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  2. Liang Lingzan - Wikipedia

    en.wikipedia.org/wiki/Liang_Lingzan

    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:

  3. Su Song - Wikipedia

    en.wikipedia.org/wiki/Su_Song

    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.

  4. Traditional Chinese timekeeping - Wikipedia

    en.wikipedia.org/wiki/Traditional_Chinese...

    [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.

  5. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    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.

  6. Qiqi (tilting vessel) - Wikipedia

    en.wikipedia.org/wiki/Qiqi_(tilting_vessel)

    A recreated model of Jang Yeong-sil's automated water clock. The Chinese qiqi (欹器, "tipping vessel") was adapted for a technologically sophisticated Korean water clock during the Joseon dynasty (1392–1897). King Sejong the Great (r. 1418–1450) ordered the inventor Jang Yeong-sil to develop two automated water clocks.

  7. Escapement - Wikipedia

    en.wikipedia.org/wiki/Escapement

    Remarkably, Philo's comment that "its construction is similar to that of clocks" indicates that such escapement mechanisms were already integrated in ancient water clocks. [7] In China, the Tang dynasty Buddhist monk Yi Xing, along with government official Liang Lingzan, made the escapement in 723 (or 725) AD for the workings of a water-powered ...

  8. Water clock - Wikipedia

    en.wikipedia.org/wiki/Water_clock

    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 ...

  9. Yi Xing - Wikipedia

    en.wikipedia.org/wiki/Yi_Xing

    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.

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