Geared Calculating Devices
Hellenistic geared astronomical calculators, anchored by the Antikythera Mechanism, that used bronze gear trains and dials to model calendars and celestial cycles.
Core metadata
- ID: geared_calculating_devices
- Era: Classical
- First known date: -150 (century)
- Region: Hellenistic Greek Mediterranean / Antikythera wreck context
- Review status: source_checked
- Maturity: established
Prerequisites
- Early Astronomical Observation (early_astronomy_observation)
- Hellenistic Toothed Gears (gears_simple_classical)
- Mathematics (mathematics)
Dependents
Fields
Field lanes
- Mechanical Engineering: Mechanisms & Machines
Node sources
- Decoding the ancient Greek astronomical calculator known as the Antikythera Mechanism (Nature, 2006, primary_paper) • Supports: node, maturity, edge
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 3
- Average edge confidence: 83%
- Prerequisite sources: 3
- primary_source: 3
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Hellenistic Toothed Gears (gears_simple_classical) | required | 90% | primary_source | The Antikythera Mechanism is explicitly a geared device, so gear-making is a core component dependency for this scoped node. |
|
| Early Astronomical Observation (early_astronomy_observation) | historical_predecessor | 80% | primary_source | The device calculated and displayed celestial cycles, making earlier astronomical observation and cycle knowledge historical foundations. |
|
| Mathematics (mathematics) | enabling | 78% | primary_source | The mechanism encoded astronomical cycles through gear ratios and dial scales, so mathematical modeling enabled the device without being a single artifact dependency. |
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