COSINE LAW


Meaning of COSINE LAW in English

noun

: either of two laws of radiation:

a. : the radiant flux emitted in a given direction from a given small area of a perfectly diffusing surface varies as the cosine of the angle of emission

b. : the irradiation by parallel rays falling on a surface varies as the cosine of the angle of incidence

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.