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Improvement
Edison's serious incandescent light bulb research began in 1878, filling his first patent later that year.."Improvement in electric light bulbs. -
We have LIGHT!!
The first light bulb was made. -
Electric Lamp
In November 1879, Edison filed a patent for an electric lamp with a carbon filament. -
Testing
Edison and his team of researchers in Edison's laboratory in Melgn park, NJ, tested more than 3,000 designs for bulbs between 1878 and 1880 -
Experiments
His experiments involved the fabrication and testing of many different metal filaments, including platinum. -
Hours
Edison successful tested a filament that burned 13.5 hours. -
New Light
Edison then resorted to a carbon based, high resistance, filaments. -
New Years
By new years he was demonstrating lamps using carbonized cardboard filaments and there were to large crowds at the Menlo park laboratory. -
Bamboo
Edison and his team discovered that a carbonized bamboo filament could last over 1200 hours. -
Dark to Light
Edison worked on many improvements to his signature invention, an invention that literally changed the way we lived after dark.
