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Many people have flown in an airplane or are going to at some point in their lifetime, but most people do not know how the airplane came about or about aviation history at all. Samuel P. Langley played a very big part in the history of aviation. Although Langley ....

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.... and St. Louis, Missouri. After this, he went back to Boston and received an assistantship at the Harvard Observatory. He later went on to teach mathematics at the U.S. Naval Academy in Annapolis, MD. In 1867, when Langley was 33 years of age, he took the position of a director at the Allegheny Observatory. He then became a professor of physics and astronomy at the University of Pittsburgh. His main interest was solar activity and the effect that it had on the weather. In 1878, Langley invented the Bolometer, which is a radiant-head detector that is sensitive to the differences in temperature to onehundred-thousandth of a degree. This invention ....