Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 366
lines into asolid black circle. In thinking, then, of a ray of light, wemust think of it as vibrating in all possible directions, ina plane at right angles to its line of propagation. Whensuch a ray passes through a homogeneous medium, like theether, no particular result follows; but when it… … Fig. 239. 344 PHYSIOS any and every plane so long as it passes freely through theair. If now it passes through a couple of vertical gratings,the ripples must all be in a vertical plane. Had the grat-ings been horizontal, only horizontal ripples would havebeen possible. If one grating be vertical…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
