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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 502

An illustration from An elementary book on electricity and magnetism and their applications, 1919, leaf 502
ellulose (wood fiber) was squirted intoalcohol to form a thread, and after being bent into the rightshape was carbonized by baking for many hours. Then itwas found that a more uniform filament could be produced bytreating the filament so that a coating of graphitic carbonwas deposited; this was… … Fig. 312.— EarlyEdison incandes-cent lamp. 448 ELECTRICITY AND MAGNETISM after flashing in gasolene vapor, by baking again at thefurnace temperature. The ordinary carbon filament has lessresistance when hot than when cold, but the so-called metal-lized carbon filament behaves like a metal and…

Electricity · Magnetism

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