Ad: Twisted Cord Illusion False Spiral Face Mask
What exactly do you see when you take a look at this twisted cord illusion? Showcase optics fun with this optical illusion cotton/polyester face mask featuring the twisted cord illusion also known as the false spiral or Fraser spiral illusion. Caption includes the following note for viewers: "Notice the overlapping black arc segments appear to form a spiral. Nevertheless the black arcs are a series of concentric circles." Make others do a double-take with their eyes today! myPsychology
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