Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 273
ir ratio isthen the indejc_o_f_refraction. Produce the lineBA till it intersects theinner circle in E, andthrough E draw EC parallel to the normal DA. It intersects the outer circle in C. Draw AC; it is the path ofthe refracted ray. The triangles EAH and BAF are similar. Therefore Tt TJ T> T71… … Fig. 122. REFLECTION AND REFRACTION. 263 When the ray passes into a less dense medium, throughthe intersection of the ray produced \vith the larger circledraw a parallel to the normal, cutting the smaller circle.The line through this intersection and the point of incidence is the refracted ray.…
Physics
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