The elements of natural philosophy : copiously illustrated by familiar experiments and containing descriptions of instruments, with directions for using : designed for the use of schools and academies (1856)
Sprague, A. W. (Alfred White), 1821-1891 · Boston : Phillips, Sampson & Company · leaf 285
cond loire held near to andi^arallel with it; and^ on sud-denly interrupting the first current^ the second or ifiducedone instantly reappears in an opposite direction to the courseit first followed.— This proposition may be illustrated by the ar-rangement shown in Fig. 225, known as the Separable… … the base-board; one of its ends connecting with the screw-cup,A, and the other with the rasp, B. The exterior helix, E, iscomposed of a great extent of fine insulated wire, which may belifted off from the inner helix when desired. Its ends are en-closed in two brass caps, to which are soldered the…
Physics
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