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Liang Lingzan (simplified Chinese: 梁令瓒; traditional Chinese: 梁令瓚; pinyin: Liáng Lìngzàn; Wade–Giles: Liang Ling-Tsan) was a Chinese artist, astronomer, inventor, mechanical engineer and politician of the Kaiyuan era during the Tang dynasty.
[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.
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 ...
Sundials and water clocks were first used in ancient Egypt c. 1200 BC (or equally acceptable BCE) and later by the Babylonians, the Greeks and the Chinese. Incense clocks were being used in China by the 6th century. In the medieval period, Islamic water clocks were unrivalled in their sophistication until the mid-14th century.
The incense clock (simplified Chinese: 香钟; traditional Chinese: 香鐘; pinyin: xiāngzhōng; Wade–Giles: hsiang-chung; lit. 'fragrance clock') is a timekeeping device that originated from China during the Song dynasty (960–1279) and spread to neighboring East Asian countries such as Japan and Korea.
Principle Research and Reconstruction Experiment of the Astronomical Clock Tower in Ancient China. 11th World Congress in Mechanism and machine Science. Tianjin, China. Tianjin, China. Other topics on water clocks and related material
Jin Guantao, a professor at the Chinese University of Hong Kong, Fan Hongye, a research fellow with the Chinese Academy of Sciences, and Liu Qingfeng, a professor at the Chinese University of Hong Kong, assert that the latter part of the Han dynasty was a unique period in the history of premodern Chinese science and technology. [2]
The article [Clocks] begins with sundials though with no dating information (except a ref to "ancient times") and follows this with a section on water clocks that are stated as being the oldest. The [History of Timekeeping] article begins with Egypt while much later showing China provides the earliest example of (water) clocks.