If you mean Glance Angle instead of Galnce angle, then it is the angle made by a light ray incident on (falling on) a surface and the line perpendicular to the surface (called the normal). It is generally called Angle of incidence
Saloni Rakholiya
Last Activity: 9 Years ago
its GLANCE ANGLE: IT is the angle between a ray incident on a plane surface and the surface, as of a beam of electrons incident on a crystal; the complement of the angle of incidence.