Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 262
this method, have not yet been for a suffi- THE MAXIM INCANDESCENT LAMP. 243 ciently long time infuse to give precise results in regard todurability, it seems probable that this form of carbon will provefar superior, in this respect, to any other now in use; and weconsider this au important… … Fig. 129. upon the production of efficient lamps of higher resistance thanthose now in use. In Figs. 126, 127 and 128 are shown different forms of safetydevices invented by Mr. Weston. With the multiple arc sys-tem, it is obvious that the distribution of the current among thebranches depends upon…
Electrical engineering
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