ANGLE OF INCIDENCE • DICCIONARIO INGLES.COM • Definition of Angle of incidence

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/ˈæŋgəl əv ˈɪnsədəns/ Listen

noun

Angle of incidence n. (Aeronautics) The angle between the chord of an aerocurve and the relative direction of the undisturbed air current.

Incidence n.

A falling on or upon; an incident; an event; an occurrence. (Obs.)

(Physics) The direction in which a body, or a ray of light or heat, falls on any surface. "In equal incidences there is a considerable inequality of refractions."

The rate or ratio at which something occurs; as, the incidence of murder in Los Angeles; the incidence of cancer in men over 50.

Angle of incidence, the angle which a ray of light, or the line of incidence of a body, falling on any surface, makes with a perpendicular to that surface; also formerly, the complement of this angle.

Line of incidence, the line in the direction of which a surface is struck by a body, ray of light, and the like.

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Etymology of 'Angle of incidence'

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Collaborative International Dictionary of English 0.48

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"Angle of incidence" Quotes from Famous Books

... &c. and their reason is because this light is discerned in many places,[1] whereas those bodies which give light by reflexion can there onely be perceived where the angle of reflexion is equall to the angle of incidence, and this is onely in one place, as in a looking-glasse those beames which are reflected from it cannot bee perceived in every place where you may see the glasse, but onely there where your eye is placed on the same line ...

— The Discovery of a World in the Moone • John Wilkins

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