Critical angle can refer to:
- Critical angle (optics) the angle of incidence above which total internal reflection occurs
- Critical angle of attack, in aerodynamics; the angle of attack which produces the maximum lift coefficient
- Critical angle of repose, in engineering; the steepest angle of descent of a slope when the material is on the verge of sliding
Famous quotes containing the words critical and/or angle:
“The critical spirit never knows when to stop meddling.”
—Mason Cooley (b. 1927)
“Modesty is the only sure bait when you angle for praise.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)