"Carbon filament bulbs were the first commercially viable electric light bulbs to hit the consumer market in 1882.[1] In 1904, a tungsten filament was shown to be more efficient and longer lasting than the carbonized bamboo filament used previously.[1] The introduction of a neutral gas to the glass envelope (or bulb) also helped to improve lifespan and brightness of the bulb."
https://en.wikipedia.org/wiki/Edison_light_bulb
--
A strange game. The only winning move is not to play. How about a nice game of chess? - Wargames