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n. An apparent change in the direction of an object, caused by a change in observational position that provides a new line of sight.

n. The change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of an observer.

n. The apparent shift of an object against a background due to a change in observer position.

n. The angle of seeing of the astronomical unit.

n. The apparent displacement, or difference of position, of an object, as seen from two different stations, or points of view.

n. 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.

n. The annual parallax. See annual parallax, below.

n. An apparent displacement of an object observed, due to real displacement of the observer, so that the direction of the former with reference to the latter is changed.

n. In optics, an apparent shifting of the spider-lines in a telescope-reticle as the eye is moved before the eyepiece: it is due to the non-coincidence of the threads with the focal plane of the object-glass.

n. the apparent displacement of an object as seen from two different points that are not on a line with the object

""Do not let us fear," wrote Lalande in his _Astronomie des Dames_, "do not let us fear to use the term parallax, despite its scientific aspect; it is convenient, and this term explains a very simple and very familiar effect.""

geocentric parallax   

optical phenomenon   

optical parallax    annual parallax    instrumental parallax    solar parallax    diurnal parallax    stellar parallax    parallax of altitude    horizontal parallax    parallax stereogram    angle parallax   

geocentric parallax    diurnal parallax    heliocentric parallax    annual parallax   

parsec    parallactic   

occultation    nucleosynthesis    refraction    pseudorange    declination    inamerica    flare-up    rhombus    goalsand    cartography