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The Han dynasty (206 BCE – 220 CE) of early imperial China, divided between the eras of Western Han (206 BCE – 9 CE, when the capital was at Chang'an), the Xin dynasty of Wang Mang (r. 9–23 CE), and Eastern Han (25–220 CE, when the capital was at Luoyang, and after 196 CE at Xuchang), witnessed some of the most significant advancements ...
The Chinese astronomer Geng Shouchang of the Han dynasty (202 BC – 220 AD) invented it separately in China in 52 BC, and the Han dynasty polymath Zhang Heng (78–139 AD) was the first to apply motive power using a set of complex gears rotated by a waterwheel which was powered by the constant pressure head of an inflow clepsydra clock, the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 February 2025. Imperial dynasty in China (202 BC – 220 AD) "Eastern Han" and "House of Liu" redirect here. For the Five Dynasties-era kingdom, see Northern Han. For other uses, see House of Liu (disambiguation). Han 漢 202 BC – 9 AD; 25–220 AD (9–23 AD: Xin) The Western Han dynasty in 2 AD ...
One of the earliest accounts was a description by the Han dynasty philosopher Wang Chong (A.D. 27–97) around A.D. 80. [9] Unlike those found in the West, chain pumps in China resembled the square-pallet type instead of the pear-shaped bucket [dubious – discuss]. Illustrations of such Chinese chain pumps show them drawing water up a slanted ...
The Han dynasty ruled in an era of Chinese cultural consolidation, political experimentation, relative economic prosperity and maturity, and great technological advances. There was unprecedented territorial expansion and exploration initiated by struggles with non-Chinese peoples, especially the nomadic Xiongnu of the Eurasian Steppe.
The Han dynasty general Ma Yuan (14 BC – 49 AD) is recorded as having made a raised-relief map of valleys and mountains in a rice-constructed model of 32 AD. [34] Shen Kuo's largest atlas included twenty three maps of China and foreign regions that were drawn at a uniform scale of 1:900,000. [ 6 ]
Cai Lun (Chinese: 蔡 伦; courtesy name: Jingzhong (敬 仲); c. 50–62 – 121 CE), formerly romanized as Ts'ai Lun, was a Chinese eunuch court official of the Eastern Han dynasty. He occupies a pivotal place in the history of paper due to his addition of pulp via tree bark and hemp ends which resulted in the large-scale manufacture and ...
Ding Huan (Chinese: 丁緩) was a Chinese craftsman, mechanical engineer, and inventor who lived in the first century CE during the Han dynasty. Among the inventions attributed to him is an air conditioning system based on evaporative cooling .