The grid presented below looks normal in the center section but “broken” on the left and right sides.  Stare at the center of the rectangle for 15-30 seconds and notice what happens to the “broken” portions of the grid.  Do they seem to repair themselves before your very eyes? Ryota Kanai from Utrecht University in […]

Presented below is a series of black squares.  Do you notice anything peculiar about this pattern? As your eyes scan this matrix, do you see dark phantom dots appear in the white intersections?  This illusion was proposed by Ludimar Hermann in 1870.  As such, it is referred to as the Hermann grid illusion.