Word: nitrogen
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1950
Sort By: most recent first
(reverse)
...look around the laboratory and work on any problem which interested him. On one project he worked for three years, introducing various gases into an incandescent lamp bulb just to see what would happen. In 1912 he made his first important discovery: an electric bulb filled with nitrogen was more efficient than the so-called "vacuum" bulb, since the gas retards evaporation of the tungsten filament. It displaced the old vacuum bulb, saved users of electricity a billion dollars a year...