Last Updated
：2025/11/23
rayleigh
Noun
Japanese Meaning
物理学および天文学で用いられる輝度の単位。具体的には、1レイリーは、1平方メートルあたり1秒、1立体角あたり10¹⁰/4π個の量子に相当する夜空の輝度の単位です。
（ plural ）
Quizzes for review
(physics, astronomy) A unit of brightness (of the sky at night) equal to 10¹⁰/4π quanta per square meter per second per steradian
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rayleigh
The observatory measured a sky brightness of 50 rayleigh during the auroral event.
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The observatory measured a sky brightness of 50 rayleigh during the auroral event.
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