Friday, February 11, is Thomas Edison's birthday. Probably the greatest inventor of modern time, Edison accumulated over 1000 patents, over twice that of other prolific inventors. His inventions include the light bulb, motion picture camera, phonograph, stock ticker, mechanical vote recorder, electric car battery, and electrical power. Edison's ingenuity has profoundly influenced people's everyday lives and serves as inspiration to aspiring engineers and inventors.
What was Thomas Edison's favorite invention?