St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 35
rogs legs, and thatthey could be pro-duced when two dif-ferent metals, Fig.35, like iron andcopper, for example,were placed in propercontacft with a nerveand a muscle andthen made to toucheach other. Galvanifirst thought that thefrog generated the eledtricity instead of the metals. Volta proved… … 3» HOW ELECTRICITY IS GENERATED. 33 carried out his belief by construdling what is called a Voltaic Pile. He thought that by makiug several pairs of metals so arranged that all the little currents would help each other, a strong current could be generated. Fig. 36 shows a pile, it being made by…
Electricity
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