Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 611
ing fields, due to the coils onC being wound in opposite directions,the feeding of the lamp is done auto-matically, and the actual distance of thetwo carbons varies but little. 547. Incandescent electric lamps.—Theincandescent (or glow) light is pro-duced by the heating of some refractorybody to a… … INCANDESCENT ELECTRIC LAMPS. 591 that the oxygen of the air be removed from these bulbs, other-wise the carbons would be quickly burned out; hence veryhigh vacua are produced in the bulbs with a mercury pump. Fig. 479 represents an Edison lamp. The loop or filamentof carbon, L, is joined at n n to…
Physics
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