Re: dimensionality of space

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Article #4512

#4512

From: Joe Wang
Date: Mon, 09 Nov 1992 23:12

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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.

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References: <1992Nov06.211115.134895@watson.ibm.com> <1992Nov7.013240.1@stsci.edu>

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Path: arc1-ca.pugleaf.net!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>
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Organization: McDonald Observatory, University of Texas @ Austin
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