Zhang Heng, mathematician, astronomer and geographer of the Eastern Han Dynasty
Zhang Heng (78-139), a native of Nanyang in central China's Henan Province, was a mathematician, astronomer and geographer of the Eastern Han Dynasty (25-220).Zhang Heng was the first person in China to construct a rotating celestial globe and also the inventor of a primitive seismograph for mea...
2024-01-18