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From: Physics@sri-unix.ARPA
Newsgroups: net.physics
Subject: Do Positrons Have Negative Mass?
Message-ID: <529@sri-arpa.ARPA>
Date: Sat, 7-Sep-85 03:58:26 EDT
Article-I.D.: sri-arpa.529
Posted: Sat Sep  7 03:58:26 1985
Date-Received: Mon, 9-Sep-85 02:45:25 EDT
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Date: Wed, 4-Sep-85 06:18:47 PDT
From: ihnp4!houxm!mhuxt!mhuxr!mhuxn!charm!grl@UCB-Vax.arpa (George Lake)
Article-I.D.: <739@charm.UUCP>
In-Reply-To: Article(s) <437@ttidcb.UUCP> <1115@ihlpg.UUCP>,
	<607@utastro.UUCP>

I've tried to avoid this, relying on Ethan to tidy up these disputes
when they go too far.  Antimatter has not been observed to fall.
What has been shown is that virtual positrons behave like virtual 
electrons.  There are a couple of people around here who always 
grouse about the virtual and have plans on the back burner to
drop real positrons.  Nobody has yet.