Fundamentals of Industrial Lighting |
Common terms and phrases
30 footcandles amount of light angle areas ballast beam Bipin brightness ratios bulb candlepower distribution curve cent CHECKBACK coefficient of utilization color comfort continuous rows contrast cool white cost Data Section desk diffuse DIFFUSE REFLECTION direct glare dust-tight efficiency equipment example eyes Figure filament fixtures required FLOOD floor fluorescent fixtures fluorescent lamps foot footcandle level FOOTLAMBERT give glass high-bay incandescent lamps indirect industrial fixtures Industrial Fluorescent industrial lighting installation layout lengthwise lens light meter light output light source lighting fixtures louvers lower lumen output maintenance factor MATTE SURFACE maximum spacing Medium mercury lamps Mogul mounting height number of fixtures operation PAR lamps produce Projector Lamps reading Reading F.C. reduce reflected glare reflector retina room ratio SEMI-DIRECT shown in Fig slimline SPECULAR REFLECTION spot standard candle Step supplementary lighting surface switch Table B-1 task tion troffers tube two-lamp type of fixture usually vision WATT WATT UNITS wattage wavelengths workers