| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
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| UP | parallax unsharpness; ulcerative proctitis; ultrahigh purity; unipolar; upright posture; ureteropelv... |
| parallax | 1. The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view. 2. <astronomy> The apparent difference in position of a body (as the sun, or a star) as seen from some point on the earth's surface, and as seen from some other conventional point, as the earth's center or the sun. Annual parallax, the greatest value of the heliocentric parallax, or the greatest annual apparent change of place of a body as seen from the earth and sun; as, the annual parallax of a fixed star. Binocular parallax, the apparent difference in position of an object as seen separately by one eye, and then by the other, the head remaining unmoved. Diurnal, or Geocentric, parallax, the parallax of a body with reference to the earth's center. This is the kind of parallax that is generally understood when the term is used without qualification. Heliocentric parallax, the parallax of a body with reference to the sun, or the angle subtended at the body by lines drawn from it to the earth and sun; as, the heliocentric parallax of a planet. Horizontal parallax, the geocentric parallx of a heavenly body when in the horizon, or the angle subtended at the body by the earth's radius. Optical parallax, the apparent displacement in position undergone by an object when viewed by either eye singly. Parallax of the cross wires (of an optical instrument), their apparent displacement when the eye changes its position, caused by their not being exactly in the focus of the object glass. Stellar parallax, the annual parallax of a fixed star. Origin: Gr. Alternation, the mutual inclination of two lines forming an angle, fr. To change a little, go aside, deviate; beside, beyond + to change: cf. F. Parallaxe. Cf. Parallel. Source: Websters Dictionary (01 Mar 1998) |
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| parallax method | Localization of a foreign body by observing the direction of its motion on a fluoroscopic screen while moving the X-ray tube or the screen. (05 Mar 2000) |
| parallax test | Measurement of the deviation in strabismus by the alternate cover test combined with neutralization of the deviation using prisms. (05 Mar 2000) |
| binocular parallax | The difference in the angles formed by the lines of sight to two objects situated at different distances from the eyes; a factor in the visual perception of depth. Synonym: stereoscopic parallax. (05 Mar 2000) |
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| vertical parallax | The relative vertical displacement of the image when each eye is closed in turn; seen in vertical diplopia, or heterophoria. (05 Mar 2000) |
| heteronymous parallax | The apparent movement of an object toward the closed eye; noted in exophoria. (05 Mar 2000) |
| homonymous parallax | The apparent movement of an object toward the open eye when one is closed; noted in oesophoria. (05 Mar 2000) |
| stereoscopic parallax | The difference in the angles formed by the lines of sight to two objects situated at different distances from the eyes; a factor in the visual perception of depth. Synonym: stereoscopic parallax. (05 Mar 2000) |
| parallax |
the apparent displacement of an object as seen from two different points that are not on a line with the object
Ãâó: wordnet.princeton.edu/perl/webwn
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| parallax |
Parallax is a fictional character from DC Comics. It is a fear elemental captured by the Guardians of the Universe and imprisoned in the Green Lantern Main Battery on Oa. The chaining of Parallax in the Battery weakened the Green Lantern Corps' control over the yellow portion of the colour-plasma spectrum. The Guardians were careful never to reveal to their troops the existence of Parallax. ...
Ãâó: en.wikipedia.org/wiki/Parallax_(comics)
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| parallax |
The apparent movement of an object viewed through a lens when the position of observation is moved laterally.
Ãâó: www12.mawebcenters.com/coltslaboratories/gloss.ivn...
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| parallax |
The difference in point of view that occurs when the lens (or other device) through which the eye views a scene is separate from the lens that exposes the film.
Ãâó: www.vistek.ca/glossary/default.asp
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| parallax |
An optical illusion which occurs in analog meters and causes reading errors. It occurs when the viewing eye is not in the same plane, perpendicular to the meter face, as the indicating needle.
Ãâó: www.flw.com/define_p.htm
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| parallax | the apparent displacement of an object as seen from two different points that are not on a line with the object |
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