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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!moe.ksu.ksu.edu!phys.ksu.edu!diverson
- From: diverson@phys.ksu.edu (David Iverson)
- Newsgroups: sci.physics
- Subject: Re: Gravity & Rubber Sheet Analogy Problem
- Date: 12 Jan 1993 19:49:51 GMT
- Organization: Kansas State University
- Lines: 22
- Distribution: usa
- Message-ID: <1iv7cvINN7l1@moe.ksu.ksu.edu>
- References: <79814@hydra.gatech.EDU> <1993Jan12.175947.18005@novell.com>
- NNTP-Posting-Host: bohr.phys.ksu.edu
- Keywords: gravity, general relativity
-
-
- O.K. I'll put a new twist on this, not an answer, more like a continuation
- of the question.
-
- Take two balls (you choose the size) and sandwich them between two rubber
- sheets. Do this in the SpaceShuttle to avoid the nasty business of an
- external gravity. I imagine that the balls would be pushed towards each
- other as the elastic sheets attempt to minimize their energy. Encompassing
- both balls in one deformation would take less energy than placing each one
- in it's own.
-
- So what do you think about this? Can space-time be characterized as being
- elastic? Does it attempt to minimize some quantity. (does 'energy' still
- hold as the quantity to minimize?)
-
- It's still an imperfect analogy, but maybe it raises a different set of
- questions.
-
- -David "and what happens when 'they' find gravitons?" Iverson
-
- --
- diverson@phys.ksu.edu
-