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Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 288

An illustration from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families, 1878, leaf 288
vesof sound pass through it, so does an incandescent or shining particle,vibrating with surprising rapidity, impress a w^ave-like movement onthe ether, and this movement, finally impinging on the eye, is what weterm si git t. 500. Figure 33.—Directions of vibrations and waves oflight.—If the free… … right angles to the length of the cord, or the direction of the waves.This is the peculiarity of the movement of light; that is, its vibrationsare transverse to the course of the raij. With sound, the vibrations areexecuted in the direction of the resulting wave, and not at right anglesto it.…

Physics · Astronomy

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