Radiance: Difference between revisions
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imported>David E. Volk m (subpages) |
imported>Niek Sanders (Elaborated terms in defn.) |
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Radiance is a term in [[radiometry]]. It is defined as: | '''Radiance''' is a term in [[radiometry]]. It is defined as: | ||
<math> | <math> | ||
L = \frac{d^2\Phi}{dA d\Omega cos \theta} | L = \frac{d^2\Phi}{dA d\Omega cos \theta} | ||
</math> | </math> | ||
Where <math>\Phi</math> is [[Radiant flux|radiant flux]], <math>A</math> is an area, and <math>\Omega</math> is a [[solid angle]]. | |||
Typical units are <math>[\frac{W}{m^2 sr}]</math> where "sr" means [[Steradian|steradians]]. | Typical units are <math>[\frac{W}{m^2 sr}]</math> where "sr" means [[Steradian|steradians]]. | ||
Latest revision as of 13:43, 3 January 2008
Radiance is a term in radiometry. It is defined as:
Where is radiant flux, is an area, and is a solid angle.
Typical units are where "sr" means steradians.