Rubin's vase is a famous set of ambiguous or bi-stable (i.e., reversing) two-dimensional forms developed around 1915 by the Danish psychologist Edgar Rubin. We see the image: either as two white faces
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Rubin's vase (sometimes referred to as "The Two Face, One Vase... | Download Scientific Diagram
The Rubin Vase: An Optical Illusion That Shows the Versatility of the Human Brain and the Power of Low-Code Solutions
Illusion optique, vase de Rubin, illustration Photo Stock - Alamy