parallax


parallax
/ˈpærəlæks / (say 'paruhlaks)

noun
1. a misalignment in the comparison of two locations due to the relative position of the observer.
2. diurnal parallax or geocentric parallax, the apparent displacement of a heavenly body due to its being observed from the surface instead of from the centre of the earth.
3. annual parallax or heliocentric parallax, the apparent displacement of a heavenly body due to its being observed from the earth instead of from the sun.
4. apparent change in the position of crosshairs as viewed through a telescope, when the focusing is imperfect.
{Greek parallaxis change}
parallactic /pærəˈlæktɪk/ (say paruh'laktik), adjective
parallactically /pærəˈlæktɪkli/ (say paruh'laktiklee), adverb

Australian English dictionary. 2014.

Look at other dictionaries:

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  • Parallax — Par al*lax, n. [Gr. ? alternation, the mutual inclination of two lines forming an angle, fr. ? to change a little, go aside, deviate; para beside, beyond + ? to change: cf. F. parallaxe. Cf. {Parallel}.] 1. The apparent displacement, or… …   The Collaborative International Dictionary of English

  • parallax — [par′ə laks΄] n. [Fr parallaxe < Gr parallaxis < parallassein, to vary, decline, wander < para ,PARA 1 + allassein, to change < allos, other: see ELSE] 1. the apparent change in the position of an object resulting from the change in… …   English World dictionary

  • Parallax — (Hal Jordan) es un superhéroe del Universo DC. Debuto en el número 50 de la revista Green Lantern. Parallax es la encarnacion de Hal Jordan tras los tragicos eventos de Crespusculo Esmeralda saga en la que es destruida Ciudad Costera así como… …   Enciclopedia Universal

  • parallax — (n.) 1570s, from M.Fr. parallaxe (mid 16c.), from Gk. parallaxis change, alteration, inclination of two lines meeting at an angle, from parallassein to alter, make things alternate, from para (see PARA (Cf. para )) + allassein to change, from… …   Etymology dictionary

  • parallax — ► NOUN 1) the apparent difference in the position of an object when viewed from different positions, e.g. through the viewfinder and the lens of a camera. 2) Astronomy the angular difference in the apparent positions of a star observed from… …   English terms dictionary

  • Parallax — For other uses, see Parallax (disambiguation). A simplified illustration of the parallax of an object against a distant background due to a perspective shift. When viewed from Viewpoint A , the object appears to be in front of the blue square.… …   Wikipedia

  • parallax — parallactic /par euh lak tik/, adj. parallactically, adv. /par euh laks /, n. 1. the apparent displacement of an observed object due to a change in the position of the observer. 2. Astron. the apparent angular displacement of a celestial body due …   Universalium

  • Parallax SX — The Parallax SX line of microcontrollers were formerly made by Ubicom. The SX dies are still manufactured by Ubicom, who sends them to Parallax for packaging. Ubicom used to make SX processor with 18, 20, 28, 48 and 52 pins, but because Parallax… …   Wikipedia

  • parallax — i. As it relates to photo interpretation, the apparent displacement of the position of a body with respect to a reference point or system caused by a shift in the point of observation. In the illustration, A will see the black post to the right… …   Aviation dictionary


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