Radiance - Definition
radiance
n 1: the amount of electromagnetic radiation leaving or arriving
at a point on a surface [syn: radiance, glow,
glowing]
2: the quality of being bright and sending out rays of light
[syn: radiance, radiancy, shine, effulgence,
refulgence, refulgency]
3: an attractive combination of good health and happiness; "the
radiance of her countenance"