#1 Technically , these are not even squares, let alone being of same colour. Upper is grey with a black shadow, and lower is white with a grey shadow. So, not the same colour.
The Ebbinghaus illusion exploits our perception of relative size. When an object is surrounded by larger objects, it seems far smaller than it actually is.
#1 Technically , these are not even squares, let alone being of same colour. Upper is grey with a black shadow, and lower is white with a grey shadow. So, not the same colour.