Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 26
fast as the negative. Theuse of wheels of different diameters thus furnishes the means forkeeping the light at a given point, which is a matter of consider-able importance in almost all of the uses to which it is applied;and when a reflector is used, is absolutely necessary, as other-wise it would… … Fig. 6. 12 TiiK KLK.rnnc Mr.nr. (arl)ons together and the other for separating them, and it is prin-cipal ly in the a(Ulitioii of this last arrangement that the lampditiers from that of Dul)osc(|, there being, in the latter form, no]>rovision for autoniatically relighting the lamp in ease it…
Electrical engineering
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