Critical angle
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 The angle of incidence beyond which light traveling through a medium experiences total internal reflection upon encountering a boundary with a less refractive medium.
- 2 the smallest angle of incidence for which light is totally reflected wordnet
- 3 The angle of attack beyond which an airfoil stalls, experiencing a decrease in lift and increase in drag due to separation of airflow from the upper surface of the airfoil.
- 4 The angle beyond which a ramp or a set of stairs is considered uncomfortable or unsafe.