Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 579
may be used inmany very interesting experiments. EXPERIMENTS WITH THE INDUCTION COIL. The spark between the points of the wires that extendfrom opposite ends of the coil toward its center is of itselfinteresting. It is in fact a miniature discharge of lightningof which we have entire control. 556… … ing altogether spiteful. A piece of paper or cardboardplaced between the points is readily punctured, and the cur-rent finds its wa} through mica, the surface of which it willfollow in various directions toward the hole through which INDUCTION BY ELECTRIC CURRENTS. bright. 557A it passes, at which…
Physics · Lantern projection · Electric apparatus and appliances
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