99.8 MB (354.1 KB compressed)
5906 x 5906 pixels
50.0 x 50.0 cm ⏐ 19.7 x 19.7 in (300dpi)
SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Goblet illusion. This image is simultaneously a drawing of a goblet and two faces. When there are two competing interpretations of an ambiguous image the brain will often switch between them. So a viewer of this image, which has been around in some form since the 18th century, may see a white goblet for a while, but then change to seeing two black faces in profile. It is impossible to see both at the same time. It is also impossible to view this as abstract shapes - once the brain knows the form of a goblet and of a face in profile it must assign one of the two to its interpretation of this image.
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