Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 577
ces.—Any transparent medium bounded bytwo parallel plane surfaces is called a plate. When light traverses a plateof any substance, the emergent rays areparallel to the incident rays. Let SA be a ray incident on one faceof a glass plate (fig. 525), and DB theemergent ray, / and r the angles of… … a second time, and the index is then But we have seen that the index of refraction of glass with respect to air is the reciprocal of the index of airwith respect to glass ; hence sin /sinr sin rsin / But as the two normals at A and D are parallel, the angles r and / areequal, as being alternate…
Physics
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