Physics, Optics.
the angle between a refracted ray and a line drawn normal to the interface between two media at the point of refraction. See diag. under refraction .
[ 1765-75 ]
Physics, Optics.
the angle between a refracted ray and a line drawn normal to the interface between two media at the point of refraction. See diag. under refraction .
[ 1765-75 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012