parallax

  1. Noun.  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.
  2. Noun.  The apparent shift of an object against a background due to a change in observer position.
  3. Noun.  The angle of seeing of the Astronomical Unit.

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This entry was last updated on RefTopia from its source on 3/20/2012.