Modern lighting : examples of its successful application in the industries. (1920)
National Lamp Works of General Electric Co. Engineering Department. · National Lamp Works of General Electric Co. Engineering Department · leaf 39
ted should be easyto maintain and satisfactory in appear-ance. These requirements are best satisfiedby the use of some form of totally in-direct or dense semi-indirect liohtina the ceiling be unit, whenever me ceumg can oe sofinished that it will reflect a fair propor-tion of the light reaching it.… … m Tfl
Electric lighting · Interior lighting fixtures, lamps, and ballasts
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