Why did Thomas Edison invented the light bulb?

Answer 1

Edison did not invent the first electric light bulb, but instead invented the first commercially practical incandescent light. He therefore just improved on other peoples work.

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Thomas Edison invented the light bulb because people needed it to see in the dark and so he could become a successful man.

Answer 2

Thomas Edison invented the light bulb to provide a reliable and affordable source of lighting for homes and businesses. He aimed to create a product that would improve the quality of life for people by increasing productivity and safety, and to create a new market for his electrical power distribution system.