Incandescent Light Bulb
An electric lamp producing light with a wire filament heated to incandescence by an electric current, enabling widespread, safe electric lighting.
Core metadata
- ID: light_bulb
- Era: Industrial
- First known date: 1879 (exact)
- Region: United States
- Review status: source_checked
- Maturity: N/A
Prerequisites
- Advanced Chemistry (advanced_chemistry)
- Dynamo (dynamo)
- Electricity (electricity)
- Glassmaking (glassmaking)
- Vacuum Technology (Early) (vacuum_technology_early)
Dependents
- Central Station Power (central_station_power)
- Cinematography & Motion Pictures (cinematography_motion_pictures)
- Electrical Grid (Early Distribution) (electrical_grid_early_distribution)
- Electrical Lighting Systems (electrical_lighting_systems)
- Vacuum Tubes (Electron Control) (vacuum_tubes_electron_control)
Fields
- None.
Node sources
- Edison Biography (U.S. National Park Service, 2026, official_agency) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 5
- Average edge confidence: 70%
- Prerequisite sources: 5
- expert_inference: 5
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Electricity (electricity) | enabling | 68% | expert_inference | Electricity provides a capability that enables this technology without being the only possible path. |
|
| Glassmaking (glassmaking) | enabling | 68% | expert_inference | Glassmaking provides a capability that enables this technology without being the only possible path. |
|
| Advanced Chemistry (advanced_chemistry) | enabling | 68% | expert_inference | Advanced Chemistry provides a capability that enables this technology without being the only possible path. |
|
| Dynamo (dynamo) | commercial_or_scaling_dependency | 70% | expert_inference | Central generators made Edison's lighting system practical at commercial scale; they are not a hard prerequisite for an incandescent lamp. |
|
| Vacuum Technology (Early) (vacuum_technology_early) | historical_predecessor | 75% | expert_inference | Vacuum Technology (Early) is an earlier historical predecessor or foundation, not a one-to-one engineering dependency. |
|
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