单词 | critical angle |
释义 | critical angle in British Englishnoun 1. the smallest possible angle of incidence for which light rays are totally reflected at an interface between substances of different refractive index 2. another name for stalling angle critical angle in American English1. Optics the smallest possible angle of incidence at which light rays are totally reflected 2. Aeronautics that angle of attack at which the flow of air around an airfoil suddenly changes, with an abrupt reduction in lift and an increase of drag see also stall2 (sense 6) |
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