Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 242
should be capable of beingreadily cleaned and should collect aslittle dust as possible ; and if possible, The advantages claimed for thereflector may be sunnnarised as follows :— 1. The scientific light reflectingproperty of prismatic glassware isincreased by the metal reflecto. 2. It is easy to… … Cat. Xo. «19. Characteristic Light Distribution Curve. Lamp alone. Lamp with Xo. 819. This reflector gives four times the rated candle-power under the lamp. the deposit of a certain amoimt of dustshoidd not materially impair itsefficiency. In the new Holophane IndustrialReflector, illustrated…
Lighting
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