Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 329
re of the two carbons lessappreciable to the passage of the branch currents. The resistance of the large lamp is rather less than that ofthe small ones. In the 10 small lamps the carbon pencils barnaway at the rate of about 2 inches per hour. The average resistance of each small lamp, including… … Fig. 163. The carbons are manufactured in Paris in lengths of about oneyard, and at a cost of about 20 cents per yard, which lengthwould keep up a light for 12 hours. The negative disks are of ordinary battery carbon, and theweight required to keep carbons in contact is about IJ lbs. The length of…
Electrical engineering
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