"Isanmondou"

…At the age of 35, he traveled to Beijing as an attendant to his uncle, who had been appointed as a letter official, and there he interacted on an equal footing with the German Qin Tian Jiangzheng (director of the observatory). He is also known for his friendship with the three wanderers of Hangzhou, including Yan Cheng, whom he met there. What has made his name immortal is his claim that the universe is infinite, which was the first in East Asia, including the theory of the rotation of the earth (created by Jin Suk-mun half a century earlier), which is developed in his work Dialogues on Mount Bi. His complete collection includes the Book of Zhanxuan. …

*Some of the terminology explanations that refer to "Bishan Mondo" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…35歳のとき書状官に選ばれた叔父の随員として北京に旅行し，ドイツ人の欽天監正(天文台長)と対等にわたりあったこと，またこのとき出会った厳誠ら杭州の三遊士との友情は有名。彼の名を不朽にするものは作品《毉（い）山問答》中に展開されている地球自転説(創唱は半世紀前の金錫文)を含む東アジア初の宇宙無限の主張であろう。全集に《湛軒書》がある。…

※「《毉山問答》」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