The mathematical theory of electricity and magnetism (1911)
Jeans, James Hopwood, Sir, 1877-1946 · Cambridge [Eng.] : University Press · leaf 323
has passed through the instrument. The Measurement of Resistance. 350. The Resistance Box. A resistance box is a piece of apparatuswhich consists essentially of a collection of coils of wire of known resistances,arranged so that any combination of these coils can be arranged in series.The most… … Fig. 97. band of copper is continuous, except between the two terminals of each coil,and in these places the copper is cut away in such a way that a copper plugcan be made to fit exactly into the gap, and so put the two sides of the gapin electrical contact through the plug. The arrangement is…
Electricity · Magnetism
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