Benjamin FranklinScientistFranklin had steadily extended his own knowledge by study of foreign languages, philosophy, and science. He repeated the experiments of other scientists and showed his usual practical bent by inventing such diverse things as the Franklin stove, bifocal eyeglasses, and a glass harmonica (which he called an armonica; see harmonica2). The phenomenon of electricity interested him deeply, and in 1748 he turned his printing business over to his foreman, intending to devote his life to science. His experiment of flying a kite in a thunderstorm, which showed that lightning is an electrical discharge (but which he may not have personally performed), and his invention of the lightning rod were among a series of investigations that won him recognition from the leading scientists in England and on the Continent.StatesmanDiplomat from PennsylvaniaFranklin held local public offices and served long (1753–74) as deputy postmaster general of the colonies. As such he reorganized the postal system, making it both efficient and profitable. His
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