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Re: [ATM] WAS Magnalium....

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Subject: Re: [ATM] WAS Magnalium....
From: Mark Holm <mdholm@telerama.com>
Date: Fri, 06 May 2005 23:51:59 -0400
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> a CONCAVE mirror that has
> precisely the same (but opposite) figure as the convex
> one that you want. Then you build a monochromatic
> light source and you use interference testing to see
> how close the two surfaces are. If the interference
> fringes are straight


But then don't your radii of curvature have to be identical to a pretty 
fine tolerance, too?

-- 
Mark Holm
mdholm@telerama.com

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