Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 73
d sense of the word, everything isan electrical resistance. Pieces of glass, porcelain or drywood are resistances of extremely high value. On the otherhand, a short piece of copper wire of large cross-sectionwould be a resistance of extremely low value. Where apiece of glass or porcelain of given… … FiG. 70.—Battery cell short-circuited. billionth part of an ohm. Nevertheless they are both resist-ances, the only difference being in the degree that each oneopposes the flow of an electric current. The two cases are extremes and are rarely referred to inpractice as being resistances. Porcelain…
Electric machinery
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