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Old 08-05-2007   #1
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Default How is optical illusion related to Geometry?

I know optical illusion is a geometry topic.But I want to know what kind of Geometry it is and the definition as well.
Old 08-05-2007   #2
Matt D
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Because optical illusions are created by light waves passing through a different medium referenced to it's present medium, for example from air to glass. Air and glass have different densities and light waves are bent at an angle passing from one to another. That angle then creates a new focal point for the light waves which manifests itself in an illusion. That is why you may see your tv picture in your backyard after it passes through a glass window. The relation to geometry is the bending of the light forms a new angle of incidence for the light waves and is mathematically predictable based on the known density of the two involved media.


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