Optical illusion,19th-century artwork. Array of white circles on a black background,the starting point for a demonstration of an optical illusion. The circles appear to be hexagons depending on how they are viewed,and this illusion persists even when the image is replaced with a grey screen. The illusion,which varies between the right and left eye,is thought to be caused be after-imaging effects in the brain,where curves are interpreted as corners and vice-versa. Artwork from the 13th volume (first period of 1894) of the French popular science weekly 'La Science Illustree' | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library |
Bildgröße: | 4389 px × 4382 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |