Radiance

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This editable Main Article is under development and subject to a disclaimer.

[edit intro]

Radiance is a term in radiometry. It is defined as:

L=d2ΦdAdΩcosθ

Where Φ is radiant flux, A is an area, and Ω is a solid angle.

Typical units are [Wm2sr] where "sr" means steradians.