tagged with: optics, optical illusion, illusions, motion illusion, brain teaser, psychology, cognitive effects, geek, perception, words and unwords, psyche, gag gifts, science, scientific, humor, attitude, visual perception, static image, contrasts, interacting effects
Showcase your wry optical illusion side the next time you send correspondence with this stamp featuring the optical illusion of "Motion Illusion". Just stare at it and the image will appear to move!
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