The Ehrenstein illusion is an optical illusion studied by the German psychologist Walter Ehrenstein. The sides of a square placed inside a pattern of concentric circles take an apparent curved shape, however the square is perfect with perfectly straight sides. There are few simmilar illusion inside this post, and sometimes the name “Ehrenstein” is associated with one of the illusory contour figures. As you see, the ends of the dark segments produce the illusion of circles (inside this post). Eventhough the apparent figures have the same color as the background, they still appear brighter. Very similar effect is obtained in the Kanizsa triangle. All of them can be found inside this post, and if this isn’t enough for you, be sure to check “Seemingly Bent Objects Category” for more seemingly bent optical illusions.
(11 votes)
cool!
I dont get the second one. will somebody please explain?
@Pandas:
The illusion is that there appears to be a circle in the centre, whereas there is none.
The dot in the middle looks brighter than the white or grey around it even though it isn’t.
awesome!!!!!!!!!!
dejavu
does anyone else see pac-man on the triangle one?
and a “not there” triangle
if ya c u can notice that when you look at the first illusion it appears that square is curved when it actually isn’t.Now try reducing the image to half its size and you will see a pattern of a star emerge.Two illusions in one.Cool!!!I repeat the 1st one with the square illusion.Really Cool!!!!!
Pacman is eating triforce!!!!!!!!!
The last one kinda looks like the jewish symbol