Optical Illusions

There is nothing moving on the picture. (© Akiyoshi Kitaoka: Used with permission.)

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Another static picture. (© Akiyoshi Kitaoka: Used with permission.)

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Motion is just an eye illusion. (© Akiyoshi Kitaoka: Used with permission.)

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There is nothing moving below. (© Akiyoshi Kitaoka: Used with permission.)

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Boats on the picture are not moving. It's just an eye illusion. (© Akiyoshi Kitaoka: Used with permission.)

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Is this really a spiral?

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Are the horizontal lines parallel? (of course they are)

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If you can read the following picture, then you can shout ...

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