Water Clock Timekeeping
Simple clepsydrae and calibrated vessels used to measure intervals or mark time in courts, religious practice, astronomy, and regulated work periods.
Core metadata
- ID: water_clock_timekeeping
- Era: Classical
- First known date: -430 (decade)
- Region: Athens, Greece; earlier Egyptian and Babylonian lineages
- Review status: source_checked
- Maturity: N/A
Prerequisites
Dependents
Fields
Field lanes
- Mechanical Engineering: Foundations & Measurement
Node sources
- Water Clocks (MacTutor History of Mathematics Archive, 2026, textbook) • Supports: node, maturity, edge
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 1
- Average edge confidence: 72%
- Prerequisite sources: 1
- textbook: 1
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Pottery (pottery) | enabling | 72% | textbook | The simplest clepsydrae were small bowls or vessels with controlled openings; pottery supplies a practical vessel-making substrate without implying that all water clocks were ceramic. |
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