Radio wave propagation

Work at Lebedev Physics Institute; study of radio-wave propagation interrupted by World War II; returns to Institute after being wounded, begins study of nonlinear radiophysics; synchrotron radiation in microwave region; starts accelerator group (Nicolai Basov)i switches to microwave spectroscopy (Charles Townes, Walter Gordy), 1950; ruby crystals (Dr. Manenkov); Prokhorov proposes use of interferometer; gas-dynamic CO₂ laser, 1966. Commercial application of lasers in USSR future laser applications.

Reviews Aarons' (b. October 3, 1921) career at AFCRL as a research physicist (1946-55), Chief of Radio Astronomy Branch (1955-72), and at AFGL as Chief of the Trans-ionospheric Propagation Branch and Senior Scientist at the Space Physics Lab (1972-81). Topics discussed include significant aspects of his role in the use of V-2s by Marcus O'Day for upper atmosphere research; his contact with O'Day and Menzel and the establishment of Sac Peak; the research mission of AFCRL; AFCRL's early interest in solar studies; and a comparison of present day research activities at AFGL and NRL.