match in colour! An example of this proof can be seen at de:Bild:Optical greysquares proof.png The presentation of this illusion here is linked to an...
Source Created from en:File:Optical grey squares orange brown.png which in turn was derived from File:Optical.greysquares.arp.jpg Author user:JunCTionS (based...
DescriptionAniopticalillusion.gif Image:Optical.greysquares.arp.jpg is a pretty good example, except that because of the color depth it's difficult to...
