The Hering illusion was discovered by Ewald Hering, a German physiologist in 1861. In this illusion, two red lines are parallel to each other but they don’t seem to due to the back lines. These red lines look like bulging out from the center but actually that distortion is due to overestimation of the angle made at the points of intersection.

So do you think this type of object is possible?

This optical illusion was submitted by Anh Pham.

British psychologist James Fraser was the creator of this illusion in 1908.

Wilhelm Wundt, a German psychologist described this illusion in the 19th century. In this illusion, both red lines are parallel to each other but due to the other lines, it may seem that these two red lines are not parallel.

This optical illusion was submitted by Joseph Rose.

All the diagonal lines are parallel but they don’t look parallel due to the short lines.

This optical illusion was submitted by Henry.

The Poggendorff Illusion was named after Poggendorff who discovered this illusion. In this illusion, a straight black and red line is obscured by a grey rectangle. The blue line appears to be a continuation of the black one where as actually it is the continuation of the red line.

This optical illusion was submitted by Mark Rowen.

Are all the four lines of same size? Many of you might think the horizontal line which makes the top of T is shorted but actually its not. These all are of exactly same length.

This optical illusion was submitted by Anh Pham.

This optical illusion was submitted by Anh Pham.

This optical illusion was submitted by Anh Pham.