A dictionary of electrical words, terms and phrases (1896)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W.J. Johnston company · leaf 319
carry thecurrent to and fromthe filament shall en-ter and leave the lampchamber at points thatare comparativelynear together. Thisis for the purpose ofavoiding the unneces •sary production ofshadows. Commercial incan-descent electric lampsare generally markedwith the potential dif-ference in volts… … Lam.] 308 [Lam. 41e-power of the lamp is greatly increased, but itskife greatly decreased. The lamp chamber is more liable in such cases!o become less transparent from the deposit of afhin layer of carbon or metal on its inner surfaces. In the Swan lamp the filament is made of cot-ton thread. These…
Electricity · Electrical engineering
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