Doc Ewen

Doc Ewen: The Horn, HI, and Other Events in US Radio Astronomy

by Doc Ewen, © 2003


Slide 33: Detecting the Interstellar Hydrogen Line, 1951

[Ewen and Purcell]

Doc Ewen and Ed Purcell with the horn, at the dedication of the Harvard 60ft antenna in 1956. [Photo courtesy of Doc Ewen]

Slide 34
Modified on by Ellen Bouton