Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 422
^ a rod, bymeans of which it may be plunged intothe fluid or withdrawn at pleasure.When the zinc is withdrawn, the actionceases. This batterv gives a powerfulcurrent for a short time, but it rapidlypolarizes. The length of time duringwhich the fluid will retain its powerdepends on the use that is… … Grenel Battery, BottleForm. and easily made plunge battery, whichis very convenient for temporary use- Ten tumblers, arranged in two rows of five, are heldin place by an apertured board supported a short distanceabove the base board by the round standards. To theseis fitted a board which is split…
Physics · Lantern projection · Electric apparatus and appliances
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