Diffraction

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Dictionary Meaning and Definition on 'Diffraction'

Diffraction Meaning and Definition from WordNet (r) 2.0
    diffraction n : when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
Diffraction Meaning and Definition from Webster's Revised Unabridged Dictionary (1913)
    Diffraction \Dif*frac"tion\, n. [Cf. F. diffraction.] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars. Remarked by Grimaldi (1665), and referred by him to a property of light which he called diffraction. --Whewell. Diffraction grating. (Optics) See under Grating. Diffraction spectrum. (Optics) See under Spectrum.
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Wikipedia Meaning and Definition on 'Diffraction'


Diffraction refers to various phenomena which occur when a wave encounters an obstacle. Italian scientist Francesco Maria Grimaldi coined the word "diffraction" and was the first to record accurate observations of the phenomenon in 1665. In classical physics, the diffraction phenomenon is described as the apparent bending of waves around small obstacles and the spreading out of waves past small openings. Similar effects occur when light waves travel through a medium with a varying refractive index or a sound wave through one with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, x-rays and radio waves. As physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics.

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Diffraction Sample Sentences in News


  • Rigaku Shows Latest Products at IUCr 2014 Conference
    Rigaku Corporation will be exhibiting its advanced lines of X-ray diffraction and crystallization automation instrumentation at the 23rd annual International Union of Crystallography (IUCr) meeting in Montréal, Québec, Canada from August 5-12, 2014. (PRWeb August 06, 2014) Read the full story at http://www.prweb.com/releases/2014/08/prweb12075282.htm Read more on this news related to 'Diffraction'
  • Bruker launches unique software package for dynamical EBSD pattern simulation
    Bruker introduces ESPRIT DynamicS, a highly sophisticated and powerful software tool for most realistic, high resolution simulation of electron backscatter diffraction (EBSD) patterns. Read more on this news related to 'Diffraction'
  • Acylinder Lenses focus light in one dimension.
    Used for creating sharp, thin line profiles, TECHSPEC® Acylinder Lenses are designed to reduce spherical aberration along focusing axis and provide diffraction-limited focusing performance in one dimension. There are 8 models available, and all can be supplied uncoated or with MgF2 anti-reflection coating. Diameters include 12.5 and 25 mm, and focal lengths inclu Read more on this news related to 'Diffraction'

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