Irradiance: Difference between revisions
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Irradiance is a term in radiometry. It is defined as the change in [[Flux|flux]] over the change in area: | Irradiance is a term in [[Radiometry|radiometry]]. It is defined as the change in [[Flux|flux]] over the change in area: | ||
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Revision as of 14:15, 18 September 2007
Irradiance is a term in radiometry. It is defined as the change in flux over the change in area:
Typical units are []. Irradiance typically varies as a function of wavelength.
The term "exitance" is used when talking about the irradiance leaving a surface. (E.g. the exitance from an area source).