Mirror
A mirror or looking-glass is something that reflects light. One common plane mirror is a piece of special flat glass that a person can look into to see a reflection of themselves or what is behind them.
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Sometimes, a flat piece of metal or the surface of water can act like a mirror.
People can see themselves in a mirror because light comes in and is reflected.
Curved mirrors can have magnification properties, making images appear smaller or larger than their actual size, like a lens does.. They can be concave (curved inward) or convex (curved outward), making the reflected angle and view to be smaller or larger, respectively. Special mirrors can make a person's appearance look quite strange.
Also, in a mirror, writing appears backwards, as a "mirror image" of the original writing.
Mirrors are usually made out of glass with metal on the back, called "silvering" even if the metal is not silver. Modern mirrors use aluminum. The aluminum is applied via vacuum, and will bond directly to cooled glass.
Mirror Media
A first-surface mirror coated with aluminium and enhanced with dielectric coatings. The angle of the incident light (represented by both the light in the mirror and the shadow behind it) exactly matches the angle of reflection (the reflected light shining on the table).
4.5-metre (15 ft)-tall acoustic mirror near Kilnsea Grange, East Yorkshire, UK, from World War I. The mirror magnified the sound of approaching enemy Zeppelins for a microphone placed at the focal point. Sound waves are much longer than light waves, thus the object produces diffuse reflections in the visual spectrum.
Roman fresco of a woman fixing her hair using a mirror, from Stabiae, Italy, 1st century AD
Detail of the convex mirror from the Arnolfini portrait, Bruges, 1434 AD
'Adorning Oneself', detail from 'Admonitions of the Instructress to the Palace Ladies', Tang dynasty copy of an original by Chinese painter Gu Kaizhi, c. 344–405 AD
A sculpture of a lady looking into a mirror, from Halebidu, India, in the 12th century
An 18th century vermeil mirror in the Musée des Arts décoratifs, Strasbourg
A mirror with lacquered back inlaid with four phoenixes holding ribbons in their mouths during the Tang dynasty in eastern Xi'an
A curved mirror at the Universum museum in Mexico City. The image splits between the convex and concave curves.
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