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A water clock or clepsydra (from Ancient Greek κλεψύδρα (klepsúdra) 'pipette, water clock'; from κλέπτω (kléptō) 'to steal', and ὕδωρ (hydor) 'water';...

range of duration timers, a well-known example being the hourglass. Water clocks, along with sundials, are possibly the oldest time-measuring instruments...

clock mechanisms in astronomical clocks in the 10th and 11th centuries, respectively. A striking clock outside of China was the water-powered clock tower...

time by continuous processes, such as the flow of liquid in water clocks, to mechanical clocks, and eventually repetitive, oscillatory processes, such as...

The elephant clock was a model of water clock invented by the medieval Islamic engineer Ismail al-Jazari (1136–1206). Its design was detailed in his book...

This is a bibliography of water clocks. Barnett, Jo Ellen (1998). Time's Pendulum: From Sundials to Atomic Clocks, the Fascinating History of Timekeeping...

by al-Jazari, who employed them in his automata, water clocks (such as the candle clock) and water-raising machines. The eccentrically mounted handle...

Clock towers are a specific type of structure that house a turret clock and have one or more clock faces on the upper exterior walls. Many clock towers...

The Hornsby Water Clock, titled Man, Time and the Environment is a piece of kinetic sculpture, a decorative fountain and a functional clock in the Florence...

of water clocks had been established during the Three Kingdoms period. The Korean water clock consisted of two stacked jars of water, with water dropping...

12-hour clock can be traced back as far as Mesopotamia and ancient Egypt. Both an Egyptian sundial for daytime use and an Egyptian water clock for night-time...

The Water Clock, also known as The Giant Water Clock, is in the permanent collection of The Children's Museum of Indianapolis located in Indianapolis,...

The Clock of Flowing Time (German: Uhr der fließenden Zeit) is a 13 metres (43 ft) high water clock extending over three floors in the Berlin Europa-Center...

A turret clock or tower clock is a clock designed to be mounted high in the wall of a building, usually in a clock tower, in public buildings such as...

changes to water clocks to accommodate this. However, these were changes to the time divisions of the day rather than setting the whole clock forward. In...

The Jayrun Water Clock, a water clock built by the Muslim engineer Muhammad al-Sa'ati, was positioned at the gate of Damascus, Syria, at the exit of the...

of all-mechanical clocks. This caused a shift from measuring time by continuous processes, such as the flow of liquid in water clocks, to repetitive, oscillatory...

origin of the hourglass is unclear. Its predecessor the clepsydra, or water clock, is known to have existed in Babylon and Egypt as early as the 16th century...

variety of means such as a pendulum. Alarm clocks first appeared in ancient Greece around 250 BC with a water clock that would set off a whistle. This idea...

The Borugak Jagyeongnu ("Water Clock of Borugak Pavilion"), classified as a scientific instrument, is the 229th National Treasure of South Korea and was...