critical angle
From Wiktionary, the free dictionary
English
Noun
critical angle (plural critical angles)
- (optics) The angle of incidence beyond which light traveling through a medium experiences total internal reflection upon encountering a boundary with a less refractive medium.
- (aviation) 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.
- (architecture) The angle beyond which a ramp or a set of stairs is considered uncomfortable or unsafe.
Synonyms
(angle of attack):
Translations
smallest angle of incidence
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See also
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