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refraction

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noun re·frac·tion \ri-ˈfrak-shən\

Definition of refraction

  1. 1 :  deflection from a straight path undergone by a light ray or energy wave in passing obliquely from one medium (as air) into another (as glass) in which its velocity is different

  2. 2 :  the change in the apparent position of a celestial body due to bending of the light rays emanating from it as they pass through the atmosphere; also :  the correction to be applied to the apparent position of a body because of this bending

  3. 3 :  the action of distorting an image by viewing through a medium; also :  an instance of this



Illustration of refraction

1603

First Known Use of refraction

1603


REFRACTION Defined for Kids

refraction

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noun re·frac·tion \ri-ˈfrak-shən\

Definition of refraction for Students

  1. :  the bending of a ray when it passes at an angle from one medium into another in which its speed is different (as when light passes from air into water)




Medical Dictionary

refraction

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noun re·frac·tion \ri-ˈfrak-shən\

Medical Definition of refraction

  1. 1:  the deflection from a straight path undergone by a light ray or a wave of energy in passing obliquely from one medium (as air) into another (as water or glass) in which its velocity is different

  2. 2a:  the refractive power of the eyeb:  the act or technique of determining ocular refraction and identifying abnormalities as a basis for the prescription of corrective lenses




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