Illuminating Engineering, Volume 64Illuminating Engineering Society., 1969 - Lighting |
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angle application arc tube ballast beam calculations Calif candlepower ceiling cent Chairman Chicago Circle Coefficient color Committee Corp curve Day-Brite Lighting Dekalux diffuse downlights effect efficiency Electric feet field Figure fixtures floodlights fluorescent lamps footcandles footlamberts glare glass halogen lamps Holophane Hotel Illuminating Engineering Society illumination level incandescent industry installation lens light sources lighting design lighting system located louvers lumens lumi luminaires luminance Luminance Coefficients Manufacturing measurements ment mercury lamps metal halide lamps meters mounting height Nela Park Ohio operating outdoor output P. O. Box panels photometric poles Power ratio Reader Information Card recommended reflectance reflector Region Research saccades Section sodium specular square standard surface Sylvania Sylvania Electric Products Table Technical television temperature tion tube units values vertical visibility visual voltage wall watts York