B.S. CHANDRASEKHAR, DEPARTMENT OF PHYSICS, UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN, COURTESY AIP EMILIO SEGRE VISUAL ARCHIVES / SCIENCE PHOTO LIBRARY B.S. CHANDRASEKHAR, DEPARTMENT OF PHYSICS, UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN, COURTESY AIP EMILIO SEGRE VISUAL ARCHIVES / SCIENCE PHOTO LIBRARY
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US physicists Kenneth Hugh Nordsieck (born 1946, left, with balloon), Arnold Theodore Nordsieck (1911-1971, centre), and Frederick Seitz (1911-2008) at the annual Physics Department picnic, Urbana, Illinois, USA. Arnold Nordsieck is best known for his work with Felix Bloch on the infrared problem in quantum electrodynamics. He developed the inertial electrostatic gyroscope (ESG) used as part of the inertial navigation system of nuclear submarines that allows them to remain underwater without having to surface to ascertain their location. Seitz is best known for helping to pioneer the new field of solid-state physics, publishing 'The Modern Theory of Solids' (1940). Kenneth Nordsieck is Arnold Nordsieck's son and is currently (as of 2017) an astrophysicist at the University of Wisconsin-Madison Department of Astronomy. Photographed circa 1953.
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