Wiktionary
angles of incidence
n. (angle of incidence English)
Usage examples of "angles of incidence".
You get your angles of incidence by observation of a prism, then confirm the angles in the sky by more observation.
In the huge dome above them, living rays of mysterious light appeared to cross and re-cross at all angles of incidence, weaving a bright, ever-changing web that dazzled the eye.
Miles considered angles of incidence and angles of reflection, his thoughts bouncing at the speed of light back and forth between the mirrored walls of his empty skull.