Electrical appliances of the present day; being a report on the Paris Electrical Exhibition of 1881 (1884)
Heap, D. P. (David Porter), b. 1843 · New York, D. Van Nostrand · leaf 186
balanced that, when the indicating spot of light rests at the center of its scale, the current is normal; but the spot moves to the left or right, according as the electro- motive force diminishes or increases. In addition, there is an apparatus for measuring and recording the quan- tity of… … Flo. 172. The principle of both instruments depends upon the fact, that the weight of metal deposited per unit of time, in an electro-plating bath, is propor- tioned to the quantity of electricity passing through it in the same period, or, in other words, to the strength of the current; and, as the…
International Electrical Congress, Paris, 1881
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