Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 346
Fig. 132. electrical testing, with the plugs in their places. Solong as the plugs remain in, the current flows through CHAP. VI.] ELECTRICITY AND MAGNETISM. 321 the selid brass pieces and plugs without encounteringany serious resistance; but when any plug is removed,the current can only pass from…
Electricity · Magnetism
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