Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 12
on a paraffinedboard, the whole forming one pole of our cell. A zinc rod formsthe other pole, and one of them should now be pushed throughthe hole in the middle of the board, until it projects the samedistance from the lower side of the board as the carbon rodsdo. The zinc must not touch the carbon… … copper wire (not insulated), about six feet long, and wrap ittightly around one carbon about ten times,then carry it on to the next, wrapping itaround the second, then on to the rest of thecarbons. All wax should be scraped off be-fore this is done until a clean carbon surfaceis obtained. After…
Electric apparatus and appliances · Electricity
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