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 413
Fig. 274. Fig. 275. with the disc must follow the motion of the disc. This was Aragosfirst experiment: a magnetic needle is suspended hoiizontallyabove a copper disc mounted on the vertical axis of a whirlingtable ; when the disc is made to rotate, the needle follows itsmotion, though more slowly.…
Electricity · Magnetism
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