Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 471
Many othermachines have since been constructed, but in all cases theexpense of moving them has been so great as to precludetheir economical use. Fig. 305 represents an electro-magnetic machine, constructed ac-cording to the design of M. Froment. It is composed of four electro- (438) What is the… … INDUCTION. 46^ magnets, acting in pairs upon two pieces of soft iron, P, only oneof which is seen in the figure. These pieces, attracted by the electro-magnets, EF, transmit the motion by means of a working-beam, toa crank, m, fixed at the extremity of a horizontal arbor. The latterbears an iron…
Physics
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