angle of deviation

noun Optics.
the angle equal to the difference between the angle of incidence and the angle of refraction of a ray of light passing through the surface between one medium and another of different refractive index.
Also called deviation.


Origin:
1825–35

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
angle of deviation
 
n
the angle between the direction of the refracted ray and the direction of the incident ray when a ray of light passes from one medium to another

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
Each of the fifteen measurements are weighted by the cosine of the angle of deviation.
Also called angle of deviation, angle of drift, and inclination.
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