Family background, early life in Brooklyn and Detroit, high school; undergraduate studies at University of Michigan, switch from mathematics to physics. Graduate work at Michigan, 1931-1933; thesis research combines quantum mechanics and infrared spectroscopy. Difficulty finding academic job during Depression; works for Lowell Observatory while at Michigan, 1933-1936; devises long-path absorption cell, research in infrared spectrum of earth's atmosphere. Joins faculty of Johns Hopkins University (Gerhard Dietz), 1935-1936. To Lowell Observatory (Roger Lowell Putnam, V. M. Slipher, E. C.