Gaze into these hypnotic rings and you'll be convinced that you're staring at a spiral. But if you carefully follow their outline, it becomes clear that they're actually concentric circles.
New Scientist
Saturday, February 4, 2012
Rotating rings create phantom spiral
Gaze into these hypnotic rings and you'll be convinced that you're staring at a spiral. But if you carefully follow their outline, it becomes clear that they're actually concentric circles.
New Scientist
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