Talk:Shearing interferometer
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This article concentrates on the use of a shear plate. Although important there are a lot of other methods of producing a shearing interferometer Doc phil 11:59, 14 June 2007 (UTC)
The formula for the spacing of fringes lacks all units. 07:56, 3 September 2012 (UTC) — Preceding unsigned comment added by 130.37.34.227 (talk)