When was the eletric light bulb invented?

Answer 1

It depends what you mean by "lightbulb"; Sir Humphrey Davy demonstrated the first electric filement light in 1802, the first practical lighting system - including the bulb, was developed by Edison around 1880, but many other people were demonstrating light bulbs around that time. Edison deserves the credit for creating an entire system for generating and distributing electricity - without that, the lightbulb would be pretty useless.

Answer 2

The first commercially viable light bulb was produced by Thomas Edison in 1879. It lasted longer, worked better, and was integrated with other components in order to make it useful on a larger scale.

But it was only an improvement on existing light bulbs. In fact, his first incandescent light patent specifically says "improvement on electric lights".

The first known actual incandescent light was invented by Humphry Davy in 1802, but it wasn't literally a "bulb".

The first well-documented "light bulb", an incandescent light with filament in a glass enclosure that doesn't contain normal air, was invented by Warren de la Rue in 1840, a platinum filament in a vacuum tube.

Answer 3

In the 1800's

Answer 4

July 24, 1874