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The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)

Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 575

An illustration from The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering, 1897, leaf 575 — he current passingthrough the wire heats it. This current by Ohms law is propor-tional to the electro-motive force between the terminals. As it isheated it expands and as it cools contracts, definite expanding and 57o STANDARD ELECTRICAL DICTIONARY. contracting corresponding to definite potential… … Fig. 345- Cardew Voltmeter. In this construction for a given expansion of the wire the piecec only moves one half as much. The advantage of using a wiretwice as long as would be required for the same degree of move-ment were the full expansion utilized is that a very thin wire canbe employed. Such…

Electricity

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