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


  • Particle Size Analyzer Software speeds method development.
    Available for Mastersizer 3000 laser diffraction particle size analyzer, Mastersizer 3000 v3.00 software includes smart operational features, such as Optical Property Optimizer, which allows users to manipulate optical properties necessary to calculate particle size distributions from laser diffraction data, helping them to experimentally determine ideal settings Read more on this news related to 'Diffraction'
  • Leia aims to bring interactive Star Wars holographic displays to your phone
    By concentrating on small, mobile displays and using an innovative diffraction-based approach, HP spinout Leia may be one of the first to make interactive holographic experiences an everyday reality. Read more on this news related to 'Diffraction'
  • SXR and EUV Off-Plane Spectrometer works under vacuum.
    Conical-diffraction, off-plane X-ray Czerny-Turner (OP-XCT) operates from 8–125 nm as monochromator or imaging spectrograph for sorting laser harmonics and other applications. Unit can, with coarse diffraction grating and CCD, survey broad EUV wavelength range, dispersing 10–140 nm on 12 mm wide detector. Optical system helps maximize light throughpu Read more on this news related to 'Diffraction'

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