It is the birthday today of Thomas Alva Edison (1847-1931), born in Milan, Ohio, in 1847. With 1,093 patents to his credit, he changed how we live through his inventions of the incandescent light bulb, the motion picture camera, and the phonograph. Known as the "Wizard of Menlo Park," he commented toward the end of his life, "There is no substitute for hard work."
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