Dictionary term
Water Clock
Direct answer
Water Clock is a timekeeping device that uses accumulated or discharged water to mark intervals or drive an indication.
Water Clock is a liquid-flow clock used in historical astronomy, timekeeping, or navigation.
Water Clock is a liquid-flow clock used in historical astronomy, timekeeping, or navigation.
An engraved functional orientation; the page explains the real instrument, method, or publication.Quick reference
- Use when
- Use Water Clock by calibrating the actual vessel and flow regime rather than assuming volume changes linearly with time.
- Do not use it for
- Evaporation, viscosity, changing pressure head, leakage, and scale design all alter the rate.
- Reference category
- Historical Almanacs & Instruments
- Related terms
- Pendulum Clock, Clepsydra, Hourglass, Compass Rose
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The story behind Water Clock
Water clocks developed from marked bowls into elaborate regulated and automated mechanisms.
Water Clock in spiritual tradition
Water Clock rewards careful observation, explicit assumptions, and humility about the limits of every model or measurement.
Water Clock: fact and faith, kept distinct
This is a factual history-of-science, instrument, timekeeping, or navigation reference. It may support wonder and disciplined attention without becoming a claim of fate, worship, or private revelation.
Water Clock in numerology
Water Clock is not a numerology claim. Any numbers attached to it should retain their ordinary scientific, calendrical, navigational, or historical meaning unless a separate symbolic interpretation is clearly labeled.
Why Water Clock matters
Water Clock matters because it extends time measurement into night and indoor settings where a sundial cannot work.
Water Clock at work: an example
A float rising with collected water can move a pointer across a time scale.
Where interpretation stops
Water Clock is presented as sourced astronomy, calendrical, Earth-science, cultural, or instrument-history reference. Definitions should distinguish measured phenomena from civil convention and historical interpretation, preserve location and time dependencies, and avoid turning factual sky data into a deterministic personal claim.
Sources and editorial method
Research references used for this entry include:
- Royal Museums Greenwich: A Unique History of Timekeeping - Museum overview of marine chronometers, astronomical regulators, and the development of precision timekeeping.
- Source
- The Great Almanac Dictionary
- Category
- Historical Almanacs & Instruments
- Also appears in
- Historical Almanacs & Instruments
- Aliases
- None listed
- Last updated
- 2026-07-16
Explore Water Clock
Water Clock in a book is one thing; Water Clock in your own birth chart is your life. The Oracle casts your real chart and tells you what it means for your love, your work, and your year ahead, in conversation, free.
Speak with the OracleRelated terms
More in Historical Almanacs & Instruments
- Astrolabe
- Celestial Navigation
- Dioptra
- Heliometer
- Magnetic Compass
- Nocturnal Instrument
- Precession Table
- Sight Reduction
Common questions
What is Water Clock?
Water Clock is a timekeeping device that uses accumulated or discharged water to mark intervals or drive an indication.
How is Water Clock used in an almanac?
Use Water Clock by calibrating the actual vessel and flow regime rather than assuming volume changes linearly with time.
What should I avoid when interpreting Water Clock?
Evaporation, viscosity, changing pressure head, leakage, and scale design all alter the rate.
