Re: [ATM] lurie-houghton progress

[Ken Hunter <atm_ken_hunter@yahoo.com>]

Guy Brandenburg <gfbrandenburg@yahoo.com> wrote:
Now, what if you put the convex surface on
the 'perfect' concave surface, and in your light box
you see all sorts of ugly curves like fingerprints or
end-grains of lumber, instead of straight lines. How
do you interpret those curves in such a way as to
guide you when working on the convex surface? Any
thoughts?



Guy...

The old ATM Series from Scientific American has a few descriptions of how to interpret the fringes and offers suggestions on how to treat the optical defects. It keys on the change of air thickness relative to the surfaces and the slope of the air wedge mentioned previously. I suggest that you look at that source as it's a bit much to transcribe all the information you need here...

Ken Hunter

 

 


		
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