| 1. | There were several types of water clocks, some more elaborate than others.
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| 2. | They had quite accurate water clocks as well as hourglasses and sundials.
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| 3. | The name Clepsydra is derived from the Greek word for water clock.
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| 4. | Jang's invention of the water clock saw its infusion throughout the country.
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| 5. | A water clock or wooden pendulum would not have the precision demanded.
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| 6. | To measure this pulse, he made use of a water clock.
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| 7. | Measurement of shorter periods of time began with sundials, sandglasses and water clocks.
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| 8. | It should begin with Greek water clocks and end with Plato's alarm clocks.
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| 9. | There are two types of water clocks : inflow and outflow.
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| 10. | The articles i have read about water clocks say they use sloping sides.
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