Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 747
refracting substance, two images of a bright source of light may be obtained with thetransmitted beams polarizedin planes at right angles. 1 —— >—— 3 Q > D ployed, it is cut so that therefracting edge is parallel tothe optic axis, because thedifference of deviation be-tween the ordinary and… … FH>. 480. of the same material as the back one, but with the face AB(Fig. 479) perpendicular to the optic axis. Light inci-dent on the face AB perpendicu-larly is not modified until it reachesAC, where double refraction oc-curs; the ordinary ray continueswithout deviation, since the indexof…
Physics
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