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- Path: sparky!uunet!cs.utexas.edu!tamsun.tamu.edu!zeus.tamu.edu!dwr2560
- From: dwr2560@zeus.tamu.edu (RING, DAVID WAYNE)
- Newsgroups: sci.physics
- Subject: Re: Black hole insights
- Date: 25 Jan 1993 20:29 CST
- Organization: Texas A&M University, Academic Computing Services
- Lines: 13
- Distribution: world
- Message-ID: <25JAN199320295895@zeus.tamu.edu>
- References: <C18EqF.86x@megatest.com> <1jtf4sINNrcd@gap.caltech.edu> <mcirvin.727904072@husc.harvard.edu>
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- mcirvin@husc8.harvard.edu (Matt McIrvin) writes...
- >Now, what *I'm* confused about is the situation in which the object has
- >a finite mass. I agree that the horizon will come out to meet the object
- >and engulf it, but does this mean the observer will see it wink out
- >abruptly? Forget "coordinate time"-- that's by definition dependent on an
- >arbitrary definition. What do the future light cones do?
-
- They follow the horizon. This follows from the definition of the event
- horizon. It is the surface on which a photon will never escape nor ever
- fall in. (If it's aimed properly)
-
- Dave Ring
- dwr2560@zeus.tamu.edu
-