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From: hull@hao.UUCP (Howard Hull)
Newsgroups: net.physics
Subject: Collison with ONE particle?
Message-ID: <1702@hao.UUCP>
Date: Sun, 18-Aug-85 15:24:24 EDT
Article-I.D.: hao.1702
Posted: Sun Aug 18 15:24:24 1985
Date-Received: Sat, 24-Aug-85 01:36:22 EDT
References: <494@sri-arpa> <496@sri-arpa.ARPA>
Organization: High Altitude Obs./NCAR, Boulder CO
Lines: 19

> From:  Doug Gwyn (VLD/VMB) 
> 
> (5) Only one electron in the whole universe.
> 
> 	This sounds like an idea attributed to Feynman and Wheeler.
> 	The idea is that a positron can be considered an electron
> 	going backward in time.  If one thinks solely in terms of
> 	particle collisions in space-time, it becomes possible to
> 	propose that there is only one electron/positron trajectory
> 	zigzagging back and forth in time to produce all the
> 	electrons and positrons that we observe.

I was curious about how you describe a collision between two identical
particles using only one particle in a space-time continuum (in which every
space-time point is assumed to be unique).  I also thought there might be
one or two others on the net wondering the same thing, which is why I put
up this question instead of using mail.  Thanks in advance...
							Howard Hull
        {ucbvax!hplabs | allegra!nbires | harpo!seismo } !hao!hull