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irradiance

/ɪˈreɪdɪəns/

noun
- 1. the flux of radiant energy per unit area (normal to the direction of flow of radiant energy through a medium).
- 2. the fact of shining brightly. literary
Scrabble Points: 13
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More definitions, origin and scrabble points

Irradiance
In radiometry, irradiance is the radiant flux received by a surface per unit area. The SI unit of irradiance is the watt per square metre (W⋅m −2 ). The CGS unit erg per square centimetre per second (erg⋅cm −2 ⋅s −1) is often used in astronomy. Irradiance is often called intensity, but this term is avoided in radiometry where such usage leads to confusion with radiant intensity. In astrophysics, i... Wikipedia
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