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Samuel Langley

Samuel Langley
Samuel Pierpont Langley, American physicist and astronomer (d. 1906)

Samuel Pierpont Langley was an American aviation pioneer, astronomer and physicist who invented the bolometer. He was the third secretary of the Smithsonian Institution and a professor of astronomy at the University of Pittsburgh, where he was the director of the Allegheny Observatory.

22 August 1834

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