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 478
the other to regulatethe length of the wire through which the current must pass. Oneach cylinder there is a square head, one of which is shown at r, sothat the handle can be shifted from one to the other as required ;to A if the wire is to be wound on that cylinder, to-^ if the reverseis desired.… … Fig-. 297. Wheatstones Rheostat. Rheotrope. A pole changer, current reverser, or commutator,e. g., such as the commutator of an induction coil. {Obsolete.) Rhigolene. A petroleum product; a hydrocarbon of low boil-ing point. Its vapor is used in flashing (q. v.) carbon filamentsfor incandescent…
Electricity
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