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- DictionaryRa·di·ance/ˈrādēəns/
noun
- 1. light or heat as emitted or reflected by something: "the radiance of the sunset dwindled and died"
- 2. the flux of radiation emitted per unit solid angle in a given direction by a unit area of a source.
a measure of the amount of electromagnetic radiation leaving or arriving at a point on a surface. It is the radiant intensity in a given direction of a small element of surface area divided by the orthogonal projection of this area onto a plane at right angles to the direction Le.
Radiance is a type of glowing: either from a light source like the sun or a healthy, beaming person. The sun radiates lights, and bright objects that give off light rays have a quality called radiance. The sun's radiance can be felt the strongest in the afternoon.
5 days ago · a measure of the amount of electromagnetic radiation leaving or arriving at a point on a surface. It is the radiant intensity in a given direction of a small element of surface area divided by the orthogonal projection of this area onto a plane at right angles to the direction. Symbol: Le. Collins English Dictionary.
In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area. Radiance is used to characterize diffuse emission and reflection of electromagnetic radiation, and to quantify emission of neutrinos and other particles.
Radiance definition, radiant brightness or light: the radiance of the tropical sun. See more.
radiance noun. Meaning & use. I. General senses. I.1.a. a1593–. A radiant condition or quality; brightness, light, esp. brilliant or splendid light emitted by an object. In quot. a 1593, in sense 'burning quality' perhaps with admixture of sense I.2. a1593. Thine eyes whose radiance burnes out mine.
warm light shining from something. Definition of radiance noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
