Math Logic

Question :
What is 'Clepsydras' ?

Answer :
The Alexandrians and the Chinese invented Clepsydras to replace the sundial, which were kept going by a flow of water.
It can be also termed as water clock.
The simplest water clock design, known as an outflow water clock, was basically a stone or earthenware container with a small hole in the bottom and graduated markings on the inside. As water dripped out, the water level dropped, revealing successive hour markings. Inflow designs used two containers: one to dispense the water and another, into which the water dripped, to measure it.
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