Science for beginners . Fig. 42.—Diffused lightfrom the frosted bowl of atungsten lamp. Fig. 43.—Diffused light from theopal glass globe of the gas mantlelamp. glass globe. In each case, the pencil of parallel rays A isbroken up into the diffused rays a, a, a, and a, while thepencil of parallel rays B isbroken up into diffused raj^s h,~b, ~b, and b. On the other handthe direct rays C pass throughthe clear glass of the upper por-tion of the tungsten lamp with-out being diffused. This directlight from the upper portion ofthe tungsten lamp is not per-mitted, however, to escape intothe room. The l
Science for beginners . Fig. 42.—Diffused lightfrom the frosted bowl of atungsten lamp. Fig. 43.—Diffused light from theopal glass globe of the gas mantlelamp. glass globe. In each case, the pencil of parallel rays A isbroken up into the diffused rays a, a, a, and a, while thepencil of parallel rays B isbroken up into diffused raj^s h,~b, ~b, and b. On the other handthe direct rays C pass throughthe clear glass of the upper por-tion of the tungsten lamp with-out being diffused. This directlight from the upper portion ofthe tungsten lamp is not per-mitted, however, to escape intothe room. The lamp is sur-rounded by a fluted glass reflector (Fig. 44). This reflectorreflects the larger portion of the rays as diffused light, mixing. 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
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
