Elementary treatise on physics, experimental and applied : for the use of colleges and schools (1906)
Ganot, A. (Adolphe), 1804-1887, Atkinson, Edmund, 1831-1901, Reinold, A. W. (Arnold William), 1843-1921 · New York : Wood · leaf 686
any subsequent instant be touched bya plane parallel to the original plane. The disturbances propagated fromthe points in the first position of the wave will mutually destroy each other,except in the tangent plane ; consequently the wave advances as a planewave, its successive positions being the… … In any given moment let nin (fig. 639) be the position of the wave-front ofa beam of Hght, which, moving through any medium, meets the plane surface AB of any denser refract-ing medium. In the samemoment in which thewave-front reaches ;/, inbecomes the centre of aspherical wave systemp which moves…
Physics
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