There’s a lot more to learn about light bulbs. In 1885, the U.S. had an estimated 300,000 carbon filament bulbs. By 1914, there were 88.5 million. In 1945, the market was around 795 million.

1904: Out with the carbon filament and in with the tungsten In 1904, incandescent lamps with tungsten filaments appear on the European market. These bulbs lasted longer, were brighter and more ...

Filament bulbs and other commonly used light sources ... During their study, the UMich team twisted tungsten wires and carbon ...