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 445
t, also,is moved in the neighborhood of a conducting wire, these currents are alsoinduced. 818. Magneto-electric machines, arranged for developingelectricity by the reaction of a magnet, are constructed in agreat variety of forms. In some, permanent steel magnets areused; in others, temporary soft… … It consists of a compound horse-shoe magnet, S, Fig. 372, boltedto a mahogany stand, arranged insuch a manner that an electro-magnet, or armature, A B, mount-ed on an axis, revolves in front ofits poles, by turning a multiplyingwheel, W. This electro-magnet,or armature, consists of two coresof soft…
Physics · Science · Technology
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