Enjoy. And if you like that, you'll love these: - The blue and the green - Square Circle Spiral - Hidden circles illusion - A lunar illusion you'll flip over - Why does the Moon look so huge on the horizon?
Tip o' the Necker chief to Buzzfeed.
This illusion will drive you mad
Discover the fascinating hidden circles illusion and explore how our perception can trick us into seeing unique shapes.
Written byPhil Plait
| 1 min read
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