a website collaboration between Science Service and the Smithsonian Institution

1933 - Samuel G. Hibben checking wavelength of light from Sodium vapor lamp as it operates in one of the new Butterfly fixtures

BUTTERFLY

CD 1964100 E&MP27.082

Electric Lighting

1933

Samuel G. Hibben, Westinghouse lighting expert, checking wavelength of light from Sodium vapor lamp as it operates in one of the new Butterfly fixtures which throws the light down, preventing glare  





Original Caption by Science Service
Westinghouse



National Museum of American History

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