equant

Japanese: equant
equant

…When it was introduced to the Latin world in the 12th century (the most famous example was by Gerard of Cremona (c. 1114-87) in 1175), the title was the Latin Almagestum. The system, which uses devices such as epicycles, eccentrics, and equants, is an extremely sophisticated mathematical model for describing celestial phenomena. The possibility of a heliocentric system is also discussed. …

*Some terminology explanations that mention "equant" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…12世紀にラテン世界に紹介(1175年のクレモナのジェラルドGerard of Cremona(1114ころ‐87)によるものが著名)されたときも,標題はラテン語の《Almagestum》であった。周転円,離心円,擬心(エカントequant)などのしかけを使った体系は,天体現象を記述する数学的モデルとしてはきわめて精緻(せいち)である。ここでは太陽中心的体系の可能性も論じられている。…

※「equant」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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