Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 26
«</ u^S» (6) … Figs.—Typical Polak Curves of LightDistribution. (a) 150 candlepower Lamp, Indoor Patternwith Deep Shade.This gives a somewhat concentrated light,especially suitable for Bench Work, the highestcandlepower being given immediately under themantle. (6) 50 candlepower Lamp, Standard Pattern. This shows…
Lighting
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