Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/3/84; site enmasse.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!harvard!talcott!panda!enmasse!frankr From: frankr@enmasse.UUCP (Franklin Reynolds) Newsgroups: net.books,net.sf-lovers,net.physics Subject: Re: Procyon's Promise & antimatter black holes Message-ID: <447@enmasse.UUCP> Date: Fri, 9-Aug-85 09:41:37 EDT Article-I.D.: enmasse.447 Posted: Fri Aug 9 09:41:37 1985 Date-Received: Mon, 12-Aug-85 07:29:42 EDT References: <320@baylor.UUCP> <1491@shark.UUCP> <313@ttrdc.UUCP> <560@mmintl.UUCP> <530@brl-tgr.ARPA> Reply-To: frankr@enmasse.UUCP (Franklin Reynolds) Distribution: net Organization: Enmasse Computer Corp., Acton, Mass. Lines: 30 Xref: linus net.books:2041 net.sf-lovers:8274 net.physics:2833 In article <530@brl-tgr.ARPA> wmartin@brl-bmd.UUCP writes: >I was thinking about the "anti-matter vs. matter" qualities of what is >inside a black hole, and, at first, was going to agree with the >contention that, no matter the nature of the matter that formed the >black hole, once falls inside, it loses those qualities and becomes like >unto the primordial ylem (do physicists still use that term?) or at least >undefinable. > >Then I thought of the contentions that I have read that the entire >observable universe could be inside a black hole. Since the radius goes >up with the mass, the average density of a hole with the universe's mass >is rather close to the real average density of the universe... So this >would have to depend then on the mass of the black hole, would it not? >After all, a black hole containing our universe could be orbiting a >black hole containing an anti-matter universe... > The way I think it is supposed to work is that there is no difference between a "normal" black hole and an anti-matter black hole from the outside. What is going on inside (within the event horizon) is undetectable to an outside observer. You can think of black holes as write-only ROMs, you can add stuff to them, but you can't get anything back. If a "normal" black hole collided with an anti-matter black hole an outside observer would see a larger black hole as the result. There is no telling what would happen on the inside of the new black hole. Franklin Reynolds Enmasse Computer Corp. genrad!enmasse!frankr