Introductory course of natural philosophy for the use of schools and academies. Ed. from Ganot's popular physics. By William G. Peck (1869)
Ganot, Adolphe, 1804-1887, Peck, William Guy, 1820-1892 · New York A.S. Barnes · leaf 436
the nerves which run on each side of it, as shown inFig. 283 • then holdinga small plate of zinc,z. in the hand, webring one end of it incontact with the copperstem that holds thehook, and then touchthe legs of the frog withthe other end. A t everycontact the muscles con-tract, reproducing allthe… … l*ig. 2r>8 Voltas Theory of Contact. 410. Volta repeated the experiment of Galvani, andafter much study, advanced the theory of contact. Accord-ing to this theory, when two metals or other dissimilar sub-stances are simply brought in contact, there is always adecomposition of the natural…
Physics
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