Tuesday 31 May 2022

magic eye

Whilst the illusory depth-effect will vary for the beholder and can wax and wane with different strategies, the aberration in colour perception called chromo-stereopsis seems to be caused by the gradient of diffraction caused by the different wavelengths between red and blue which cause the light rays to converge on the eyes sooner does register as proudly strange insofar as it mimics the effect with 3D movies but without the need for separate, polarised images. The same principle is often seen in stained glass windows that take advantage of the same levels of contrast a visual cue to discover size and distance. Much more from Tom Stafford at Mind Hacks at the up top.