Diffraction

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Diffraction Meaning and Definition in Dictionary

Definitions from Wordnet 2.0


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

Definitions from Wiktionary


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

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Diffraction Meaning and Definition in Wikipedia


Diffraction is a physics concept. Diffraction occurs when waves bend around small obstacles, or when waves spread out after they pass through small openings. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as light that the eye can see. Diffraction also occurs with matter such as electrons.

Diffraction is caused by one wave of light being shifted by a diffracting object. This shift will cause the wave to have interference with itself. Interference can be either constructive or destructive. When interference is constructive, the intensity of the wave will increase. When interference is destructive, the intensity will decrease, sometimes to a point where it is completely destroyed. These patterns of interference rely on the size of the diffracting object and the size of the wave. The strongest examples of diffraction occur in waves where the wavelength is close to the same size of the object causing the diffraction.



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Diffraction Sample Sentences in News


  • Integrated space-group and crystal-structure determination
    ( International Union of Crystallography ) SHELX is a system of nine programs for the solution and refinement of crystal structures against X-ray and neutron diffraction data. Read more on this news related to 'Diffraction'
  • SHELXT: Integrated space-group and crystal-structure determination
    Although crystal structure determination by means of X-ray diffraction has had a huge scientific impact over the last 100 years, it still requires the solution of the crystallographic phase problem. This problem arises because although the intensities of the diffracted X-rays can be measured, direct measurement of their relative phases is still only rarely practic Read more on this news related to 'Diffraction'
  • Proposed Space Telescope Uses Huge Opaque Disk To Surpass Hubble
    Required Snark writes NASA has funded a study of a geo-sychrounous orbit telescope that uses a half-mile diameter opaque disk to provide images with 1000 times the resolution of the Hubble. It uses diffraction at the edge of the disk to focus light, resulting in a very high quality image. It's named the Aragoscope, after the scientist Francois Arago, who first Read more on this news related to 'Diffraction'

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