angle of deviation

American  

noun

Optics.

1. 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.

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angle of deviation British  

noun

1. 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

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Etymology

Origin of angle of deviation

First recorded in 1825–35

Example Sentences

Its lesser angle of deviation from the tracheal axis.

From Bronchoscopy and Esophagoscopy A Manual of Peroral Endoscopy and Laryngeal Surgery by Jackson, Chevalier

At a greater distance the angle of deviation becomes less.

From A History of Science — Volume 3 by Williams, Henry Smith