Timerbox
Ancient Clepsydra Clock
CLEPSYDRA
Level: 30% • Water dripping steadily through hydraulic orifice

Water Clock (Clepsydra)

Historic Clepsydra Vessel Simulation•Dynamic Fluid Level Animation•Archaeological Timekeeping Insight•Interactive Fluid Dynamics

Discover the World's Earliest Precision Timekeeper

Long before mechanical pendulums and quartz crystals existed, ancient Greek, Egyptian, and Babylonian civilizations kept time using the Clepsydra — or water clock. The TimerBox Water Clock recreates this historic instrument with an interactive fluid simulation.

Watch the vessel fill steadily as regulated drops enter the basin, demonstrating the foundational physics of continuous human time measurement.

How to Use the Water Clock

1
Observe the steady hydraulic drip filling the calibrated water reservoir.
2
Track the percentage level and corresponding elapsed hours.
3
Learn about ancient outflow and inflow timekeeping principles.
4
Use fullscreen mode for classroom history and science demonstrations.

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Frequently Asked Questions

What is a Clepsydra?

A Clepsydra is an ancient instrument for measuring time by the regulated flow of liquid into (inflow) or out from (outflow) a graduated vessel.

Who invented the water clock?

Water clocks date back to ancient Egypt (circa 1500 BCE) and were later refined by Greek and Chinese engineers like Ctesibius and Su Song.

How accurate were historic water clocks?

Well-engineered water clocks were the most accurate timekeeping instruments in the ancient world, accurate within a few minutes per day.

Is this tool interactive?

Yes! You can monitor the rising water level and reset the reservoir at any time.

Ready to Use the Water Clock?

Scroll up to start using this tool immediately with zero setup required.