|Isn’t this the best illusion you’ve ever seen? The squares marked A and B really are the same shade of grey. If you don’t believe me click here. Want the proof and the explanation?The science behind the illusion is explained in a paper entitled “Lightness Perception and Lightness Illusion” written by Edward H. Adelson of the Department of Brain and Cognitive Sciences at the Massachusetts Institute of Technology.|
“Every light is a shade, compared to the higher lights, till you come to the sun; and every shade is a light, compared to the deeper shades, till you come to the night.” John Ruskin, 1879.