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- Newsgroups: sci.physics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!darwin.sura.net!sgiblab!newsun!dseeman
- From: dseeman@novell.com (Daniel Seeman)
- Subject: Re: bubble in container
- Message-ID: <1992Dec29.220506.27387@novell.com>
- Sender: news@novell.com (The Netnews Manager)
- Nntp-Posting-Host: db.sjf.novell.com
- Organization: Novell Inc., San Jose, Califonia
- References: <1992Dec29.011215.11278@novell.com> <1992Dec29.165004.23310@novell.com> <29DEC199215373722@venus.tamu.edu>
- Date: Tue, 29 Dec 1992 22:05:06 GMT
- Lines: 30
-
- In article <29DEC199215373722@venus.tamu.edu> dwr2560@venus.tamu.edu (RING, DAVID WAYNE) writes:
- >dseeman@novell.com (Daniel Seeman) writes...
- >>But the sinking part is really not central to the problem. One could just
- >>anchor the bubble to the bottom of the container, fill the container with water,
- >>and close it. With the help of a friendly gremlin (that lives inside the con-
- >>tainer, of course ;-) the bubble would get bursted. After the system returns
- >>to equilibrium, what are the differences between the initial and final pressures
- >>in the container?
- >
- >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.
- >
- >:-)
- >
- >Dave Ring
- >dwr2560@zeus.tamu.edu
-
- This is taking more twists than a bread tie! Cool!
-
- dks.
-