Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 362
t would, for the same reasons, on striking the rare surface, be turned back again into the denser medium. In such a case the surface would act as an ordinary reflector. Evidently total reflection occurs whenever the angle of refraction is more than 90°, because the surface forms an angle of 90°… … 348 LIGHT [§§ 678-579
Physics
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