Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 478
fferences byuse of the current from a bat-tery. Fig. 293 shows dia-grammatically the arrange-ment of parts in a commonform of induction coiL oftencalled the Ruhmkorff coiLfrom one of its later improvers.The primary circuit of stoutwire is coiled in one or a vervfew layers about a core. JLV. made of… … 468 INDUCTION OF CURRENTS. To guard against sparking between different layers of thesecondary, it is usually wound in a number of disc-like coils,joined in series, but separated by insulating partitions. Theprimary current flowing from the battery is rendered inter-mittent by a vibrator, J, which…
Physics
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