Mach cone
E90367
A Mach cone is the conical shock wave pattern produced by an object traveling through a medium at a speed faster than the speed of sound.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Mach cone canonical | 1 |
| Mach wave cone | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T756182 — 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: Mach cone Context triple: [Ernst Mach, hasEponym, Mach cone]
-
A.
Mach 1
Mach 1 is a performance-oriented version of the Ford Mustang known for its enhanced power, handling, and distinctive styling cues.
-
B.
Horn
Horn is a surname most prominently associated with English music producer and musician Trevor Horn, known for his influential work in pop and rock music.
-
C.
Blisk
Blisk is a fictional setting or universe in which the character or concept known as Blink appears or is utilized.
-
D.
Brimstone missile
The Brimstone missile is a British air-launched, precision-guided anti-armor and multi-role strike weapon designed for high accuracy against moving and static targets with minimal collateral damage.
-
E.
Messerschmitt Me 163
The Messerschmitt Me 163 was a German World War II rocket-powered interceptor aircraft, notable as the only operational rocket fighter ever deployed in combat.
- 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: Mach cone Target entity description: A Mach cone is the conical shock wave pattern produced by an object traveling through a medium at a speed faster than the speed of sound.
-
A.
Mach 1
Mach 1 is a performance-oriented version of the Ford Mustang known for its enhanced power, handling, and distinctive styling cues.
-
B.
Horn
Horn is a surname most prominently associated with English music producer and musician Trevor Horn, known for his influential work in pop and rock music.
-
C.
Blisk
Blisk is a fictional setting or universe in which the character or concept known as Blink appears or is utilized.
-
D.
Brimstone missile
The Brimstone missile is a British air-launched, precision-guided anti-armor and multi-role strike weapon designed for high accuracy against moving and static targets with minimal collateral damage.
-
E.
Messerschmitt Me 163
The Messerschmitt Me 163 was a German World War II rocket-powered interceptor aircraft, notable as the only operational rocket fighter ever deployed in combat.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
aerodynamic phenomenon
ⓘ
physical phenomenon ⓘ shock wave pattern ⓘ |
| dependsOn |
properties of the medium such as temperature and density
ⓘ
ratio of object speed to sound speed ⓘ |
| hasAlternativeName |
Mach wave cone
ⓘ
linked to:
Mach cone
sonic cone ⓘ |
| hasBoundary | shock wave ⓘ |
| hasCondition |
Mach number greater than 1
ⓘ
object speed exceeds local speed of sound ⓘ |
| hasEffect |
compression of the medium along the cone surface
ⓘ
formation of a sonic boom at ground level ⓘ sudden pressure change across the shock wave ⓘ |
| hasGeometricProperty | half-angle equals arcsin(1/M) ⓘ |
| hasParameter |
Mach angle
ⓘ
Mach number of the source ⓘ speed of sound in the medium ⓘ speed of the moving object ⓘ |
| hasRegion |
exterior where medium is undisturbed until shock passes
ⓘ
interior where disturbances cannot propagate ahead of the object ⓘ |
| hasShape | cone ⓘ |
| isDefinedAs | the conical shock wave pattern produced by an object traveling faster than the speed of sound in a medium ⓘ |
| isDescribedIn |
aerodynamics textbooks
ⓘ
compressible fluid dynamics ⓘ |
| isNamedAfter | Ernst Mach ⓘ |
| isObservedFrom | a stationary frame relative to the medium ⓘ |
| isProducedBy |
explosive blasts
ⓘ
reentry vehicles ⓘ supersonic aircraft ⓘ supersonic bullets ⓘ supersonic projectiles ⓘ |
| isRelatedTo |
Mach number
ⓘ
acoustics ⓘ aerodynamics ⓘ ballistics ⓘ compressible flow ⓘ explosions ⓘ projectiles ⓘ shock wave ⓘ sonic boom ⓘ supersonic aircraft ⓘ supersonic flow ⓘ |
| isUsedToExplain |
directionality of sonic booms
ⓘ
shock patterns around supersonic bodies ⓘ |
| occursInMedium |
air
ⓘ
any compressible fluid ⓘ water ⓘ |
| occursWhen | an object moves at supersonic speed ⓘ |
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: Mach cone Description of subject: A Mach cone is the conical shock wave pattern produced by an object traveling through a medium at a speed faster than the speed of sound.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mach cone