EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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German-US scientists. German-US physicist Immanuel Estermann (left, 1900-1973), his wife Rosa (born Chwolles, 1902; married 1923), German-US mathematician Richard Courant (1888-1972), and an unidentified graduate student (right). Both Estermann and Courant, who were both Jewish, left Germany in 1933 following Hitler's rise to power. Estermann's major work was on molecular beam techniques with Otto Stern. Courant co-authored the textbook 'Methods of Mathematical Physics' (1924) with David Hilbert. Photographed circa 1932, at Lake Tahoe, in the Sierra Nevada mountains on the California-Nevada border, USA.
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