Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 393
ue of M will be47rS X mn. when the circuits coincide with each other. 398. The Induction Coil.—Induced currents havein general enomiously high electromotive-forces, and areable to spark across spaces that ordinary battery cur-rents cannot possibly cross. In order to observe theseeffects a piece of… … surrounded by a short inner or primary coil of stoutwire, and by an outer secondary^ coil consisting of manythousand turns of very fine wire, very carefully insulatedbetween its different parts. The primary circuit is joinedto the terminals of a faw pov/erful Groves or Bunsenscells, and in it are…
Electricity · Magnetism
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