angle of deviation

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.

angle of deviation

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

Word History and Origins

Origin of angle of deviation¹

First recorded in 1825–35

Example Sentences

Those cases are, of course, more remarkable where this is not the case; however, on close investigation those cases are more frequent where the angle of deviation is about the same size or smaller than the squint angle, and is fixed with a part of the retina which undoubtedly belongs to the common visual field.

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Its lesser angle of deviation from the tracheal axis.

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But the angle c o c′ must be added to p o a″, in consequence of the motion of the mirror, or the angle of deviation will be a o a″ + c o c′; or a o a″ + c o c′ = d.

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At a greater distance the angle of deviation becomes less.

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