optical+illusions
131McCollough effect — (click to enlarge) A test image for the McCollough effect. On first looking at this image, the vertical and horizontal lines should look black and white, colourless. After induction (see images below), the horizontal lines should look greenish… …
132Ponzo illusion — An example of the Ponzo Illusion. Both horizontal lines are the same size. The Ponzo illusion is a geometrical optical illusion that was first demonstrated by the Italian psychologist Mario Ponzo (1882–1960) in 1913. He suggested that the human… …
