Hubert, Philip Gengembre, 1852-1925 · New York, C. Scribner's Sons · leaf 243
e of metal or other substance ifheated to incandescence in a glass bulb fromwhich the air has been exhausted will give lightlor 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… … Edisons Paper CarbonLamp. ful current was passed through the carbonfilament it became luminous and remained so fora short time. This was, perhaps, the first of a long line of similar experimentsin which a number of Americanphysicists--Farmer, Draper,Henry, Morse, and Maximamong them - - took part.…
Inventors
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