|
Definition of Rayleigh
1. Noun. English physicist who studied the density of gases and discovered argon; made important contributions to acoustic theory (1842-1919).
Definition of Rayleigh
1. Noun. (physics astronomy) A unit of brightness (of the sky at night) equal to 1010/4? quanta per square meter per second per steradian ¹
¹ Source: wiktionary.com