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spectroheliogram

N ภาพ แสง แยก สี ของ ดวงอาทิตย์ 

 

Webster's 1913 Dictionary

SPECTROHELIOGRAM

SPECTROHELIOGRAM Spec `tro *he "li *o *gram `, n. [Spectrum + heloi- + -gram. ](Astrophysics )

 

Defn: A photograph of the sun made by monochromatic light, usually of the calcium line (k ), and showing the sun's faculæ and prominences.