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Encyclopedia > Mirror Image

A mirror image is a mirror based duplicate of a single image.

Contents

In Geometry

In Two Dimensions

In geometry, the mirror image of an object or two-dimensional figure is the virtual image formed by reflection in a plane mirror; it is of the same size as the original object, yet different, unless the object or figure has reflection symmetry (also known in the terminology of modern physics as a P-symmetry). Calabi-Yau manifold Geometry (Greek γεωμετρία; geo = earth, metria = measure) is a part of mathematics concerned with questions of size, shape, and relative position of figures and with properties of space. ... Top: The formation of a virtual image using a concave lens. ... In erik, a reflection (also spelled reflexion) is a map that transforms an object into its mirror image. ... A plane mirror is a mirror with a planar reflective surface. ... Figures with the axes of symmetry drawn in. ... P-symmetry is simply the spatial symmetry exhibited during a reflection. ...


If a point of an object has coordinates (x,y,z) then the image of this point (as reflected from the mirror in y,z plane) has coordinates (-x,y,z) - so mirror reflection is a reversal of the coordinate axis perpendicular to the mirror's surface. Thus, a mirror image does not have reversed right and left (or up and down), but rather reversed front and back.

Mirror image
Mirror image

A mirror with vase. ... A mirror with vase. ...

Examples

A mirror image of a two-dimensional figure is also obtained when looking at it from the other side, in the case that the figure can still be seen from there. This may be the case due to transparency, or if the coloring is not just at the surface but through and through. A tetromino, also spelled tetramino or tetrimino, is a geometric shape composed of four squares, connected orthogonally. ... An image may be through and through in the following cases: ink or paint penetrating to the other side inlaying with another material, stained glass, patchwork, woodwork, linoleum, marble, etc. ...


Examples

  • text or pictures on glass or textiles (a printed T-shirt worn inside out, a parasol)
  • paper printed on one side, looked at from the other side, holding it to the light.

In Three Dimensions

The concept of mirror image can be extended to three-dimensional objects, including the inside parts, even if they are not transparent. The term then relates to structural as well as visual aspects. This is also called enantiomer or enantiomorph. Transparent glass ball In optics, transparency is the property of allowing light to pass. ...


A mirror image appears three-dimensional if the observer moves. This is because the relative position of objects changes as the observer's perspective changes. [1]


Looking through a mirror from different positions (but necessarily with the point of observation restricted to the halfspace on one side of the mirror) is like looking at the 3D mirror image of space; without further mirrors only the mirror image of the halfspace before the mirror is relevant; if there is another mirror, the mirror image of the other halfspace is too.


Chirality

Chirality is a term in geometry where a figure is said to be chiral if it is not identical to its mirror image, or, more precisely, can't be mapped to its mirror image by rotations and translations alone. In geometry, a figure is chiral (and said to have chirality) if it is not identical to its mirror image, or more particularly if it cannot be mapped to its mirror image by rotations and translations alone. ...


Examples

  • The mirror-image of a right hand is like a left hand to have a pull with.
  • The mirror-image of a human body is roughly like a human body, but with internal differences, particularly in the abdomen; for a particular person there are also minor external differences, the most striking may be the hair if that is not symmetrically cut and combed.
  • The 3D tetrominos left and right screw
  • The two versions of the snub cube are mirror images of each other.
  • The two isomers in the case of optical isomerism.
  • Clothing is often approximately symmetric. However, for fastening the right to the left side (of a shirt, coat, flies, dress, etc.), often on the front side, but also on the back side, if buttons are used one side goes over the other; in the case of a zip fastener there is at least minor asymmetry, but often also one flap goes over the other. A belt, although often vertically symmetric, provides also asymmetry. A skirt may have a zip fastener on one side. There may also be asymmetry with regard to pockets, for example only one inner pocket.

The hands (med. ... A tetromino, also spelled tetramino or tetrimino, is a geometric shape composed of four squares, connected orthogonally. ... The snub cube, or snub cuboctahedron, is an Archimedean solid. ... In chemistry, isomers are molecules with the same chemical formula and often with the same kinds of chemical bonds between atoms, but in which the atoms are arranged differently (analogous to a chemical anagram). ... Optical isomerism is a form of isomerism (specifically stereoisomerism) where the two different isomers are the same in every way except being non-superposable mirror images of each other. ... Clothing protects the vulnerable nude human body from the extremes of weather, other features of our environment, and for safety reasons. ... This article is about the fastening device called the zip. ... A skirt is a traditionally feminine tube- or cone-shaped garment which is worn from the waist and covers the legs. ...

