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From: John Denker
Sent: Saturday, February 14, 2004 5:44 PM
Subject: Re: Magnesium Flouride
I don't think it has anything to do with the film. It
has to do with the reflection off the index-mismatch.
It's called an AR (anti-reflection) coating.
MgF is convenient because it has an index that is
roughly the geometric mean of the two things (air
and glass) that you're interfacing, and it is
relatively easy to apply.