Well's natural philosophy : for the use of schools, academies and privte students, introducing the latest results of scientific discovery and research ; arranged with special reference to the practical application of physical science to the arts and the experiences of everyday life ; with three hundred and seventy-five engravings (1873)
Wells, David A · New York : Ivison, Blakeman, Taylor and Co. · leaf 435
Fig. 36L … ELECTEO-MAGNETISM. 431 In what man-ner does anelectric currentexert its mag-netic furce ? Fig. 362. By liieans of the galvanometer, the most feeble traces of electricity can bedetected; and electric currents which would fail to intiuence the most sensi-tive gold leaf electrometer can be made to…
Physics · Science · Technology
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