Article View: sci.physics
Article #4338Re: Expansion
From: Benjamin Weiner
Date: Fri, 02 Oct 1992 21:09
Date: Fri, 02 Oct 1992 21:09
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John Baez writes: > Namely, say one takes a ball of "dust" (in the sense of >relativity, i.e., no repulsive forces) of a given density and radius R. >How long will it take to collapse as a function of R? > >Extra credit if you solve it for rotating dustballs, so that it's more >like honest galaxies. I bet this is just one of John Baez's homework problems and he's trying to get us to solve it for him. That sneaky John. Well, it won't work, we caught you this time!
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Path: arc1-ca.pugleaf.net!sparky!uunet!dziuxsolim.rutgers.edu!ruhets.rutgers.edu!bweiner From: bweiner@ruhets.rutgers.edu (Benjamin Weiner) Newsgroups: sci.physics Subject: Re: Expansion Message-ID: <Oct.2.17.09.44.1992.5587@ruhets.rutgers.edu> Date: 2 Oct 92 21:09:44 GMT References: <29SEP199220244986@zeus.tamu.edu> <22594@galaxy.ucr.edu> <30SEP199220042116@zeus.tamu.edu> <1992Oct1.205837.11620@galois.mit.edu> Organization: Rutgers Univ., New Brunswick, N.J. Lines: 11