WordNet
incidence angle
n. the angle that a line makes with a line perpendicular to the surface at the point of incidence [syn: angle of incidence]
Usage examples of "incidence angle".
The fact that the Topide system was more than 33000 light-years from the central world of Arkon was not the main difficulty but the fact that the incidence angle against the interference screens had to be determined within hyperspace.