An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Forbes effect
  اسکر ِ فوربز  
oskar-e Forbes
Fr.: effet Forbes  

Increased reddening and monochromaticity of light as the path length in the air increases.

See also: After the Scottish physicist James David Forbes (1809-1868); → effect.