Willoughby M. Cady

Willoughby M. Cady, head of the fundamental development group at North American Aviation Corporation, died on June 29th in Huntington Memorial Hospital, Pasadena, California, at the age of forty‐six. Dr. Cady received his PhD from Harvard in 1932 and subsequently studied at Caltech where he was a National Research Fellow. He taught physics at Clark and Cornell Universities and at the University of Washington. He had been head of the physics division at the Naval Ordnance Test Station during the three years before he joined the North American staff in 1949. His research was chiefly in the fields of spectroscopy, guided missiles, and applications of infrared radiation. Dr. Cady was a fellow of the Amercan Physical Society and of the Optical Society of America; he was also a member of the American Association of Physics Teachers, the American Association for the Advancement of Science, and various other organizations.