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1937 - Dr. J. W. Marston inspects a new experimental water-cooled, high-intensity mercury vapor lamp

MERCURY VAPOR LAMP

CD 1964068 E&MP27.030

Electric Lighting

1937

Very efficient as a source of light is the excited vapor of a gas. Above Dr. J. W. Marston of the Westinghouse Co. inspects a new experimental water-cooled, high-intensity mercury vapor lamp. The blazing center of its arc steam is as bright as the sun. 


Original Caption by Science Service
Westinghouse



National Museum of American History

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