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Luminance vs Radiance - What's the difference?

luminance | radiance |

As nouns the difference between luminance and radiance

is that luminance is the quality of being luminous while radiance is the quality of being radiant, shining, bright or splendid.

luminance

English

Noun

(wikipedia luminance) (-)
  • the quality of being luminous
  • the luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction, i.e. luminous intensity divided by unit area; measured in stilbs or apostilbs
  • Synonyms

    *photometric brightness

    See also

    *brightness

    radiance

    English

    Noun

    (wikipedia radiance)
  • the quality of being radiant, shining, bright or splendid
  • Girt with omnipotence, with radiance crowned. — Milton.
  • (physics) the flux of radiation emitted per unit solid angle in a given direction by a unit area of a source