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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Optical_illusion
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1992-09-03
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287b
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9 lines
An optical illusion is a scene or picture
that fools the eye. An example of a natural
optical illusion is that the Moon appears
bigger when it is on the horizon than when it
is high in the sky, owing to the refraction
of light rays by the Earth's atmosphere.
Subject by: Shaun Jay