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 175
ontact with the metal plates, and this causes a small decreaseof electromotive force while the current is passing. The normalelectromotive force of a Daniells cell is about 1 07 volt. In Groves battery (1840) the evolution of hydrogen is sup-pressed by the employment of strong nitric acid, which… … Fig. 100. 109] VARIOUS FORMS 153 the nitric acid by a partition of porous earthenware. The use ofnitric acid necessitates the replacement of copper by a metal,platinum, which the acid does not attack. Bunsens battery (Fig. 101) is a modification of Groves, inwhich rods of dense gas-graphite are…
Electricity · Magnetism
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