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1939 - forty-four 4-foot 40-watt daylight fluorescent lamps, twenty-five to fifty times as much illumination as many office people attempt to see by

200 FOOTCANDLES OF FLUORESCENT LIGHTING 

CD 1963089 E&MP 25.027

Electric Lamps

OCT 1939

Two hundred footcandles of diffused light -- twenty-five to fifty times as much illumination as many office people attempt to see by -- aided this group when it met recently in the "round table room" of General Electric Institute at Nela Park, Cleveland.

Making possible indoors this newest challenge to seeing conditions as found outdoors is the experimental fluorescent fixture shown here on the ceiling.

Behind and "egg-crate" type of louver system, approximately eight feet square, are forty-four 4-foot 40-watt daylight fluorescent lamps. Reflectors used in this experimental fixture are made of Alzak aluminum.

The committee is composed of executives in the automotive, electrical, and highway safety fields.


Original Caption by Science Service
General Electric



National Museum of American History

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