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#137 : Where Is The Middle?

Illusion
[Used with permission - © G Sarcone - www.archimedes-lab.org]

#138
 [#138]

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Which finger is pointing at the exact middle of the shape's height?

#137 | More Info | Print Illusion

#136
[#136] 

There are many different types of illusion. Physical illusions are illusions where something has happened before the light reaches the eye, such as a rainbow. Physiological illusions are the effects on the brain by stimulation of a specific type such as brightness, colour and movement. Visual cognitive illusions are those that go against what we perceive as logic, and can continue to confuse us even when we know the trick.



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[Added September 2011]

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