Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 432
Fig. 316. KING-SYSTEM OF PLATES. 413 … the ray passes through the plate parallel to the optic axis, and isnot doubly refracted. Let E be the position of the eye immediatelybehind the analyzer (not shownin Fig. 317), S S the plate, andOE the direction of the axis.Now an oblique ray that reachesthe eye from any point P hasbeen doubly…
Physics
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