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diffraction    音标拼音: [dɪfr'ækʃən]
n. 衍射

衍射

diffraction
绕射

diffraction
n 1: when light passes sharp edges or goes through narrow slits
the rays are deflected and produce fringes of light and
dark bands

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.
[1913 Webster]

Remarked by Grimaldi (1665), and referred by him to a
property of light which he called diffraction.
--Whewell.
[1913 Webster]

{Diffraction grating}. (Optics) See under {Grating}.

{Diffraction spectrum}. (Optics) See under {Spectrum}.
[1913 Webster]

76 Moby Thesaurus words for "diffraction":
amplitude, antinode, attenuation, broadcast, broadcasting,
circumfusion, crest, de Broglie wave, deflection, deflexure,
diffusion, dilution, dispensation, dispersal, dispersion,
dissemination, dissipation, distortion, distribution, divergence,
electromagnetic radiation, electromagnetic wave, evaporation,
expansion, flection, flexure, fragmentation, frequency,
frequency band, frequency spectrum, guided wave, in phase,
interference, light, longitudinal wave, mechanical wave, node,
out of phase, peppering, period, periodic wave, propagation,
publication, radiation, radio wave, ray, refraction, reinforcement,
resonance, resonance frequency, scatter, scattering, scatterment,
seismic wave, shock wave, shotgun pattern, skewness, sound wave,
sowing, spattering, splay, spread, spreading, sprinkling, strewing,
surface wave, tidal wave, torsion, transverse wave, trough,
volatilization, wave, wave equation, wave motion, wave number,
wavelength


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  • Diffraction - Wikipedia
    Diffraction The diffraction pattern (Airy disc) of a red laser beam projected onto a plate after passing through a small circular aperture in another plate Diffraction is the deviation of waves from straight-line propagation due to an obstacle or through an aperture, without any change in their energy
  • 17. 1 Understanding Diffraction and Interference - OpenStax
    Explain wave behavior of light, including diffraction and interference, including the role of constructive and destructive interference in Young’s single-slit and double-slit experiments Perform calculations involving diffraction and interference, in particular the wavelength of light using data from a two-slit interference pattern Teacher
  • Diffraction | Definition, Examples, Types, Facts | Britannica
    Diffraction, the spreading of waves around obstacles Diffraction takes place with sound; with electromagnetic radiation, such as light, X-rays, and gamma rays; and with very small moving particles such as atoms, neutrons, and electrons, which show wavelike properties
  • Diffraction: Definition, Physics, Equation, and Formula
    Diffraction Grating A diffraction grating is a multi-slit surface with a periodic structure that splits and diffracts light into several beams traveling in different directions It consists of many parallel closely-spaced slits with the spacings of the order of the wavelength of light
  • The Feynman Lectures on Physics Vol. I Ch. 30: Diffraction
    30–6 Diffraction by opaque screens Now we come to a very interesting situation Suppose that we have an opaque sheet with holes in it, and a light on one side of it We want to know what the intensity is on the other side What most people say is that the light shines through the holes, and produces an effect on the other side
  • What is diffraction in physics? - California Learning Resource Network
    Diffraction, a fundamental wave phenomenon, plays a pivotal role across numerous technological domains From the intricate workings of optical fibers to the advanced imaging techniques used in medical diagnostics and materials science, understanding diffraction is crucial for anyone working with wave-based technologies This article provides a comprehensive overview of diffraction, its
  • 4: Diffraction - Physics LibreTexts
    Diffraction can send a wave around the edges of an opening or other obstacle A single slit produces an interference pattern characterized by a broad central maximum with narrower and dimmer maxima to the sides
  • Handout 4: Basics of Diffraction - The University of Toledo
    X-ray diffraction “Scattering of X-rays by the atoms of a crystal that produces an interference effect so that the diffraction pattern gives information on the structure of the crystal or the identity of a crystalline substance” (Webster’s) remember that both light and X-rays are electromagnetic radiation – the only difference lies in the wavelength!
  • Diffraction in Physics: Definition, Types Easy Examples - Vedantu
    Diffraction is the phenomenon of the bending of waves as they pass around an obstacle or through an aperture Instead of continuing in a straight line, the waves spread out This effect is most prominent when the wavelength of the wave is comparable to the size of the obstacle or opening
  • Diffraction Explained | Wave, Interference Patterns
    Understanding Diffraction: Wave, Interference, and Patterns Diffraction is a fundamental concept in the study of waves and optics that describes how waves bend around obstacles and spread out as they pass through narrow openings It is a phenomenon that occurs with all types of waves, including sound, light, and water waves





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