Current Electricity

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“Take the zinc from the tumbler of acid and, while it is yet wet, rub thereon a few drops of mercury...replace the zinc in the acid, and notice that no bubbles are given off. Place a copper strip in the solution...bring the strips together at their upper ends as shown. Connect the metals and observe the result.” -Avery 1895


Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 433


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