The Mirror Image of a Mirror Image

The mirror-image of a mirror image is a regular image. When you see a reflection that surprisingly is a regular image this is usually caused by the fact that you are looking at the reflection of a reflection, or the reflection of an image seen from the other side (see above). On sunny days perhaps the most common example of the latter is seeing the reflection in a window of the inside of a parasol with text on it.


Occasionally you can see a mirror image, even though you are aware of looking at the reflection of a reflection; this may be due to a third reflection.


Mirror Images of Text

The word fire and its mirror image are displayed on the front of this fire engine
The word fire and its mirror image are displayed on the front of this fire engine

A text is sometimes deliberately displayed in mirror image, in order to be read through a mirror. Image File history File links Metadata Size of this preview: 800 × 532 pixelsFull resolution (3008 × 2000 pixel, file size: 2. ... Image File history File links Metadata Size of this preview: 800 × 532 pixelsFull resolution (3008 × 2000 pixel, file size: 2. ... Fire Engine in South Bend, Indiana. ...


Examples

A special kind of "mirror image" of a text is with the letters in reversed order, while the individual letters are normal, see elgooG. The real mirror image of that is with the letters in normal order, but each in mirror image. An ambulance in San Jose del Cabo, Mexico A Helicopter used as an Ambulance. ... A typical multiplex (AMC Promenade 16 in Woodland Hills, Los Angeles, United States). ... A commonly-used symbol indicating that a program or movie is closed-captioned. ... Hearing impairment is a full or partial decrease in the ability to detect or understand sounds. ... The Rear Window Captioning System is a method for presenting, through captions, a transcript of the audio portion of a film in theatres for deaf, hard-of-hearing, or hearing impaired people. ... elgooG Logo The correct title of this article is . ...


Systems of Mirrors

In the case of two mirrors, say vertical ones, in planes at an angle α, looking through both from the sector which is the intersection of the two halfspaces, is like looking at a version of the world rotated by an angle of 2α; the points of observations and directions of looking for which this applies correspond to those for looking through a frame like that of the first mirror, and a frame at the mirror image with respect to the first plane, of the second mirror. If the mirrors have vertical edges then the left edge of the field of view is the plane through the right edge of the first mirror and the edge of the second mirror which is on the right when looked at directly, but on the left in the mirror image.


In the case of two parallel mirrors, looking through both once is like looking at a version of the world which is translated by twice the distance between the mirrors, in the direction perpendicular to them, away from the observer. Since the plane of the mirror in which one looks directly is beyond that of the other mirror, one always looks at an oblique angle, and the translation just mentioned has not only a component away from the observer, but also one in a perpendicular direction. The translated view can also be described by a translation of the observer in opposite direction. For example, with a vertical periscope, the shift of the world is away from the observer and down, both by the length of the periscope, but it is more practical to consider the equivalent shift of the observer: up, and backward. Principle of the periscope. ...


In Art

Mirror images are commonly used in many improv music scenes to create a sense of urgency and visual stimulation. Dutch composer and lutenist Jozef van Wissem has released four solo CD's consisting of Mirror Images composed for Renaissance lute and electronics : "Retrograde, A Classical Deconstruction ( Persephone 1999)" Narcissus Drowning" (Persephone 2000), "Simulacrum, Mirror images for solo Lute and Electronics"( Bvhaast 2003) and " Objects in Mirror are closer than they appear, solo lute palindromes, airfield recordings and electronics" ( BVhaast 2005) Musical improvisation is the spontaneous creative process of making music while it is being performed. ...


See also

In geometry, a figure is chiral (and said to have chirality) if it is not identical to its mirror image, or more particularly if it cannot be mapped to its mirror image by rotations and translations alone. ... A right-handed Cartesian coordinate system, presenting the z (up) vector and y (forward) vector, the right is defined to be the positive x vector. ... Handedness is an attribute of human beings defined by their unequal distribution of fine motor skill between the left and right hands. ... The notes on Leonardo da Vincis famous Vitruvian Man image are in mirror writing. ... A flopped image is a static or moving image that is generated by a mirror-reversal of an original across a vertical axis. ... A flipped image is a static or moving image that is generated by a mirror-reversal of an original across a horizontal axis. ...

External links


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mirror image - definition of mirror image in Encyclopedia (588 words)
In geometry, the mirror image of an object or two-dimensional figure is the virtual image formed by a plane mirror; it is of the same size as the original object, yet different, unless the object or figure has mirror-image symmetry (also known in the terminology of modern physics as a P-symmetry).
A mirror image of a two-dimensional figure is also obtained when looking at it from the other side, in the case that the figure can still be seen from there.
A special kind of "mirror image" of a text is with the letters in reversed order, while the individual letters are normal, see http://wikipedia.org.mirror.sytes.org/wiki/mirror_image.
  More results at FactBites »

 

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