Just for Fun
What we perceive is largely a result of how we have been conditioned. And the way we perceive our environment is what makes us different from other animals and from each other.
Are the lines parallel ?
Are the thick lines parallel ?
Which inner circle is bigger ?
Stare at the dot, then lean forward and back.
ILLUSION #1 -- The staggered upright lines create the illusion that the lines between them are not parallel.
ILLUSION #2 – The diagonal lines moving away from the centre create the illusion of depth, which makes the horizontal lines seem to bend in the centre.
ILLUSION #3 – The relative sizes of the other circles skew your perception of the middle circles, creating the illusion that they are different sizes.
ILLUSION #4 – The circles of diamonds seem to rotate if you focus your eyes on their centre.
Credits and references:
Wilensky, U. (2005). NetLogo Optical Illusions model. http://ccl.northwestern.edu/netlogo/models/OpticalIllusions. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.
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