who worked on invention of the light bulb ?

Answer 1

The first light bulb was created by British inventor Joseph Wilson Swan in 1860, who used carbonised paper filaments in an evacuated glass bulb to create light. Unfortunetly, the light bulb was inefficient and did not have a good life span. Swan created a carbon bulb with a longer life in 1875.

In 1874, two Canadians - Henry Woodward and Mathew Evans - created and patented the first electric light bulb. They later sold the patent to Thomas Edison for $5,000. Edison perfected the electric light bulb and was the first to market the device successfully. In a January 2007 television show in Canada, the light bulb was chosen as #3 on the list of The Greatest Canadian Inventions.

Alexander Nikolayevich Lodygin independently developed an incandescent light bulb in 1874. Many others also had a hand in the development of a practical device for the production of electric light.

Answer 2

THOMAS EDISON