Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 747
is no de-viation in the first prism, the waves are divided into two sys-tems, with vibrations respectively parallel and perpendicularto AB, which traverse the crystal with different velocities. On entering the A CD,the planes of the vibra-tions do not change,but that system whichbefore had the… … CONICAL REFRACTION. 737 neither of the refracted rays, in general, obeys the ordinarylaw of refraction, but there are two directions in whichboth refracted rays coincide. The phenomena were first ex-plained by Fresnel on the assumption that a disturbance insuch a crystal was propagated as a wave…
Physics
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