Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 46
t from the lens the length ofthe radius less one-fourth the thick- Fig. 25.—The radius of a convex lens,ness of that lens (nearly). Formula? relating to a biconvex lens.—Where P is one focus, P itsconjugate, F principal focus (solar focus, or that for a very distantobject), R radius of curvature… … 22 ELEMENTARY PRINCIPLES OF MICROSCOPICAL OPTICS and B, the distance of its conjugate from F, the other principalfocus on the other side, then AB=FF; or, in an equiconvex lens, A B= F2. In an equiconvex lens of crown glass /u = L5 if F = radius ofcurvature. But in a plano-convex lens of crown glass…
Microscopy
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