Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 265
gthe buUseye lines for the four sets oftargets are shown in Fig. 2. It will beseen that in both ranges the upper rowof targets is better lighted than the lowerone, and that the metal reflectors give amarked advantage in the matter of uni-formity of illumination. The curvesA and B could, without… … Fig. 2.—National Reserve Rifle Club Ranges. Curve A = Illumination on upper targets of right-hand range.,. B= „ lower „ ,, „ C= ., upper ,, left-hand „ ., D= .• lower light from the floor lamps from reachingthe upper targets. There are five lampsin each row, varying from 40 to 60 watts,spaced two…
Lighting
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