Word: modulus
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Dates: during 1950-1959
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...near, Von Karman turned more and more to military design. As adviser to the U.S. Army Air Forces, he worked on jet engines, rocket motors, high-speed wind tunnels. Most of his work was theoretical. The principles that bear his name (e.g., the Karman Vortex Trail, the Karman double-modulus theory of columns) have no meaning for laymen (or for most airmen), but modern aerodynamics is based solidly on them...