Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
ent; but when the battery current is stopped or broken, thenthere is a secondary current produced in TH, in the opposite directionto that first produced. These are called induced currents, or second-ary currents, but they are only momentary. To facilitate the completion and interruption of the… … 785. -Bv usi Figure 64.—Induced currents of different orders. ng spirals of copper ribbon, alternating with helices of insu-lated wire, and arranging themin the order shown in the figure,it is demonstrated that second-ary, or induced currents, pro-duce other induced currents ofthe second, third,…
Physics · Astronomy
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