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  1. en.wikipedia.org › wiki › Water_clockWater clock - Wikipedia

    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 of liquid can then be me...

  2. 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.

  3. 29. Apr. 2024 · The most ancient water clock with tangible proof traces back to approximately 1417–1379 BC, dating back to the rule of Amenhotep III, when it was employed within the Temple of Amen-Re at Karnak. The earliest recorded mention of the water clock is found in the tomb inscription of court official Amenemhet, from the 16th century BC Egypt.

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  4. Water clocks were invented as timepieces that could be used even when the sun was not shining. Designed to allow water to escape from a vessel at a constant rate, these devices were used to measure time by the level of the remaining water.

  5. water clock. Key People: Ctesibius Of Alexandria. Related Topics: time. clock. machine. clepsydra, ancient device for measuring time by the gradual flow of water. One form, used by the North American Indians and some African peoples, consisted of a small boat or floating vessel that shipped water through a hole until it sank.