| diffraction | When a wave train passes an obstacle secondary waves are set up that interfere with the primary wave and give rise to bands of constructive and destructive interference. Around a point source of light, in consequence, is a series of concentric light and dark bands (coloured bands with white light), a diffraction pattern. (18 Nov 1997) |
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| diffraction grating | <microscopy> An artificially produced periodic array of scattering centres capable of producing a pattern of diffracted energy, such as accurately ruled lines on a plane surface. (05 Aug 1998) |
| diffraction |
when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
Ãâó: wordnet.princeton.edu/perl/webwn
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| diffraction grating |
optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum
Ãâó: wordnet.princeton.edu/perl/webwn
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| diffraction |
Diffraction is the apparent bending and spreading of waves when they meet an obstruction. It can occur with any type of wave, including sound waves, water waves, and electromagnetic waves such as light and radio waves. Diffraction also occurs when any group of waves of a finite size is propagating; for example, a narrow beam of light waves from a laser must, because of diffraction of the beam, eventually diverge into a wider beam at a sufficient distance from the laser. ...
Ãâó: en.wikipedia.org/wiki/Diffraction
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| diffraction |
The process by which the direction of radiation is changed so that it spreads into the geometric shadow zone of an opaque or refractive object that lies in a radiation field. Diffraction is an optical
Ãâó: amsglossary.allenpress.com/glossary/browse
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| diffraction |
This occurs when waves pass through a gap or round an object of roughly the same size, or smaller than their wavelength, and then spread out.
Ãâó: library.thinkquest.org/18160/glossary.htm
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| diffract | undergo diffraction |
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| diffract | when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands |
| diffract | optical device consisting of a surface with many parallel grooves in it |
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