Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 234
an iron-copper couplebe at 50°, and the other at 250°; the diagram gives about 10microvolts for the difference of the ordinates corresponding to themean temperature, 150°: the electromotive force will then be 10 x200 = 2000 microvolts or 2 x 10^ volts. 152. As the area xmmn (Fig. 136) represents… … current flows in the direction nmmnis positive in reference to a. The outline of the area xmmn may be considered as represent-ing the cycle traversed by the electricity, and if we assume thatthe temperatures are measuredfrom absolute zero, the area com-prised between one of the bound-ing lines of…
Electricity · Magnetism
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