Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 276
REFLECTION AND REFRACTION. 265 192. General Construction for Refraction at a SingleSurface (D., 125). — Let AB (Fig. 125) be an advancingwave-front and CD the bounding surface of the densermedium. Through a number of points of AB draw normals AE, BF, etc. Make all these normals equal to one … Fig. 125. another and connect their extremities by a plane curve.If t is the time required to traverse these normals with thespeed v in the first medium, then this plane curve EaFwould have been the wave-front at the end of the intervalt if no denser medium had intervened. To find the wave-front in…
Physics
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