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.

earning it the title of the longest-burning light bulb in history. Originally a 60-watt carbon filament bulb, the light was Read More ...