Doc Ewen

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

by Doc Ewen, © 2003


Slide 26: Detecting the Interstellar Hydrogen Line, 1951

[Doc Ewen and receiver]

Doc Ewen and the receiver at the time of detection. [Photo courtesy of Doc Ewen]

Slide 27
Modified on by Ellen Bouton