Wright, Mark R., 1854- · London : Longmans · leaf 118
at a. The angle l a b isthe angle of incidence; and the angleK A c the angle of refraction. Fig. 89 represents a rectangulartrough, 16 X 11 X 2, one end of glass,the rest tin. A circle, 5 radius, is cutout of the front face and glass substi-tuted. The strip on the top 18 x 2, is movable, and has… … no Light the water at c. The refraction of the beam is distinctly seen. Youwill not fail to observe that part of the beam is reflected as c R. When light passes from air to a denser medium, part is bent towards the normal, and isrefracted, part is reflectedand part is absorbed. The law of sines.—?^…
Physics
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