History dating platform clock escapement my space dating tips
The bowl-shaped outflow is the simplest form of a water clock and is known to have existed in Babylon and in Egypt 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.
The word clock is derived ultimately (via Dutch, Northern French, and Medieval Latin) from the Celtic words clagan and clocca meaning "bell".These early clocks may not have used hands or dials, but “told” the time with audible signals.The word clock (from the Latin word clocca, "bell"), which gradually supersedes "horologe", suggests that it was the sound of bells which also characterized the prototype mechanical clocks that appeared during the 13th century in Europe.Water clocks, also known as clepsydrae (sg: clepsydra), along with the sundials, are possibly the oldest time-measuring instruments, with the only exceptions being the vertical gnomon and the day-counting tally stick.Given their great antiquity, where and when they first existed are not known and perhaps unknowable.
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This power was controlled by some form of oscillating mechanism, probably derived from existing bell-ringing or alarm devices.