“Primrose's field”. Wavy. The longer you look, the more wavy it gets.
Xah Lee, 2006-05
This page contains some visual illusions collected from the web.
Unless otherwise indicated, images on this page are copyright © by Akiyoshi Kitaoka “Trick eyes” Tokyo: KANZEN 2002, from http://www.ritsumei.ac.jp/~akitaoka/index-e.html. (used with permission)
“Primrose's field”. Wavy. The longer you look, the more wavy it gets.
Rotating Snakes.
“Rotating rays”.
“The autumn color swamp”
“Atlantis”
“Rollers”
“down wave”. source unknown.
Look at the + in the center for a while, maybe 20 seconds.
Source: Jeremy L Hinton, Michael Bach, and Source
This website is really trippy. It demonstrates motion after effect, which is not entirely understood: Source