The lighting of office buildings and drafting rooms / information compiled by A.L. Powell. (1920)
General Electric Company, Edison Lamp Works · General Electric Co., Edison Lamp Works · leaf 7
E BUILDINGS AND DRAFTING ROOMS light. The other property of the reflector is to send the light in acertain direction, making the lighting system as efficient as possibleby directing the light where most needed. The question of the proper color of walls and ceiling is of suchimportance that it is… … Fig. 5 A Pleasing Semi-indirect Installation in a Medium Sized Office. A somewhat decora-tive type of opalescent glass bowl is employed in this instance. 200-watt MazdaC lamps on 10-ft. centers produce an intensity of over 12 foot-candles.The ceiling is evenly illuminated and the glassware is…
Lighting · Light bulbs · Light fixtures
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