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 479
of lengthlibrium of the wire ab, wea a + j: b + l- The wire, which is usually of german-silver, forms one side ofan elongated rectangle (Fig. 322), the other three sides of whichare made up of broad copper bands of negligible resistance, at gapsin which the two resistancesto be compared, a and… … The apparatus is par-ticularly convenient for comparing resistances which are almostidentical with each other, such as the comparison of a copy witha standaid. A good plan for this purpose is to insert the resistances to becompared, which may be represented by a and 6, in the twt) endgaps P and q,…
Electricity · Magnetism
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