Date: circa 1727
: the angle between a refracted ray and the normal drawn at the point of incidence to the interface at which refraction occurs
Date: circa 1727
: the angle between a refracted ray and the normal drawn at the point of incidence to the interface at which refraction occurs
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003