Editing Virtual reality (section)

=== Display resolution ===
Minimal Angle of Resolution (MAR) refers to the minimum distance between two display pixels. At a distance, a viewer can clearly distinguish the independent pixels. Often measured in arc-seconds, MAR between two pixels has to do with the viewing distance. For the general public, resolution is about 30–65 arc-seconds, which is referred to as the spatial resolution when combined with distance. Given the viewing distance of 1m and 2m respectively, regular viewers won't be able to perceive two pixels as separate if they are less than 0.29mm apart at 1m and less than 0.58mm apart at 2m.<ref>{{Cite book|last=Davson|first=Hugh|url=https://www.worldcat.org/oclc/841909276|title=The Physiology of The Eye.|date=1972|publisher=Elsevier Science|isbn=978-0-323-14394-3|location=Burlington|oclc=841909276}}</ref>