critical angle

英語（米国） (en-US) 英語（イギリス） (en-GB)

名詞

(physics) The angle of incidence beyond which light traveling through a medium experiences total internal reflection upon encountering a boundary with a less refractive medium.

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When the incident ray exceeds the critical angle at the glass–air boundary, it undergoes total internal reflection.

詳細

意味（1）

(physics) The angle of incidence beyond which light traveling through a medium experiences total internal reflection upon encountering a boundary with a less refractive medium.

意味（2）

(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.

意味（3）

(architecture) The angle beyond which a ramp or a set of stairs is considered uncomfortable or unsafe.

critical angles （ plural ）