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:
“It is critical vision alone which can mitigate the unimpeded operation of the automatic.”
—Marshall McLuhan (1911–1980)
“So much symmetry!
Like the pale angle of time
And eternity.
The great shape labored and fell.”
—N. Scott Momaday (b. 1934)