Date: Tue, 19 Aug 2003 19:35:44 +0200
From: Tony Martinez 
Subject: Re: (urth) Father Inire's Mirrors and Wolfe Physics

I forgot: the mirrors are one way to filter out all the frequencies
except the one you're interested in, since only the components whose
wave-lengths subdivide the space between the mirrors exactly add
together, rather than reducing each other.  Lasers and the like are
built on this idea, and provide light with a very narrow frequency
set--although, unfortunately, below light-speeds.

                                --Tony

P.S. Um, I think.  It's been a while, and I don't have my books and
notes etc. with me, so forgive the non-research.

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