Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 52
uid have a vertical motion, or up and down ; andalso a rotation upon an axis. The vertical movement is well illustrated by Snells Ap-paratus, Fig. 40.* A series ofkeys is moved by an eccentricso that as the crank is turned,they move up and down. Fol-lowing their toj>s with the eye,the vertical… … Fig. 41. tached to wires. As the wire which represents the waveis moved, the cranks which represents molecules revolve.Hence waves have both movements of the molecules. *The pieces of apparatus represented by Figs. 10 and 41 are made by Mr. E.S. Ritchie, of Boston, Mass, BOOK III. MECHANICS. 149.…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
