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Biography
Bush, Vannevar (1890–1974)
Biography
Cockerell, Christopher Sydney (1910–1999)
Biography
Colt, Samuel (1814–1862)
Biography
Cugnot, Nicolas-Joseph (1725–1804)
Biography
De Havilland, Geoffrey (1882–1965)
Biography
Gatling, Richard Jordan (1818–1903)
Biography
Goddard, Robert Hutchings (1882–1945)
Article
Gunsight
Optical instruments that establish an optical line or axis for the purpose of aiming a weapon. The axis includes the observer's eye, a suitable mark in the instrument, and the target. For a pistol, the traditional iron sights employ a rear notch and…
Biography