Fleming valve
E39372
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Fleming valve canonical | 3 |
| Fleming diode | 1 |
| Fleming oscillation valve | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T305597 — 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: Fleming valve Context triple: [Audion, improvedUpon, Fleming valve]
-
A.
Westinghouse air brake system
The Westinghouse air brake system is a pioneering railway braking technology that greatly improved the safety and control of trains by using compressed air to apply brakes simultaneously across all cars.
-
B.
GKN Sankey
GKN Sankey was a British engineering and manufacturing company best known for producing military vehicles and automotive components.
-
C.
Hoover
Hoover is a surname most prominently associated with Herbert Hoover, the 31st president of the United States.
-
D.
Fleming
Fleming is a surname most famously associated with Ian Fleming, the British author who created the James Bond spy novels.
-
E.
Philortyx
Philortyx is a genus of New World quails known for their ground-dwelling habits and occurrence in scrub and grassland habitats of the Americas.
- 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: Fleming valve Target entity description: 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.
-
A.
Westinghouse air brake system
The Westinghouse air brake system is a pioneering railway braking technology that greatly improved the safety and control of trains by using compressed air to apply brakes simultaneously across all cars.
-
B.
GKN Sankey
GKN Sankey was a British engineering and manufacturing company best known for producing military vehicles and automotive components.
-
C.
Hoover
Hoover is a surname most prominently associated with Herbert Hoover, the 31st president of the United States.
-
D.
Fleming
Fleming is a surname most famously associated with Ian Fleming, the British author who created the James Bond spy novels.
-
E.
Philortyx
Philortyx is a genus of New World quails known for their ground-dwelling habits and occurrence in scrub and grassland habitats of the Americas.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
electronic component
ⓘ
thermionic diode ⓘ vacuum tube ⓘ |
| alsoKnownAs |
Fleming valve
ⓘ
surface form:
Fleming diode
Fleming valve ⓘ
surface form:
Fleming oscillation valve
|
| applicationDomain |
power rectification
ⓘ
wireless communication ⓘ |
| basedOn | Edison effect ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| electricalPolarity | conducts in one direction ⓘ |
| electrodeType |
heated cathode
ⓘ
plate (anode) ⓘ |
| enables |
conversion of alternating current to direct current
ⓘ
wireless telegraphy reception ⓘ |
| era | early 20th century ⓘ |
| field |
electronics
ⓘ
radio engineering ⓘ |
| hasPart |
anode
ⓘ
cathode ⓘ evacuated glass envelope ⓘ filament ⓘ |
| historicalSignificance |
first practical vacuum tube diode
ⓘ
first widely used thermionic valve ⓘ |
| inception | 1904 ⓘ |
| influenced |
development of modern electronics
ⓘ
development of vacuum tube technology ⓘ |
| inventor | John Ambrose Fleming ⓘ |
| material | glass ⓘ |
| medium | high vacuum ⓘ |
| namedAfter | John Ambrose Fleming ⓘ |
| nonConductingDirection | reverse bias ⓘ |
| numberOfActiveElectrodes | 2 ⓘ |
| operatingPrinciple |
thermionic emission
ⓘ
unidirectional electron flow from cathode to anode ⓘ |
| patentHolder | John Ambrose Fleming ⓘ |
| patentJurisdiction |
United Kingdom
ⓘ
United States of America ⓘ
surface form:
United States
|
| patentStatus | expired ⓘ |
| powerType | thermionic ⓘ |
| replacedBy |
Audion
ⓘ
surface form:
audion triode
semiconductor diode ⓘ |
| usedFor |
demodulation
ⓘ
detection of radio signals ⓘ rectification of radio signals ⓘ |
| usedIn |
early radio receivers
ⓘ
early rectifier circuits ⓘ wireless telegraph stations ⓘ |
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: Fleming valve Description of subject: 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.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fleming oscillation valve
this entity surface form:
Fleming diode