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Optical Illusions Art Gallery

What are optical illusions, and how do they work? The word illusion comes from the Latin word illudere, meaning “to mock.” These illusions trick our brains into perceiving something different than physical reality. In this gallery you’ll see examples of these different types of optical illusions: illusory motion (images that appear to be moving), double pictures (images that contain two pictures in one), and impossible objects (images that make sense when drawn on paper, but which could never exist in real life!) Can you identify which image is which type of optical illusion?

(To see the next image, click the right arrow.)

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