Mirror Shape
Most curved mirrors have a spherical profile. These are the simplest to make, and it is the best shape for general-purpose use. Spherical mirrors, however, suffer from spherical aberration. Parallel rays reflected from such mirrors do not focus to a single point. For parallel rays, such as those coming from a very distant object, a parabolic reflector can do a better job. Such a mirror can focus incoming parallel rays to a much smaller spot than a spherical mirror can.
See also: Toroidal reflectorRead more about this topic: Convex Mirror
Famous quotes containing the words mirror and/or shape:
“A man’s memory is bound to be a distortion of his past in accordance with his present interests, and the most faithful autobiography is likely to mirror less what a man was than what he has become.”
—Fawn M. Brodie (1915–1981)
“Thus when I come to shape here at this table between my hands the story of my life and set it before you as a complete thing, I have to recall things gone far, gone deep, sunk into this life or that and become part of it; dreams, too, things surrounding me, and the inmates, those old half-articulate ghosts who keep up their hauntings by day and night ... shadows of people one might have been; unborn selves.”
—Virginia Woolf (1882–1941)