I'm surprised that we haven't yet seen a stereoscope revival. This is a perfect time for it, what with our culture's obsession with Victorian detritus and with the artisanal, as well as new technical ...

A stereogram optical illusion is a fascinating visual puzzle that hides a 3D image within a 2D pattern. At first glance, it appears to be a random collection of repeating designs or colourful dots.

Stereograms mark a threshold in understanding visual perception. Modern study of stereopsis began with Wheatstone's invention of the stereogram and stereoscope (~ 1832), important tools in vision ...