An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 513
roximately equal rates. Theexpenditure of carbon grows larger with the current and isapproximately independent of the size of the carbons, so thatcarbons of large diameters have a longer life than smallercarbons. 312. Arc-lamp mechanism. In order that the electric arcmay be used for commercial… … |Fig. 321. — Open arc pro-duced by alternating cur-rent. ELECTRIC LIGHTING 459 as an arc lamp. It consists of a case which contains the feed-ing mechanism, below which is a frame to support the lower ornegative carbon, and a glass shade. The feeding mechanismhas two duties to perform: 1. To…
Electricity · Magnetism
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