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Monday, September 22, 2008

How easily we are fooled: The rotating grid illusion

Filmmaker and animator David O'Reilly (who came up with the concept for iHologram) has noticed an interesting property in this animated GIF:

dor_grid_300x300.gif

He writes:

While working in 3D last year, I discovered this optical illusion: A large grid seen rotating at a certain speed will appear to group itself into smaller grids, spinning independently.

Original here

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