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One of the founding fatheres of the United States. He invented the lightning rod, bifocals, the Franklin stove, a carriage odometer, and the glass 'armonica'.
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The Challenger Expedition made many discoveries to lay the foundation of oceanography.
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Helped subamrines navigate and communicate underwater.
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A Roman citizen of Egypt. He was a mathematician, astronomer, geographer, astrologer, and poet.
