angle of refraction

noun Physics, Optics.

1. the angle between a refracted ray and a line drawn normal to the interface between two media at the point of refraction.

noun

1. the angle that a refracted beam of radiation makes with the normal to the surface between two media at the point of refraction

1. The angle formed by the path of refracted light or other radiation and a line drawn perpendicular to the refracting surface at the point where the refraction occurred.