A mirror is an object that reflects light
in such a way that, for incident light in some range of wavelengths, the
reflected light preserves many or most of the detailed physical characteristics
of the original light. This is different from other light-reflecting objects
that do not preserve much of the original wave signal other than color and
diffuse reflected light.
The
most familiar type of mirror is the plane mirror,
which has a flat screen surface. Curved mirrors are also used, to producemagnified or diminished images or focus light or
simply distort the reflected image.
Mirrors
are commonly used for personal
grooming or admiring
oneself (in which case the archaic term looking-glass is sometimes still used decoration,
and architecture. Mirrors are also used in scientific apparatus such astelescopes and lasers, cameras, and industrial
machinery. Most mirrors are designed for visible light;
however, mirrors designed for other wavelengths of electromagnetic radiation are also used.
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