Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 44
ce in the quality of the gas do not, infact, make any noticeable difference inthe luminosity of the mantles. Weregister gas in terms of cubic feet.Assume, for example, that a 4-light lampconsumes 10 cub. ft. per hour at 25/10thpressure, and that the measured grosscalorific value of the gas is 484… … Pig. 1.—A recent installation with Holophane reflectors in a Church in the GasLight and Coke Cos. district.
Lighting
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