Nernst–Lamp
E183953
The Nernst–Lamp is an early type of electric lamp that used a heated ceramic rod as a light-emitting element and played a significant role in the development of incandescent lighting technology.
All labels observed (3)
| Label | Occurrences |
|---|---|
| AEG Nernst lamp | 1 |
| Nernst–Lamp canonical | 1 |
| light bulb | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1615009 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Nernst–Lamp Context triple: [Walther Nernst, notableWork, Nernst–Lamp]
-
A.
Lampa
Lampa is a commune and town in central Chile known for its semi-rural character and growing residential and industrial development near Santiago.
-
B.
Fleming valve
The Fleming valve is an early thermionic vacuum tube diode invented by John Ambrose Fleming that enabled the rectification and detection of radio signals, laying groundwork for modern electronics.
-
C.
Elster
Elster is a river in central Europe, primarily flowing through the German state of Saxony and its surrounding regions.
-
D.
Lindemann
Lindemann is a German surname most notably associated with Ferdinand von Lindemann, the mathematician who proved that π is a transcendental number.
-
E.
Electryon
Electryon is a king of Mycenae in Greek mythology, known primarily as the grandfather of the hero Heracles.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Nernst–Lamp Target entity description: The Nernst–Lamp is an early type of electric lamp that used a heated ceramic rod as a light-emitting element and played a significant role in the development of incandescent lighting technology.
-
A.
Lampa
Lampa is a commune and town in central Chile known for its semi-rural character and growing residential and industrial development near Santiago.
-
B.
Fleming valve
The Fleming valve is an early thermionic vacuum tube diode invented by John Ambrose Fleming that enabled the rectification and detection of radio signals, laying groundwork for modern electronics.
-
C.
Elster
Elster is a river in central Europe, primarily flowing through the German state of Saxony and its surrounding regions.
-
D.
Lindemann
Lindemann is a German surname most notably associated with Ferdinand von Lindemann, the mathematician who proved that π is a transcendental number.
-
E.
Electryon
Electryon is a king of Mycenae in Greek mythology, known primarily as the grandfather of the hero Heracles.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
electric lamp
ⓘ
incandescent lamp ⓘ lighting technology ⓘ |
| abbreviatedName |
Nernst–Lamp
self-linksurface differs
ⓘ
surface form:
AEG Nernst lamp
|
| category |
historical lighting device
ⓘ
pre-tungsten incandescent lamp ⓘ |
| commercialUseBegan |
around 1897
ⓘ
around 1898 ⓘ |
| countryOfOrigin | Germany ⓘ |
| declinedBecauseOf | introduction of more efficient and robust tungsten lamps ⓘ |
| developedBy | Walther Nernst ⓘ |
| doesNotRequire |
high vacuum
ⓘ
inert gas filling ⓘ |
| emitsColor | warm white light ⓘ |
| emitsLightBy | incandescence ⓘ |
| emitsSpectrum | continuous visible spectrum ⓘ |
| hasAdvantage |
higher luminous efficacy than carbon filament lamps
ⓘ
whiter light than carbon filament lamps ⓘ |
| hasDisadvantage |
complex starting mechanism
ⓘ
fragile ceramic rod ⓘ shorter service life compared to later tungsten lamps ⓘ |
| hasLightEmittingElement | heated ceramic rod ⓘ |
| historicalSignificance |
bridged gap between carbon filament and tungsten filament lamps
ⓘ
important step in development of incandescent lighting ⓘ |
| introducedInDecade | 1890s ⓘ |
| introducedInPeriod | late 19th century ⓘ |
| marketedBy | Allgemeine Elektricitäts-Gesellschaft ⓘ |
| namedAfter | Walther Nernst ⓘ |
| operatesIn | air ⓘ |
| operatingPrinciple | ceramic rod becomes electrically conductive when heated ⓘ |
| powerSource | electricity ⓘ |
| predecessorOf | tungsten filament incandescent lamps ⓘ |
| relatedTo |
Walther Nernst
ⓘ
electric lighting history ⓘ incandescent lighting ⓘ |
| replacedCarbonFilamentLamps | in some applications ⓘ |
| requires | preheating to become conductive ⓘ |
| requiresComponent | starter filament or heater ⓘ |
| technologyType | thermal radiator ⓘ |
| typicalApplicationEra | early 20th century ⓘ |
| usedBefore | widespread adoption of tungsten filament lamps ⓘ |
| usedIn |
early electric lighting installations
ⓘ
indoor lighting ⓘ street lighting ⓘ |
| usesMaterial | ceramic ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Nernst–Lamp Description of subject: The Nernst–Lamp is an early type of electric lamp that used a heated ceramic rod as a light-emitting element and played a significant role in the development of incandescent lighting technology.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
light bulb
this entity surface form:
AEG Nernst lamp