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angle of refraction

noun, Physics, Optics.
the angle between a refracted ray and a line drawn normal to the interface between two media at the point of refraction.
Origin of angle of refraction
1765-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for angle-of-refraction

angle of refraction

the angle that a refracted beam of radiation makes with the normal to the surface between two media at the point of refraction
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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angle-of-refraction in Science
angle of refraction  
The angle formed by the path of refracted light or other radiation and a line drawn perpendicular to the refracting surface at the point where the refraction occurred.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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