Wang Fan

Who is Wang Fan?

Wang Fan, courtesy name Yongyuan, was an official and astronomer of the state of Eastern Wu during the Three Kingdoms period. He was from Lujiang. 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.