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1937 - Dr. J. W. Marden inspecting an experimental water-cooled high intensity mercury vapor lamp

BRIGHT AS THE SUN

CD 1964049 E&MP27.007

Electric Lighting

1937

Dr. J. W. Marden inspecting an experimental water-cooled high intensity mercury vapor lamp. The center of its arc stream is as bright as the sun. 

 

 

 

 

 

 


1937 - Dr. J. W. Marden inspecting an experimental water-cooled high intensity mercury vapor lamp
[a closer look]

Original Caption by Science Service
Westinghouse



National Museum of American History

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