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 468
ystals. This phenomenon is called double refraction.When the waves travel in the crystal in the direction of the crystal-lographic axis there is no double refraction; hence any line inthe crystal parallel to the axis is called an optic axis. These experiments were repeated and extended by Huyghens… … out deviation; and if the incidence is oblique this ray is deviated,with an index of refraction which is independent of the angle ofmcidence. The other ray e is deviated in all cases, unless it travelsalong an optic axis, and the index of refraction varies with theangle of incidence. The first is…
Physics
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