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 272
stronger whenit is near the side than when in the centre. 409. The interposition of any good conductor ofelectricity between the fine wire coil and the one connected with the bat-tery nearly neutralizes theshocks. The coils beingarranged as represented inFig. 169, interpose a slipof wood or a plate… … 256 DAVISS MANUAL. lead or zinc, one tenth of an inch thick, and as broadas the coils. The sliock will be so much reduced asto be scarcely perceptible. If the interposed plateis broader than the coils, the reduction in the shockis still greater. The magnetizing power of the cur-rent is also…
