Electric lights already existed on a streetlight scale when, on this day in 1879, Edison tested the one he’s famous for. Though he didn’t come up with the whole concept, his light bulb was the ...

Thomas Edison used this carbon-filament bulb in the first public demonstration of his most famous invention—the light bulb, the first practical electric incandescent lamp. The light bulb creates light ...

Thomas Edison didn't invent the light bulb. Find out who did. Thomas Edison didn't invent the light bulb, but he did help improve it. Find out who really sparked the lighting revolution.