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 445
index of refraction Mj are heldin a frame as shown in Fig. 314 with a parallel-sided space between their hypothenuse surfaces, which may be filled withthe fluid under investigation. A beam of parallel light is incident nor-mally on AB and falls on the surface AC at an angle i = a- If, now, theprism… … Fig. 314. sin 0 K=z a + (p,fh and sin (psin K = sin (a + 0) ^= n/n-i By the elimination of (p it is found that n = sin a\/ni — sin^ 6 -\- cos a sin d 488. Lummer-Brodhun Photometer. There are a number offorms of photometer in use besides those described in § 396. Oneof the most useful of these is…
Physics
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