jsanders said:
Actually Edison's real contribution was inventing inventing.
actually Europe invented inventing, but then it would depend on how one defines invention
Edison stole other people ideas
The first electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This is called an electric arc.
Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England.
Think back. Who invented the light bulb? Thomas Edison? Right?
WRONG
In 1875, Edison purchased half of a Toronto medical electrician's patent to further his own research. That researcher was named James Woodward.
Woodward and a colleague by the name of Matthew Evans, described in the patent as a "Gentleman" but in reality a hotel keeper, filed a patent for the Woodward and Evan's Light on July 24, 1874.
Working at the Morrison's Brass Foundry on Adelaide St. West in Toronto, they built the first lamp with a shaped rod of carbon held between electrodes in an glass bulb filled with nitrogen.
Woodward and Evans were treated as cranks and subject to much public ridicule. "Who needs a glowing piece of metal!!" They attempted, with very little success, to form a company to raise money to refine and market their invention. (Where is the federal government when you really need them?)
In 1876, Woodward obtained a U.S. patent on his electric lamp and, in 1879, Edison considered it sufficiently important to completely buy out the patent from Woodward, Evans, and all their Canadian partners. Woodward sold a share of his Canadian patent to Thomas Edison in 1885.
Thus the electric light bulb became American.