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- Path: sparky!uunet!ogicse!emory!swrinde!cs.utexas.edu!ut-emx!astro.as.utexas.edu!joe
- From: joe@astro.as.utexas.edu (Joe Wang)
- Newsgroups: sci.physics
- Subject: Re: dimensionality of space
- Message-ID: <83286@ut-emx.uucp>
- Date: 9 Nov 92 23:12:05 GMT
- Article-I.D.: ut-emx.83286
- References: <1992Nov06.211115.134895@watson.ibm.com> <1992Nov7.013240.1@stsci.edu>
- Sender: news@ut-emx.uucp
- Distribution: na
- Organization: McDonald Observatory, University of Texas @ Austin
- Lines: 11
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-
- 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?
-
- Snap your fingers. Wait a moment and snap your fingers again in a
- different location. Count the number of coodinates you need to
- uniquely the location of the finger snaps.
-
- The number will be 4.
-