A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 469
of its simplicity of construction, isrepresented in Fig. 217. A horizontal cross sectioii 438 ELECTRICAL CURRENT MEASURE. [Exi» 73. is given also in Fig. 218. The instrument consistsof a compass (a, Fig. 217, ami dgif. Fig. 218) mountedon a wooden support in tlie middle of a 6oil of insu-lated…
Physics
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