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}} Wang Fan (228–266), courtesy name Yongyuan, was an official and astronomer of the state of Eastern Wu during the Three Kingdoms period. He was from Lujiang (southwest of present-day Lujiang County, Anhui). He was proficient in mathematics and astronomy. He calculated the distance from the Sun to the Earth, but his geometric model was not correct. In addition, he give the numerical value of π as 142 / 45 = 3.155… (; ), not as accurate as the contemporary mathematician Liu Hui achieved. He was executed by Sun Hao, whom he was unable to respect. ==References== * ''三國志注 (Records of the Three Kingdoms )''. Chen Shou (or 290s ), compilation; Pei Songzhi (), annotation. 5 vols. Hong Kong: Zhonghua Publishing, 1971. 65:1453–4. * . * . 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「Wang Fan」の詳細全文を読む スポンサード リンク
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