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 377
t evolves heat in the copper, and itabsorbs heat when it flows from a cold point to a hot point inthe copper. In iron a current flowing froni a hot point to acold point absorbs heat. 384. Thermo-electric Piles.—In ordsr to increase CHAP. VIII.] ELECTRICITY AND MAGNETISM, 351 the electromotive-force… … Fig. 144. whilst the other set A A A are kept cool. The variouselectromotive-forces then all act in the same direction,and the current is increased in proportion to the numberof pairs of junctions. Powerful thermo-electric batterieshave been made by Clamond,—an iron-galena batteryof 120 pairs…
Electricity · Magnetism
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