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 419
points of thesame wave front. Let us find the effect of an extended wave plane front AB (Fig, 281) at the point P. In accord-ance with Huyghens principle,the resultant effect at P may beregarded as the sum of the ef-fects separately due to all thepoints in the wave front, eachoriginating its… … INTERFERENCE. 4O3 spheres will intersect the wave front in circles, as shown inFig. 282 concentric with 0, the pole of the wave with respect to P.The areas between successive circles are called half-period zones.The student may easily find by calculation that these areas areapproximately equal. It…
Physics
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