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From: bill@utastro.UUCP (William H. Jefferys)
Newsgroups: net.physics
Subject: Re: Clouds
Message-ID: <174@utastro.UUCP>
Date: Sat, 21-Apr-84 00:34:00 EST
Article-I.D.: utastro.174
Posted: Sat Apr 21 00:34:00 1984
Date-Received: Sun, 22-Apr-84 08:49:37 EST
References: <12310@sri-arpa.UUCP>
Organization: UTexas Astronomy Dept., Austin, Texas
Lines: 18

Mark Scheuer sent me this note before posting.  Since I am responsible for
the original posting of Minnaert's explanation of the Green Flash, I
ought to comment.

Minnaert may well be wrong.  I simply relayed his explanation.  However,
I do have a problem with Mark Scheuer's explanation, since it relies
upon the "K" line of (singly) ionized Calcium.  Since the wavelength
of that line is in the near UV, how can it produce a *green* flash?

Mark, if you get this and have a reference for this theory (which I
would be very interested in learning more about), could you post it?
Thanks!
-- 

	Bill Jefferys  8-%
	Astronomy Dept, University of Texas, Austin TX 78712   (USnail)
	{ihnp4,kpno,ctvax}!ut-sally!utastro!bill   (uucp)
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