Paralaks: Pabidaan ralatan

[[File:Parallax Example en.svg|thumb|upright=1.4|right|Ilustrasi sadarhana masalah paralaks matan ubjik lawan jarak tawing maraga paubahan sudut pandang. Amun diitihi matan ""Sudut pandang A", objek kalihatannga baandak di muka kutak warna biru. Amun diitihi matan "Sudut pandang B", ubjik tadi "kalihatan" sudah bapindah ka kutak warna habang.]]

 

'''Paralaks''' (baasal matan kata [[Yunani Bahari]] ''παράλλαξις'' (parallaxis) nang artinya alternisasi) marupakan pamindahan atawa parbidaan dalam [[malihat andak]] sabuting ubjik lawan dua buting [[pandangan (astronomi)|sudut pandang]] nang balain wan diukur lawan sudut atawa semi-sudut kamiringan antara dua garis ngitu.<ref>{{cite dictionary | title=Parallax | quote=Mutual inclination of two lines meeting in an angle | encyclopedia=Shorter Oxford English Dictionary | date=1968}}</ref><ref name=oed>{{cite dictionary | encyclopedia=Oxford English Dictionary | date=1989 | edition=Second | title=Parallax | quote=''Astron.'' Apparent displacement, or difference in the apparent position, of an object, caused by actual change (or difference) of position of the point of observation; spec. the angular amount of such displacement or difference of position, being the angle contained between the two straight lines drawn to the object from the two different points of view, and constituting a measure of the distance of the object. | url=http://dictionary.oed.com/cgi/entry/50171114?single=1&query_type=word&queryword=parallax&first=1&max_to_show=10 }}</ref> Due to [[perspective (graphical)|foreshortening]], nearby objects show a larger parallax than farther objects when observed from different positions, so parallax can be used to determine distances.