Thomas Edison
In 1869, because of the successes of his telegraph inventions, Edison decided to become a full-time inventor. Edison built his laboratory in Menlo Park, New Jersey in 1876. He created devices like the Edison Universal Stock Ticker, and a carbon transmitter for telephones. But one of his more memorable inventions was the phonograph that enabled users to record and playback sounds. Did you find the 3 changes? Click to see the next puzzle.
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In 1879, Thomas Edison unveiled his biggest invention, the first commercially feasible light bulb. Others had created rudimentary light bulbs, but would go out after a couple of hours. On New Year's Eve of 1879, Edison held a public demonstration of his electric light bulb, and spectators were amazed. The invention of the light bulb caused a huge demand for electricity. |
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