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・ Eucrotala
・ Eucryphia
・ Eucryphia cordifolia
・ Eucryphia glutinosa
・ Eucryphia jinksii
・ Eucryphia lucida
・ Eucryphia milliganii
・ Eucryphia moorei
・ Eucryphia wilkiei
・ Eucrypta
・ Eucrypta chrysanthemifolia
・ Eucrypta micrantha
・ Eucryptite
・ Eucryptogona
・ Eucryptogona trichobathra
Euctemon
・ Euctemon (crater)
・ Euctenidiacea
・ Eucteniza
・ Euctenizidae
・ Euctenospila
・ Euctenostega
・ Eucumbene Dam
・ Eucumbene River
・ Eucyanoides
・ Eucyclidae
・ Eucyclodes
・ Eucyclodes buprestaria
・ Eucyclodes gavissima
・ Eucyclodes sanguilineata


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Euctemon : ウィキペディア英語版
Euctemon

Euctemon (fl. 432 BC) was an Athenian astronomer. He was a contemporary of Meton and worked closely with this astronomer. Little is known of his work apart from his partnership with Meton and what is mentioned by Ptolemy. With Meton, he made a series of observations of the solstices (the points at which the sun is at greatest distance from the equator) in order to determine the length of the tropical year. Geminus and Ptolemy quote him as a source on the rising and setting of the stars. Pausanius's ''Description of Greece'' names Damon and Philogenes and Euctemon's children.
The lunar crater Euctemon is named after him.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Euctemon」の詳細全文を読む



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