An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Dalton minimum
  کمینه‌ی ِ دالتون  
kamine-ye Dalton
Fr.: minimum de Dalton  

A 40-year period of unusually low → solar activity, from about 1790 to 1830. See also the → Maunder minimum.

See also: Named after John Dalton (1766-1844), British meteorologist; → minimum.