Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 480
of lengthlibiium Fig. 321.of the wire ab, we a_ h^h + l ~ X 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, d… … The apparatus is par-ticularly convenient for comparing resistances which are almostidentical with each other, such as the comparison of a copy witha standard. A good plan for this purpose is to insert the resistances to becompared, which may be represented by a and h, in the two endgaps p and Q,…
Electricity · Magnetism
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