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 471
e ordinary ray alone if they are at rightangles. It follows that light is doubly refracted by tourmaline,but that the ordinary ray is totally absorbed. As a remarkableexample of Kirchhoffs law, it may be mentioned that if tourmalineis raised to a high temperature it emits polarized radiation.… … Fig. 323. 522. Polarization by Reflection. About 1808 Malus discoveredthat light reflected from glass at a definite angle acquires prop-erties similar to that of lighttransmitted through tourmalineor Iceland spar. When light ispolarized by reflection from amirror A (Fig. 323a) a largefraction is…
Physics
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