Hubert, Philip Gengembre, 1852-1925 · New York, C. Scribner's Sons · leaf 241
e of metal or other substance ifheated to incandescence in a glass bulb fromwhich the air has been exhausted will give lightfor a longer or shorter time, according to thecharacter of the apparatus and the degree towhich a perfect vacuum has been effected inthe bulb—this dates from the first half of… … Edscrs Paper CarbonLamp. fill current was passed through the carbonfilament it became luminous and remained so fora short time. This was, perhaps, the first of along line of similar experimentsin which a number of Americanphysicists — Farmer, Draper,Henry, Morse, and Maximamong them — took part.…
Inventors
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