A hollow sphere for measuring the luminous flux of a light source. The inside is coated with white paint that diffuses light, and measurements are made by placing a light source in the center of the sphere. Source: About Shogakukan Digital Daijisen Information | Legend |
光源の光束などを測定するための中空の球。内側に光を拡散する白色塗料が塗布され、球の中心に光源を設置して測定する。
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