angle of incidence

noun phrase

: the angle that a line (such as a ray of light) falling on a surface or interface makes with the normal drawn at the point of incidence

Word History

First Known Use

1626, in the meaning defined above

Kids Definition

angle of incidence

: the angle that a ray meeting a surface makes with a perpendicular to the surface at the point of contact

Medical Definition

angle of incidence

noun

: the angle that a line (as a ray of light) falling on a surface or interface makes with the normal drawn at the point of incidence