An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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atmospheric dispersion
  پاشش ِ جوی  
pâšeš-e javvi
Fr.: dispersion atmosphérique  

The splitting of starlight into a spectrum in the atmosphere because the atmosphere acts as a refracting prism. This phenomenon brings about a practical problem for spectroscopic observations using a slit. → differential refraction; → atmospheric refraction.

See also: → atmospheric; → dispersion.