The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 80
,and this constitutes the positive element. A ball of zinc at the end STANDARD ELECTRICAIy DICTIONARY. 75 of an insulated copper wire affords the connection with the zincand mercury. Its great advantage is that the smallest scraps ofzinc can be used in it, by being dropped into the mercury.…
Electricity
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