Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 334
g^m Fig, 168. will become incandescent in that part, and will burn and growthinner towards the end. The objections to these lamps are:the contacts make too much shadow, derive a certain degree ofheat by conductibility, and the action of the lateral contact isvery delicate. The elevation of the… … Fig. 169. Fig. 170. Fig. 171, incandescent lamp in vacuum, by making a graphite conductorin several parallel horizontal parts, or slices (figure 169) and 314 THE ELECTRIC LIGHT. tightening them to a moderate degree between two contacts. Inmaking his lamp, however, he met with some practical…
Electrical engineering
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