Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 25
aratively low level. Naturally, Fig. 2 shows a view of the gym-nasium. The area of this room is,roughly, 1,570 square feet. It is lightedby ten 100-watt tungsten lamps in I-type Holophane reflectors, placedon the ceiling. The walls are dark redin colour, and do not give much assist-ance to the… … IlG. 2.—Gyiuiiasiuiu lislitiHl by ten Tungsten Lamps and Hulophaue Eeflectors. Theconsumption is about 07 watts per square foot, the illumination at the floor level from1 to r.j foot-candles. it is only an approximate rule, someallowance being necessary for the typeof shade used and the lightness…
Lighting
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