Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 387
two media, rather than as the ratio ofthe sines of two angles. The latter mode of statement conveys no clear physical idea, and,moreover, seems to breakdown in the case of normalincidence. 432. Medium with ParallelSurfaces. An incident pencilwill be deflected in one direc-tion on entering the… … Fig. 240. AjB = ACsm {i — r) = / sin (/ — r)cos r = / • sin / ^^n^ — sin^ t — cos t Vn^ — sin When an object is viewednormally to the boundary (Fig.241) there is no lateral dis-placement, but only an apparentchange in distance. Wavesfrom an object 5 at a distanced below the surface of themedium…
Physics
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