mirror


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mir·ror

(mir'ŏr),
A polished surface reflecting the rays of light reflected from objects in front of it.
[Fr. miroir, fr. L. miror, to wonder at]
noun An archiving device written to more than one hard disk simultaneously, so that if one disk fails, the computer continues to function without loss of data
verb To maintain an exact copy of a file or database

mirror

Informatics noun An archiving device written to more than one hard disk simultaneously, so that if one disk fails, the computer continues to function without loss of data verb To maintain an exact copy of a file or database. See FTP, Web Paranormal See Mind mirror.

mir·ror

(mir'ŏr)
A polished surface reflecting the rays of light reflected from objects in front of it.

mirror

A surface capable of reflecting light rays and forming optical images. Such surfaces are smooth or polished, made of highly polished metal, or a thin film of metal (e.g. aluminium) on glass, quartz or plastic. Object distance l and image distance l′ relate to the focal distance f or the radius of curvature r of the mirror, as follows
2/r represents the refractive power of the mirror, in air. If the medium that contains the incident and reflected rays is n, the power becomes F = 2n/r and the focal length, f = r/2n (Fig. M12). See focal length; fundamental paraxial equation; catadioptric system.
back surface mirror A mirror which reflects from the back surface of a refracting layer, usually glass. See front surface mirror.
concave mirror A mirror with a spherical concave surface forming an erect, magnified, virtual image when the distance from the mirror is less than the focal distance and an inverted real image when the object distance is greater than the focal distance (Fig. M12).
convex mirror A mirror with a spherical convex surface forming a virtual, erect and diminished image (Fig. M12).
front surface mirror A mirror that reflects directly from its front surface. The advantages of this type are that, unlike back surface mirrors, there is no chromatic effect as the glass is not used optically, therefore ultraviolet rays can be used which would otherwise be absorbed in the glass and there is no ghost reflection from the front surface. However, these mirrors can be easily scratched and the coating may tarnish. Often a coating of silicon monoxide is evaporated on top of the surface, but this causes a loss of reflectivity. See ghost image; back surface mirror.
plane mirror A mirror whose surface is plane and forms a virtual image of the same size as the object. Object and image distances are equal.
semi-silvered mirror See beam splitter.
mirror writing Writing backward, Latin letters being written from right to left and the details of the letters reversed. The writing thus appears normal when viewed in a mirror. Syn. retrography.
Fig. M12 Image of an object O formed in A, a concave mirror and B, a convex mirror. Four rays are drawn in each case for completeness, but two would suffice (C, centre of curvature; F ′, focal point; f ′, focal length; l and l ′, object and image length; r , radius of curvature)enlarge picture
Fig. M12 Image of an object O formed in A, a concave mirror and B, a convex mirror. Four rays are drawn in each case for completeness, but two would suffice (C, centre of curvature; F′, focal point; f′, focal length; l and l′, object and image length; r, radius of curvature)

mir·ror

(mir'ŏr)
A polished surface reflecting the rays of light reflected from objects in front of it; particularly useful in visualizing structures in the oral cavity.
References in classic literature ?
Don Quixote helped him to rise, with the assistance of his squire Tom Cecial; from whom Sancho never took his eyes, and to whom he put questions, the replies to which furnished clear proof that he was really and truly the Tom Cecial he said; but the impression made on Sancho's mind by what his master said about the enchanters having changed the face of the Knight of the Mirrors into that of the bachelor Samson Carrasco, would not permit him to believe what he saw with his eyes.
[USPRwire, Wed Sep 04 2019] Global Blind Spot Mirror Market: Overview Safety has always been a top priority for automobile manufacturers.
[ClickPress, Wed Sep 04 2019] Global Blind Spot Mirror Market: Overview Safety has always been a top priority for automobile manufacturers.
PS10, Debenhams WATERCOLOUR COMPACT MIRROR: Including a normal mirror and a close-up mirror, this cute compact has a pink, blue and white watercolour design.
Contract notice: framework contract 1 / biud / w0090 on the supply of mirrors
In the last stage, a worker has to test the fitness of the mirrors manually which is done by rotating the mirror on its axis.
Take the paper to a mirror. Hold it facing the mirror, away from you.
Mirrorvue is a smart vanishing mirror television which completely turns into a mirror when the tv is turned off.
Utility Cane Mirror, PS145, Oliver Bonas (available from April) With attractive coral trimming that's reminiscent of decors in a holiday home - or luxury hideaway in the Caribbean - with the onset of spring, this colourful addition is surely one of the simplest ways to refresh a hallway.
She said she just bought a dresser with a mirror which faces the bed.
From Debenhams, this white stone mirror is a gorgeous centre piece.