Definition of radiance in English:

radiance

Line breaks: ra¦di|ance
Pronunciation: /ˈreɪdiəns
 
/

noun

[mass noun]
  • 2 Physics The flux of radiation emitted per unit solid angle in a given direction by a unit area of a source.
    More example sentences
    • The downward radiance measured by the infrared interferometer is a combination of thermal emission by atmospheric water vapor and by the cloud ice mass.
    • This irradiance and the radiance in the opposite direction were then inserted into equation to calculate the ideal reflectance.
    • The effect is most prominent at shallow depths, where the light field is usually asymmetric, due to highly directional and intense solar radiance.

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Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little