Doc Ewen

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

by Doc Ewen, © 2003


Slide 20: Detecting the Interstellar Hydrogen Line, 1951

[Mixer connected to horn]

The mixer, in the foreground, is connected to the throat of the horn via a slotted line. [Photo courtesy of Doc Ewen]

Slide 21
Modified on by Ellen Bouton