| 11. | However, the most common type of public and palace timekeeping device was the inflow clepsydra.
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| 12. | Unlike the clepsydra, the motion of the ship while sailing did not affect the hourglass.
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| 13. | Today, in Beijing's Drum Tower an outflow clepsydra is operational and displayed for tourists.
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| 14. | A water clock, also known as a clepsydra, uses a flow of water to measure time.
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| 15. | They introduced several types of the inflow clepsydra, one of which included the earliest feedback control system.
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| 16. | Before very long, however, Gaffney is exposed as the murderer of Clepsydra when attempting to interrogate Dreyfus.
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| 17. | Water clocks or clepsydra measure a gain or loss of water by using drops of uniform size and frequency.
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| 18. | The explanation of a " clepsydra " or water clock was a popular topic in the Middle Ages.
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| 19. | This was used alongside a clepsydra clock and waterwheel to power a rotating armillary sphere in representation of astronomical observation.
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| 20. | In both Greek and Roman times, this type of clepsydra was used in courts for allocating periods of time to speakers.
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