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- Newsgroups: sci.physics
- Path: sparky!uunet!cis.ohio-state.edu!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!ncar!noao!stsci!stosc!zellner
- From: zellner@stsci.edu
- Subject: Re: dimensionality of space
- Message-ID: <1992Nov7.013240.1@stsci.edu>
- Lines: 11
- Sender: news@stsci.edu
- Organization: Space Telescope Science Institute
- References: <1992Nov06.211115.134895@watson.ibm.com>
- Distribution: na
- Date: Sat, 7 Nov 1992 06:32:40 GMT
-
- In article <1992Nov06.211115.134895@watson.ibm.com>, lucas@watson.ibm.com (Bruce D. Lucas) writes:
- > How do we know space is three-dimensional, or space-time
- > four-dimensional? Is there a simple experiment one can do to
- > determine the dimensionality of space or of space-time?
-
- Keplerian orbits of planets around the sun. They are stable in 2 or 3
- dimensions, but I think not in most higher dimensionalities or in things
- like 3 + delta dimensions. Can someone confirm that?
-
- Ben
-
-