Noun
the angle between a refracted ray and a line perpendicular to the surface between the two media at the point of refraction
Source: WordNetLight enters medium 2 from medium 1 via point O. is the angle of incidence, is the angle of refraction. Source: Internet
This implies that, while the surfaces of constant real phase are planes whose normals make an angle equal to the angle of refraction with the interface normal, the surfaces of constant amplitude, in contrast, are planes parallel to the interface itself. Source: Internet
Consequently, so are the angle of refraction and the wave-vector. Source: Internet
Part of the wave is transmitted and part is reflected, with the ratio depending on angle of incidence and the angle of refraction. Source: Internet
Since the velocity is lower in the second medium (v 2 < v 1 ), the angle of refraction θ 2 is less than the angle of incidence θ 1 ; that is, the ray in the higher-index medium is closer to the normal. Source: Internet