Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 362
r of the electric discharge was firstrecognized by Henry, in 1842, as the explanation of the ap-parently anomalous magnetization produced in a needle bythe discharge of a Leyden jar. Fedderson, some years later,found, by the use of Wheatstones revolving mirror, that thespark actually consisted of a… … Fig. 222. jar are so arranged that a spark will pass whenever thepotential difference reaches a certain definite value, theapparatus may be employed to measure in arbitrary units 352 THE ELECTRIC DISCHARGE. the quantity of electricity used to charge a condenser. Suchan apparatus, known as Lanes…
Physics
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