philosophers’ optical illusions greetings card

The philosophers’ optical illusions greetings card design derives from psychological ideas first suggested in the 19th century. Illusions are numerous, have alternative interpretations and take many forms. This card features original popasauruspopadogART geometrical drawings including an ubiquitous ambiguous cube, the gemini ‘vase’ twins, a radial illusion illustrating distortions of shape, line and curvature, and the famous arrow-head illusion. The cover image is based on an original popasauruspopadogART watercolour canvas and illustrates the optical boundary between background and foreground. If you like this card design, then you’ll like the philosophers’ optical illusions mug motif also designed by popasauruspopadogART.