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On this day, October 21, 1879,Thomas Edison invented a workable electric light at his laboratory in Menlo Park, New Jersey. Using a filament of carbonized thread, Thomas Edison tested the 1st electric light bulb, which lasted 13½ hours before burning out. Now we are phasing the filament light bulb out..
On this day, October 21, 1879,Thomas Edison invented a workable electric light at his laboratory in Menlo Park, New Jersey. Using a filament of carbonized thread, Thomas Edison tested the 1st electric light bulb, which lasted 13½ hours before burning out. Now we are phasing the filament light bulb out..