These pages demonstrate visual phenomena, and »optical« or »visual illusions«. The latter is more appropriate, because most effects have their basis in the visual pathway, not in the optics of the eye. When I find the time I will expand the explanations, to the degree that these phenomena are really understood; any nice and thoughtful comment welcome.
You may be glad to know: Not a single demonstration here contains tasteless surprises; you know, these infantile pranks where you scrutinize a picture and suddenly an ugly face screams at you…
(via 71 optical illusions and medicmike)
