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 516
de consists of a thin iron tubeclosely packed with powdered magnetite (magnetic oxide ofiron) and oxides of titanium and chromium. The copper anodeis not consumed and requires infrequent renewal. The cathodehas a life of from 100 to 250 hours, depending on the current.There are two types of… … Fig. 324. — Flame arcmade with impregnatedcarbons beneath a vit-reous canopy. 462 ELECTRICITY AND MAGNETISM To-
Electricity · Magnetism
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