The Rubin vase (sometimes known as Rubin's vase, the Rubin face or the figure–ground vase) is a famous example of ambiguous or bi-stable (i.e., reversing) two-dimensional forms developed around 1915 by the Danish psychologist Edgar Rubin. The depicted version of Rubin's vase can be seen as the black profiles of two people looking towards each other or as a white vase, but not both.
The Rubin vase (sometimes known as Rubin's vase, the Rubin face or the figure–ground vase) is a famous example of ambiguous or bi-stable (i.e., reversing) two-dimensional forms developed around 1915 by the Danish psychologist Edgar Rubin. The depicted version of Rubin's vase can be seen as the black profiles of two people looking towards each other or as a white vase, but not both.
Source: Wikipedia "Rubin vase" · CC BY-SA 4.0
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