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- Newsgroups: sci.physics
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!newsserver.sfu.ca!rs12-annex3.sfu.ca!palmer
- From: Leigh Palmer <palmer@sfu.ca>
- Subject: Re: bubble in container
- Message-ID: <1992Dec30.003958.10261@sfu.ca>
- X-Xxmessage-Id: <A7663029AE011C19@rs12-annex3.sfu.ca>
- X-Xxdate: Tue, 29 Dec 92 00:41:13 GMT
- Sender: news@sfu.ca
- Organization: Simon Fraser University
- X-Useragent: Nuntius v1.1.1d16
- References: <1992Dec29.165004.23310@novell.com>
- Date: Wed, 30 Dec 1992 00:39:58 GMT
- Lines: 19
-
- In article <29DEC199215373722@venus.tamu.edu> RING,
- dwr2560@venus.tamu.edu writes:
- >Let's see if we can make the paradox a little clearer. Start with the
- >sealed jar of incompressible fluid. Our gremlin builds a small sphere
- >near the bottom of the container which naturally will contain a bit of
- >fluid. Then through a tube he drains the sphere and fills it with
- >air at the local fluid pressure. He then breaks the sphere and lets the
- >bubble rise to the top, increasing the pressure everywhere. When the
- >bubble reaches the top he reverses the procedure, surrounding it with
- >a sphere, filling it with fluid, and breaking the sphere.
- >
- >The final state has the same fluid in the same volume but different
- >pressure. In fact one can repeat the procedure ad infinitum to get
- >as high a pressure as one likes.
-
- 'cept as soon as he pumps one femtoliter of air into the bubble the
- pressure becomes infinite. :-))
-
- Leigh
-