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
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscience, bookyear1921
