parallax
noun
- change in apparent angular position with change in observing location
Wiktionary
Pronunciation: /ˈpæɹ.əˌlæks/ / /ˈpaɹəˌlaks/
noun
Etymology: From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaxis, “alteration”) from παραλλάσσω (parallássō, “to cause to alternate”) from ἀλλάσσω (allássō, “to alter”) from ἄλλος (állos, “other”). By surface analysis, par- + all- + -ax.
- An apparent shift in the position of two stationary objects relative to each other as viewed by an observer, due to a change in observer position.
“[…] Heliocentrick places, to which the Parallaxes being applied, give the Geocentrick.”
“Planes farther back on the z-axis scroll more slowly than those in front of them, producing a parallax effect. Early games with parallax scrolling tended to have their action taking place all in the forefront plane […]”
- The angle of seeing of the astronomical unit.
verb
Etymology: From Middle French parallaxe, from Ancient Greek παράλλαξις (parállaxis, “alteration”) from παραλλάσσω (parallássō, “to cause to alternate”) from ἀλλάσσω (allássō, “to alter”) from ἄλλος (állos, “other”). By surface analysis, par- + all- + -ax.
- To measure (a distance) based on parallax observations.
- To produce an illusion of levels of distance by shifting layers at different rates.