Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 291
h (seeFig. 171). tii s ■jmywm Fig. 171. The behaviour of currents under magnetic force is some-times illustrated by the floating battery of De La Rive.This is a simple zinc-copper couple, connected by several turnsof insulated copper wire. The plates are mounted on theunder-side of a cork float,… … Fig. 172. By experiments, of which the above may be taken as types,and others depending on quantitative measures, Ampere wasable to lay down as an experimental law that every closedvoltaic circuit carrying a current is identical in its behaviourwith a magnetic shell, magnetized normally, the…
Electricity
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