Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 154
Powell and Lea-lands Non-Stereo-scopic Binocular Ar-rangement. NON-STEREOSCOPIC BINOCULARS. 99 (silvered) surface d e, of the first prism, is again reflected in the•direction d b; a>nd passing out of that prism perpendicularly to itssurface a f, proceeds towards the secondary body. The two… … \CL must not be in absolute contact along the plane a b, since, if theywere, Newtons rings would be formed; and much nicety is requiredin their adjustment, so that the two reflections may be combinedwithout any blurring of the image in the secondary body. Being(by Mr. Wenhams kindness) the…
Microscopy · Biology
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