Edison effect
E198176
The Edison effect is the phenomenon in which electrons are emitted from a heated filament into a vacuum, forming the basis for early vacuum tubes and thermionic devices.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Edison effect canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1785070 — 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: Edison effect Context triple: [Fleming valve, basedOn, Edison effect]
-
A.
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.
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B.
Edison
Edison is a large, diverse township in central New Jersey known for its suburban communities, major transportation links, and historical association with inventor Thomas Edison.
-
C.
The Edison
The Edison is an industrial gothic-style restaurant and bar at Disney Springs known for its 1920s theming, craft cocktails, and live entertainment.
-
D.
Nernst–Lamp
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.
-
E.
Alexanderson alternator
The Alexanderson alternator is an early high-frequency radio transmitter that generated continuous-wave signals using a rotating machine, playing a key role in long-distance wireless communication before vacuum-tube oscillators.
- 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: Edison effect Target entity description: The Edison effect is the phenomenon in which electrons are emitted from a heated filament into a vacuum, forming the basis for early vacuum tubes and thermionic devices.
-
A.
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.
-
B.
Edison
Edison is a large, diverse township in central New Jersey known for its suburban communities, major transportation links, and historical association with inventor Thomas Edison.
-
C.
The Edison
The Edison is an industrial gothic-style restaurant and bar at Disney Springs known for its 1920s theming, craft cocktails, and live entertainment.
-
D.
Nernst–Lamp
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.
-
E.
Alexanderson alternator
The Alexanderson alternator is an early high-frequency radio transmitter that generated continuous-wave signals using a rotating machine, playing a key role in long-distance wireless communication before vacuum-tube oscillators.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
physical phenomenon
ⓘ
thermionic emission phenomenon ⓘ |
| alsoKnownAs | thermionic emission in vacuum ⓘ |
| category |
electron emission
ⓘ
vacuum tube phenomena ⓘ |
| chargeCarrier | electron ⓘ |
| describedIn | Edison’s 1883 patent on electric lamps ⓘ |
| discoveredBy |
Thomas Alva Edison
ⓘ
surface form:
Thomas Edison
|
| discoveryYear | 1883 ⓘ |
| formsBasisOf |
diode vacuum tubes
ⓘ
early electronic rectifiers ⓘ early radio detection devices ⓘ thermionic power converters ⓘ thermionic valves ⓘ triode vacuum tubes ⓘ vacuum tube technology ⓘ |
| governedBy | thermionic emission laws ⓘ |
| hasCause | thermal energy overcoming electron binding in metal ⓘ |
| hasDomain |
electronics
ⓘ
solid-state and device physics ⓘ vacuum electronics ⓘ |
| hasEffect |
electron flow through vacuum
ⓘ
unidirectional current between filament and plate ⓘ |
| hasPhysicalMedium |
evacuated glass envelope
ⓘ
metal filament ⓘ |
| historicalSignificance |
early step toward electronic amplification
ⓘ
led to invention of vacuum tube diode ⓘ |
| involves |
anode
ⓘ
cathode ⓘ emission of electrons ⓘ heated filament ⓘ |
| namedAfter | Thomas Alva Edison ⓘ |
| notObservedWhen | anode is at negative potential relative to filament ⓘ |
| observedIn | incandescent lamp with additional electrode ⓘ |
| observedWhen | anode is at positive potential relative to filament ⓘ |
| occursIn | vacuum ⓘ |
| precedes | development of triode by Lee de Forest ⓘ |
| relatedTo |
Richardson–Dushman equation
ⓘ
field emission ⓘ photoelectric effect ⓘ |
| requires |
electrical potential difference
ⓘ
high temperature ⓘ |
| temperatureDependence | emission current increases with filament temperature ⓘ |
| usedFor |
current rectification
ⓘ
detection of radio-frequency signals ⓘ measurement of high vacuum quality ⓘ |
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: Edison effect Description of subject: The Edison effect is the phenomenon in which electrons are emitted from a heated filament into a vacuum, forming the basis for early vacuum tubes and thermionic devices.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.