannot escape, but matter outside is certainly affected by the black hole's gravitational field. Ken Rimey