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Thomas Alva Edison
Thomas Alva Edison was the most prolific inventor in American history. He amassed a record 1,093 patents covering key innovations and minor improvements in wide range of fields, including telecommunications, electric power, sound recording, motion pictures, primary and storage batteries, and mining and cement technology. As important, he broadened the notion of invention to encompass what we now call innovation-invention, research, development, and commercialization-and invented the industrial research laboratory. Edison's role as an innovator is evident not only in his two major laboratories at Menlo Park and West Orange in New Jersey but in more than 300 companies formed worldwide to manufacture and market his inventions, many of which carried the Edison name, including some 200 Edison illuminating companies.
Leonardo di ser Piero da Vinci
Leonardo was born on April 15, 1452, at Anchiano, a hamlet near the Tuscan hill town of Vinci, in the lower valley of the Arno River in the territory of Florence. He was the illegitimate son of Ser Piero da Vinci, a Florentine notary, and Caterina, a peasant. Little is known about his early life, which has been the subject of historical conjecture by Vasari and others. |
