Doc Ewen

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

by Doc Ewen, © 2003


Slide 5: Detecting the Interstellar Hydrogen Line, 1951

[van de Hulst 1944 paper]

English summary of van de Hulst's 1944 colloquium paper, published in Nederlands Tidschreift Natuurkunde, December 1945. [Photo courtesy of Doc Ewen]

Slide 6
Modified on by Ellen Bouton