An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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vector perturbation
  پرتورش ِ برداری  
partureš-e bordâri
Fr.: perturbation vectorielle  

The perturbation in the → primordial Universe plasma caused by → vorticity. These perturbations cause → Doppler shifts that result in → quadrupole anisotropy.

See also: → vector; → perturbation.