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| Look at one circle and the others start spinning. |
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| Did you know? | | We actually do not see with our eyes - we see with our brains. The eyes basically are the cameras of the brain. One-quarter of the brain is used to control the eyes. |
| Contribute | | Do you have an idea for a quiz or brain buster? Have a cool optical illusion you would like to share? Click here to send us your ideas. |
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