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Lambert's cosine law
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English
Etymology
Named after Johann Heinrich Lambert.
Proper noun
en optics A law stating that the radiant intensity or luminous intensity observed from an ideal diffusely reflecting surface or ideal diffuse radiator is directly proportional to the cosine of the angle between the direction of the incident light and the surface normal.
en cosine emission law Lambert's law Lambert's emission law
Related terms
en Lambertian
en eponyms