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what is the meaning of a critical angle?
Critical angle is defined as the angle of incidence that provides an angle of refraction of 90-degrees.
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Asked 5/7/2012 9:02:33 AM
Updated 3/2/2014 8:10:02 PM
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Edited by yumdrea [3/2/2014 8:09:26 PM]
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Critical angle is defined as the angle of incidence that provides an angle of refraction of 90-degrees.

Added 3/2/2014 8:10:02 PM
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