Science for beginners . Fig. 44.—A fluted glass re-flector. Used on gas and elec-tric lamps. 53 THE PRODUCTION AND USE OF LIGHT it with the diffused light which passes through the frostedbowl (Fig. 45 ray a, a, a, a, and b, b, b, b). A sufficient. Fig. 45.—Diffused light from tungsten lamp with frosted bowl andfluted glass reflector. amount of light to illuminate the ceiling of the room passes through the fluted glass light is also diffused, a, a,a, a, and V, V, b, V, Fig. 45. 6o. Indirect Lighting.—Thebest artificial lighting is indirectlighting. In the indirect systemnone of t
Science for beginners . Fig. 44.—A fluted glass re-flector. Used on gas and elec-tric lamps. 53 THE PRODUCTION AND USE OF LIGHT it with the diffused light which passes through the frostedbowl (Fig. 45 ray a, a, a, a, and b, b, b, b). A sufficient. Fig. 45.—Diffused light from tungsten lamp with frosted bowl andfluted glass reflector. amount of light to illuminate the ceiling of the room passes through the fluted glass light is also diffused, a, a,a, a, and V, V, b, V, Fig. 45. 6o. Indirect Lighting.—Thebest artificial lighting is indirectlighting. In the indirect systemnone of the rays from the lightsource is permitted to fall directlyupon the surface to be lamps are placed within a re-flector which diffuses and reflectsthe light against the ceiling ( and 47), which in turn reflectsthe light downward to the surfaces which are to beilluminated. The efficiency of such lighting depends
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
