diffraction definition, diffraction meaning | English dictionary

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1      (Physics)   a deviation in the direction of a wave at the edge of an obstacle in its path  
2    any phenomenon caused by diffraction and interference of light, such as the formation of light and dark fringes by the passage of light through a small aperture  
3    deflection of sound waves caused by an obstacle or by nonhomogeneity of a medium  
     (C17: from New Latin diffractio a breaking to pieces, from Latin diffringere to shatter, from dis- apart + frangere to break)  

diffraction grating  
      n   a glass plate or a mirror with a large number of equidistant parallel lines or grooves on its surface. It causes diffraction of transmitted or reflected light, ultraviolet radiation, or X-rays  
diffraction pattern  
      n     (Physics)   the distinctive pattern of light and dark fringes, rings, etc., formed by diffraction  
X-ray diffraction  
      n   the scattering of X-rays on contact with matter, resulting in changes in radiation intensity, which is used for studying atomic structure  
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