Optical illusions

Kitaoka's rotating-wheels illusion (click on link for more of his amazing illusions)

Twinkling-dots illusion:

Isia Leviant's 'Enigma' (see New Scientist 27/9/08 for a hypothesis about how it works):

After-image generator:

Motion illusion by Ouchi, discussed in Nature, 423, p407 (2003):


How many faces?

Chris Benn (crb@ing.iac.es)

Original: 2003 Oct 8, last updated 2011 Mar 5

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