Definition of irradiance
1 : radiance 1
2 : the density of radiation incident on a given surface usually expressed in watts per square centimeter or square meter
Recent Examples of irradiance from the Web
On Thursday afternoon, the SDO saw something much more simple than solar irradiance fluctuations or extreme ultraviolet variability — the moon blocking out the sun in a solar eclipse only visible from the satellite.
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First Known Use of irradiance
Medical Definition of irradiance
: the density of radiation incident on a given surface usually expressed in watts per square centimeter or square meter
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