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Water clocks are one of the oldest time-measuring instruments. [2] In ancient China, as well as throughout East Asia, water clocks were very important in the study of astronomy and astrology. The oldest written reference dates the use of the water clock in China to the 6th century BC. [3]
A water clock or clepsydra (from Ancient Greek κλεψύδρα (klepsúdra) 'pipette, water clock'; from κλέπτω (kléptō) 'to steal' and ὕδωρ (hydor) 'water'; lit. ' water thief ' ) is a timepiece by which time is measured by the regulated flow of liquid into (inflow type) or out from (outflow type) a vessel, and where the amount ...
[2] kè literally means "mark" or "engraving", referring to the marks placed on sundials [4] or water clocks [5] to help keep time. Using the definition of kè as 1 ⁄ 100 of a day, each kè is equal to 0.24 hours, 14.4 minutes, or 14 minutes 24 seconds. Every shí contains 8 1 ⁄ 3 kè, with 7 or 8 full kè and partial beginning or ending kè.
Su Song was of Hokkien ancestry [13] who was born in modern-day Fujian, near medieval Quanzhou. [14] Like his contemporary, Shen Kuo (1031–1095), Su Song was a polymath, a person whose expertise spans a significant number of different fields of study.
A Tang dynasty tomb decorated with colorful murals is providing a new glimpse into daily life in China during the 8 th century. Most interestingly, the murals show signs of Western influence ...
It was the earlier Chinese inventor Zhang Heng during the Han dynasty who was the first to apply hydraulic power (i.e. a waterwheel and water clock) in mechanically-driving and rotating his equatorial armillary sphere.
He invented a mechanized water clock with the Tantric monk and mathematician Yi Xing (Chinese: 一行; pinyin: Yī Xíng; Wade–Giles: I-Hsing). [1] [2] [3] It was actually an astronomical instrument that served as a clock, made of bronze in the capital of Chang'an in the 720s. It was described by a contemporary text this way:
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