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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Bris does not work
From: Alexandre Eremenko
Date: 2012 Jul 27, 17:26 -0400
From: Alexandre Eremenko
Date: 2012 Jul 27, 17:26 -0400
Bill, You are right in principle: > I think (2,1,3,1) produces the same image as (3,1,2,1). > Similarly for (3,1,3,2) and (3,2,3,2). Probably a misprint: (3,1,3,2) same as (3,2,3,1). Also, both my argument and your argument assumes that there is no inner reflection. Now, as Greg tells us, they use some coating, and to clarify the matter completely it remains to figure out which side of the middle mirror is coated. Or both. I suppose (as Greg hints) that they suppress somehow the inner reflection. Alex.
