Laurence, Lionel · London, School of Optics · leaf 62
be. The actual deviation which light undergoes, when passing from one mediuminto another of different density, at a given angle of incidence, dependson the ratio between the fis of the two media, and not on the high value ofthe//, of the second medium. Thus the refraction is greater when light… … Fig. 46. Graphical Constructions.—The course of a ray can also be graphicallyconstructed in the following manner: Let D G be any ray in air incidentat G on the surface S S (Fig. 46) of a medium whose index is 1-5 or 3/2.From D drop the normal D B and divide B G into three equal spaces. Then…
Optics
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