Davis's manual of magnetism : including galvanism, magnetism, electro-magnetism, electro-dynamics, magneto-electricity, and thermo-electricity (1854)
Davis, Daniel · Boston : Palmer and Hall · leaf 276
plate of metal is divided to its centre,no secondary is induced in it, and it exerts no neu-tralizing action ; the same is the case with the ribbonspiral in <^ 411, when its cups are disconnected.Similar phenomena are produced by the introductionof a metallic tube into a wire helix, as… … the coil A, through which the battery current istransmitted, connect its cups with those of a thirdspiral, C, of the same kind, removed to a little dis-tance, so as to be beyond the influence of the cur-rent in A. The secondary current induced in B willnow flow through C, and if a fine wire coil,…
