Re: (ATM) Accuracy of Foucault Test

Mel Bartels (mbartels@efn.org)
Fri, 18 Aug 1995 08:14:49 -0700 (PDT)

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Steve, that is a very fine anecdotal story you give, but, with all due respect, if only one or two people in the world can do this, how does it apply to the rest of us?

Readings to 0.001" imply abilities to do mirrors to 1/100 wave. I can't remember a time when even the air between me and the mirror was that calm. Also, at 1/100, you are looking at ripple, so how could a zonal measurement be trusted anyhow?

Mel

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