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Diffraction

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diffraction
n. process of breaking up or bending waves (especially light or sound waves)

Wikipedia English The Free Encyclopedia

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Diffraction
Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible lightX-rays and radio waves.

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WordNet 2.0 Dictionary

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diffraction

Noun
1. when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
(hypernym) optical phenomenon
(hyponym) X-ray diffraction
(derivation) diffract


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diffraction
nf. diffraction, process of breaking up or bending waves (especially light or sound waves)

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diffraction
n. difrakce


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