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| Description: Although perception is usually accurate, we can be fooled. In (a), the cats as drawn are exactly the same size; in (b), the diagonal lines are all parallel. To see the illusion depicted in (c), hold your index fingers 5 to 10 inches in front of your eyes as shown and then focus straight ahead. Do you see a floating “fingertip frankfurter”? Can you make it shrink or expand? Picture Stats: Views: 154 Filesize: 108.2kB Height: 315 Width: 817 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=41566 |