Samuel Pierpont Langley
Samuel Pierpont Langley was born on August 22, 1834. See ranking, bio blurb, and everyone else born that day.
About Samuel Pierpont Langley
Samuel Pierpont Langley (August 22, 1834 – February 27, 1906) 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.