Thomas Edison: Henry Woodward

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Henry Woodward


On July 24, 1874, five years before Thomas Edison's U.S. patent, two
Canadians, Henry Woodward, a medical student from Toronto, Ontario and his
friend Mathew Evans, a hotelkeeper, patented the first incandescent lamp
with an electric light bulb. They understood that carbon was a conductor and
made light inside a bulb by sending electricity through a filament made of carbon.

They did not have enough money to develop their invention for people to use
and sold a share of their patent to Thomas Edison who was also struggling
with his own light bulb experiment.

Modern light bulbs still work the same way as the ones invented by Woodward
and Evans.

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