Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 367
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 and the otherhorizontal, no ripples can pass to the end of the cord, foronly vertical ripples can pass the second grating;… … Fig. 240.—Apparatus to illustrate polarization of light. To illustrate this we may cut two thin slices of tourma-line parallel to the axis of the crystal. These appear to actupon a ray of light as the gratings, represented in Fig. 240,act upon the vibrating cord. When these slices are arrangedso…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
