Lambert's cosine law

Lambert's cosine law: The mathematical statement that the radiance of certain idealized optical sources is directly proportional to the cosine of the angle--with respect to the direction of maximum radiance--from which the source is viewed. Note: Lambert's cosine law may also apply to certain idealized diffuse reflectors. Synonyms cosine emission law, Lambert's emission law.

This HTML version of FS-1037C was last generated on Fri Aug 23 00:22:38 MDT 1996