This is a video recording of Francis Jehl discussing his experience working with Thomas Edison in 1879 and helping to make the first practically viable light bulb in history.

It is primarily thanks to his incredible demonstration on a chilly New Year's Eve in 1879. Edison revealed a creation that ..

he created the first successful 'incandescent filament electric lamp' - the light bulb. He gave public demonstrations of this scientific breakthrough in late 1878 and early 1879, using ...