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image
image in optics, likeness or counterpart of an object produced when rays of light coming from that object are reflected from a mirror or are refracted by a lens . An image of an object is also formed when this light passes through a very small opening like that of a pinhole camera (which has no lens). Images are classed as real or virtual. A real image occurs when the rays of light from the object actually converge to form an image and can be seen on a screen placed at the point of convergence. For example, the image produced by the refraction of light rays by a convex lens (when the distance between the object and the lens is greater than the focal length of the lens) is real, and it appears on the side of the lens opposite the one on which the object is present. On the other hand, a virtual image occurs when the prolongations of the light rays converge to form an image, but the light rays themselves do not reach the point of convergence. Thus a virtual image cannot be seen on a screen. The image in a plane mirror is virtual. It appears to be behind the mirror, at a distance equal to that of the object in front, although the rays of light from the object do not penetrate the mirror but are reflected from it. Images of the same size as the object are sometimes produced, as in the case of the plane mirror, but in other cases they are larger, and in still others, smaller. They are sometimes erect and in other cases are inverted. The size of the image and whether it is erect or inverted, real or virtual, depend on the distance of the object from the lens or mirror relative to the focal length and on the type of lens or mirror (plane, convex, or concave) employed. |
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"image." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "image." The Columbia Encyclopedia, 6th ed.. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1E1-image.html "image." The Columbia Encyclopedia, 6th ed.. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-image.html |
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image
im·age / ˈimij/ • n. a representation of the external form of a person or thing in sculpture, painting, etc. ∎ a visible impression obtained by a camera, telescope, microscope, or other device, or displayed on a video screen. ∎ an optical appearance or counterpart produced by light or other radiation from an object reflected in a mirror or refracted through a lens. ∎ Math. a point or set formed by mapping from another point or set. ∎ a mental representation or idea: he had an image of Uncle Walter throwing his crutches away. ∎ a simile or metaphor: he uses the image of a hole to describe emotional emptiness. ∎ the general impression that a person, organization, or product presents to the public: she strives to project an image of youth. ∎ [in sing.] a person or thing that closely resembles another: he's the image of his father. ∎ [in sing.] semblance or likeness: we are made in the image of God. ∎ (in biblical use) an idol. • v. [tr.] make a representation of the external form of: artworks that imaged women's bodies. ∎ (usu. be imaged) make a visual representation of (something) by scanning it with a detector or electromagnetic beam: every point on the Earth's surface was imaged by the satellite | [as n.] (imaging) medical imaging. ∎ form a mental picture or idea of: it is possible for us to image a society in which no one committed crime. DERIVATIVES: im·age·less adj. |
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"image." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "image." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O999-image.html "image." The Oxford Pocket Dictionary of Current English. 2009. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-image.html |
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image
image (im-ij) n.
1. (in physiology) an optical reproduction of an object formed on the retina when light is refracted through the eye. 2. (in radiology) a representation of the structure of an organ, tissue, etc., produced by radiography and used by physicians in diagnosis and in monitoring the effects of treatment. See imaging. i. intensifier an electronic device that provides a TV image from an X-ray source. It amplifies the signal from the original image, giving a brighter picture, so that the radiation dose can be reduced. 3. (in psychology) a mental representation resulting from thought rather than from sensory perception. See body image, imagery. |
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"image." A Dictionary of Nursing. 2008. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "image." A Dictionary of Nursing. 2008. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O62-image.html "image." A Dictionary of Nursing. 2008. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-image.html |
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image
image artificial representation of an object, likeness, statue; (optical) counterpart XIII; mental representation XIV. — (O)F. — L. imāgō, imāgin-, rel. to IMITATE.
So imagery XIV. — OF. imagerie, f. imageur maker of images. imagine XIV. — (O)F. imaginer — L. imāgināre form an image of, represent, fashion, imāginārī picture to oneself, fancy. imagination XIV. — (O)F. — L. imaginable XIV. — late L. imaginary XIV. — L. imaginative XIV. — (O)F. |
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T. F. HOAD. "image." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "image." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O27-image.html T. F. HOAD. "image." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-image.html |
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image
image An object of religious devotion. The English word does not necessarily imply condemnation, as does ‘idol’, or ‘abomination’ (1 Kgs. 11: 5), which is commonly applied in English translations to the cultic objects of the nations. In the 8th cent. CE there was a bitter controversy about the propriety of icons, or pictorial representations of Christ and the saints in churches, eventually settled in favour of pictures and images until the Reformation, when Protestants destroyed many statues and shrines.
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W. R. F. BROWNING. "image." A Dictionary of the Bible. 1997. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. W. R. F. BROWNING. "image." A Dictionary of the Bible. 1997. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O94-image.html W. R. F. BROWNING. "image." A Dictionary of the Bible. 1997. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O94-image.html |
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image
image A graphical entity which can be displayed in a document or a WEB PAGE. There are a number of formats used for storing images. On the WORLD WIDE WEB the two most popular are the GRAPHICS INTERCHANGE FORMAT and the JOINT PHOTOGRAPHIC EXPERTS GROUP format.
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DARREL INCE. "image." A Dictionary of the Internet. 2001. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. DARREL INCE. "image." A Dictionary of the Internet. 2001. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O12-image.html DARREL INCE. "image." A Dictionary of the Internet. 2001. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O12-image.html |
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image
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JOHN DAINTITH. "image." A Dictionary of Computing. 2004. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. JOHN DAINTITH. "image." A Dictionary of Computing. 2004. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O11-image.html JOHN DAINTITH. "image." A Dictionary of Computing. 2004. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O11-image.html |
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IMAGE
IMAGE Abbr. for Imager for Magnetopause-to-Aurora Global Exploration.
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"IMAGE." A Dictionary of Astronomy. 1997. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "IMAGE." A Dictionary of Astronomy. 1997. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O80-IMAGE.html "IMAGE." A Dictionary of Astronomy. 1997. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-IMAGE.html |
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image
image •damage
•image, scrimmage
•pilgrimage
•homage, West Bromwich
•plumage
•rummage, scrummage
•manage, mismanage, pannage, stage-manage
•carnage
•cranage, drainage
•spinach • concubinage • libertinage
•linage • nonage • coinage
•dunnage, tonnage
•orphanage • baronage • patronage
•parsonage • personage • Stevenage
•cozenage • seepage • slippage
•equipage • stoppage • warpage
•groupage
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"image." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 10 Feb. 2012 <http://www.encyclopedia.com>. "image." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (February 10, 2012). http://www.encyclopedia.com/doc/1O233-image.html "image." Oxford Dictionary of Rhymes. 2007. Retrieved February 10, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-image.html |
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