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From: pmk@prometheus.UUCP (Paul M Koloc)
Newsgroups: net.physics
Subject: Re: Re: Re: White Holes?
Message-ID: <175@prometheus.UUCP>
Date: Mon, 26-Aug-85 08:03:51 EDT
Article-I.D.: promethe.175
Posted: Mon Aug 26 08:03:51 1985
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References: <3656@decwrl.UUCP> <166@prometheus.UUCP> <490@talcott.UUCP> <937@oddjob.UUCP> <171@prometheus.UUCP> <966@brl-tgr.ARPA>
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In an earlier article I corrected an estimate of electron radius:
> > Actually, electron radius is ~ e^2/(m*c^2) ~ 3*10^15 meters

In article <966@brl-tgr.ARPA> (Doug Gwyn gwyn@brl-tgr.ARPA
Organization: Ballistic Research Lab challenges:
> Oh, really?  

Yep! An electron is neato because its the ground state of "THE" 
elementary half particle.  A pure information annihilator.  
Enough for the commercials.

> How did you determine this?

Assume that the energy of a "still" electron is ~ due to its electro- 
static energy.  If that's a reasonable approximation then, its energy 
can be measured by its still mass.  So Energy(mass) = Energy(electric 
field).  Then m*c^2 = e^2/r;   e is proportional to charge, m is mass 
and c is light speed.    Then r (its smallest smudge radius) is as 
above!       Happy?    :-)

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