Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 346
ly a transparentbody, as indicated in Fig. 207, itsdirection is changed. The portion ata is held back, so that when h reachesthe body the wave-front has taken the position a¥, and the direction of the beam is changed as shown in the figure. Thischanging of the directionof light upon entering…
Physics
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