4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English optical illusion URL: https://commons.wikimedia.org/wiki/user:Ironnail Wikimedia username:...
DescriptionOptical illusion.png English: Optical illusion - square A is darker than square B Polski: Złudzenie optyczne - pole A jest ciemniejsze od pola...
http://upload.wikimedia.org/wikipedia/commons/thumb/6/60/Grey_square_optical_illusion.PNG English...
is a derivative work of the following images: Image:Grey_square_optical_illusion.PNG licensed with Copyrighted free use 2008-01-13T21:13:45Z Mahahahaneapneap...
illusion.svg is a vector version of this file. It should be used in place of this PNG file when not inferior. File:Grey square optical illusion.PNG →...
with the square the red sphere is on, creating an optical illusion. The impossible triangle illusions and M.C. Escher's ever-rising staircases have a similar...
An optical illusion. Square A is exactly the same shade of grey as square B. Rendered with POV-ray by Florian Koch. English...
example of this proof can be seen at de:Bild:Optical greysquares proof.png The presentation of this illusion here is linked to an animated GIF that demonstrates...
DescriptionBlack blob - optical illusion.png Deutsch: Optische Täuschung: Die "schwarzes Loch Illusion". Eine dunkle elliptische Fläche, die nach außen...
