Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 25
nger that of the earlydays—the simple light value given by alamp in a given directioji. The moderncase must provide for exjiressing luminousvalues given by lamps in combinationwith reflectors or glassware, distributeddirectly or indirectly via the ceiling,, orpart directly and part indirectly as… … Fig. 11.—Light distribution from Strela Fitting, with Holophane Refractor,showing special character of light distribution desirable for street lighting—a contrast with the distribution curve shown in Fig. 10, and illustratingthe extreme variations to be dealt with in lighting problems. objects to…
Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
