Coulomb constant
E621085
The Coulomb constant is a fundamental physical constant that quantifies the strength of the electrostatic force between two point electric charges in vacuum.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Coulomb constant canonical | 2 |
| Coulomb’s law constant | 1 |
| electrostatic constant | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6832887 — 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: Coulomb constant Context triple: [Coulomb's law, involvesQuantity, Coulomb constant]
-
A.
Coulomb's law
Coulomb's law is a fundamental principle of electrostatics that quantifies the electric force between two point charges as being proportional to the product of their charges and inversely proportional to the square of the distance between them.
-
B.
coulomb
The coulomb is the SI unit of electric charge, representing the quantity of charge transported by a one-ampere current in one second.
-
C.
Faraday constant
The Faraday constant is a fundamental physical constant representing the electric charge carried by one mole of electrons, widely used in electrochemistry and physics.
-
D.
fine-structure constant
The fine-structure constant is a fundamental dimensionless constant of nature that characterizes the strength of the electromagnetic interaction between charged particles.
-
E.
Boltzmann constant
The Boltzmann constant is a fundamental physical constant that links temperature to energy at the particle level, playing a central role in statistical mechanics and thermodynamics.
- 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: Coulomb constant Target entity description: The Coulomb constant is a fundamental physical constant that quantifies the strength of the electrostatic force between two point electric charges in vacuum.
-
A.
Coulomb's law
Coulomb's law is a fundamental principle of electrostatics that quantifies the electric force between two point charges as being proportional to the product of their charges and inversely proportional to the square of the distance between them.
-
B.
coulomb
The coulomb is the SI unit of electric charge, representing the quantity of charge transported by a one-ampere current in one second.
-
C.
Faraday constant
The Faraday constant is a fundamental physical constant representing the electric charge carried by one mole of electrons, widely used in electrochemistry and physics.
-
D.
fine-structure constant
The fine-structure constant is a fundamental dimensionless constant of nature that characterizes the strength of the electromagnetic interaction between charged particles.
-
E.
Boltzmann constant
The Boltzmann constant is a fundamental physical constant that links temperature to energy at the particle level, playing a central role in statistical mechanics and thermodynamics.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
electromagnetic constant
ⓘ
physical constant ⓘ |
| alsoKnownAs |
Coulomb’s law constant
ⓘ
linked to:
Coulomb constant
electrostatic constant ⓘ
linked to:
Coulomb constant
|
| appearsIn |
Coulomb’s law
ⓘ
linked to:
Coulomb's law
|
| appearsInEquation |
E = k_e q / r^2
ⓘ
F = k_e q_1 q_2 / r^2 ⓘ U = k_e q_1 q_2 / r ⓘ |
| appliesTo | point charges in vacuum ⓘ |
| approximateValue | 9.0×10^9 N·m^2·C^−2 ⓘ |
| defines | strength of electrostatic interaction between two point charges in vacuum ⓘ |
| dependsOn | vacuum permittivity ⓘ |
| dimension | M^1 L^3 T^−4 I^−2 ⓘ |
| governs |
magnitude of electrostatic force between point charges
ⓘ
potential energy between point charges ⓘ |
| hasUncertainty | 3.0×10^−10 relative (CODATA 2018) ⓘ |
| hasUnit | N·m^2·C^−2 ⓘ |
| hasValue | 8.9875517923×10^9 ⓘ |
| independentOf |
charge magnitude scaling (linear in product q_1 q_2)
ⓘ
charge sign ⓘ |
| isContextDependent | true in choice of electromagnetic units ⓘ |
| isExact | false ⓘ |
| isFinite | true ⓘ |
| isFundamentalIn | inverse-square law of electrostatics ⓘ |
| isHomogeneousInSpace | true ⓘ |
| isHomogeneousInTime | true ⓘ |
| isIsotropic | true ⓘ |
| isPositive | true ⓘ |
| isScalar | true ⓘ |
| namedAfter | Charles-Augustin de Coulomb ⓘ |
| relatedFormula | k_e = 1 / (4π ε_0) ⓘ |
| relatedTo |
Maxwell’s equations
ⓘ
linked to:
Maxwell's equations
electric field of a point charge ⓘ elementary charge ⓘ fine-structure constant ⓘ vacuum permittivity ε_0 ⓘ |
| symbol |
k
ⓘ
k_e ⓘ |
| systemOfUnits | SI ⓘ |
| usedIn |
atomic physics
ⓘ
classical electromagnetism ⓘ electrostatics ⓘ molecular physics ⓘ plasma physics ⓘ |
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: Coulomb constant Description of subject: The Coulomb constant is a fundamental physical constant that quantifies the strength of the electrostatic force between two point electric charges in vacuum.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Coulomb constant
linked to: Coulomb constant