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1937 - Dr. John W. Marden, Westinghouse research engineer, and a laboratory assistant, shield their eyes from the brightness of this tiny 1000-watt lamp, which is expected to revolutionize photoengraving, blue printing and searchlight practice

VEST POCKET SUN

CD 1964057 E&MP27.017

Electric Lighting

1937

A “cool” mercury vapor arc lamp, capable of producing a brilliance one-fifth as dazzling as the sun’s, has just been perfected for commercial use by the Lamp Division of the Westinghouse Electric & Manufacturing Company.

Dr. John W. Marden, Westinghouse research engineer, and a laboratory assistant, shield their eyes from the brightness of this tiny 1000-watt lamp, which is expected to revolutionize photoengraving, blue printing and searchlight practice.  


Original Caption by Science Service



National Museum of American History

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