what is water clock
Answers
A water clock or clepsydra is any timepiece by which time is measured by the regulated flow of liquid into or out from a vessel, and where the amount is then measured. Water clocks are one of the oldest time-measuring instruments.
Explanation:
Water clocks are one of the oldest time-measuring instruments.[1] The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon, Egypt, and Persia around the 16th century BC. Other regions of the world, including India and China, also have early evidence of water clocks, but the earliest dates are less certain. Some authors, however, claim that water clocks appeared in China as early as 4000 BC.
Uses of water clocks
Water clocks were used to determine the time. Water and irrigation are very important in arid regions. Water clocks were needed to determine the exact amount and duration of water outflow from a qanat or a well into the garden or farms. The Persians used water clocks as early as 328 BC to ensure a just and exact distribution of water from qanats to the farms and gardens of their shareholders.