I think this is a trick question!
Amplify’d from www.moillusions.com
Spinning Discs Illusion
This one’s too easy. Just answer which disc is turning faster, A or B? My guess goes on B! This works in a same way “Rotating Snakes” and “Rotating Snakes no.2″ Illusions work.
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See this Amp at http://bit.ly/9RNPP8