Until the late 1800s, most people went to bed soon after sunset. They used candles and oil or gas lamps for light. American inventor Thomas Edison changed the way people live when he invented the first practical light bulb. The light bulb was just one of more than 1,000 inventions created by one of the greatest inventors of all time.
LIFE AND CAREER
Thomas Alva Edison was born in
In 1876, Edison started the first industrial research laboratory at
In the 1870s, many inventors were trying to make a practical light bulb. Edison tried hundreds of schemes. Finally he found a filament (thin thread) made of carbon. An electric spark made the filament glow inside a glass tube. Edison’s incandescent lamp was a great success. It burned steadily for more than 40 hours.
Edison wanted people to have electric light in their homes. So he built the first electric power plants.
People liked Edison because he was a down-to-earth man. His favorite saying was, “Genius is 1 percent inspiration and 99 percent perspiration.”