oersted (unit)
E228023
The oersted is a deprecated cgs unit of magnetic field strength, historically used to measure the intensity of magnetic fields.
All labels observed (3)
| Label | Occurrences |
|---|---|
| oersted | 1 |
| oersted (CGS unit of magnetic field strength) | 1 |
| oersted (unit) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2037027 — 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: oersted (unit) Context triple: [Hans Christian Ørsted, hasHonorificName, oersted (unit)]
-
A.
Ampère (unit of electric current)
The ampere is the International System of Units (SI) base unit that quantifies electric current.
-
B.
Fermi (unit)
The fermi is a unit of length equal to one femtometer (10⁻¹⁵ meter), commonly used in nuclear and particle physics to express sizes of atomic nuclei and subatomic particles.
-
C.
Amper
The Amper is a river in Bavaria, Germany, known for flowing from the Ammersee toward the Isar and ultimately contributing to the Danube river system.
-
D.
ampere
The ampere is the SI base unit of electric current, defining the amount of electric charge passing a point in a circuit per unit time.
-
E.
Heaviside–Lorentz units
Heaviside–Lorentz units are a rationalized system of electromagnetic units commonly used in theoretical physics, especially in relativistic formulations of Maxwell’s equations and quantum field theory.
- 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: oersted (unit) Target entity description: The oersted is a deprecated cgs unit of magnetic field strength, historically used to measure the intensity of magnetic fields.
-
A.
Ampère (unit of electric current)
The ampere is the International System of Units (SI) base unit that quantifies electric current.
-
B.
Fermi (unit)
The fermi is a unit of length equal to one femtometer (10⁻¹⁵ meter), commonly used in nuclear and particle physics to express sizes of atomic nuclei and subatomic particles.
-
C.
Amper
The Amper is a river in Bavaria, Germany, known for flowing from the Ammersee toward the Isar and ultimately contributing to the Danube river system.
-
D.
ampere
The ampere is the SI base unit of electric current, defining the amount of electric charge passing a point in a circuit per unit time.
-
E.
Heaviside–Lorentz units
Heaviside–Lorentz units are a rationalized system of electromagnetic units commonly used in theoretical physics, especially in relativistic formulations of Maxwell’s equations and quantum field theory.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
CGS unit
ⓘ
non-SI unit ⓘ unit of magnetic field strength ⓘ |
| belongsTo | Gaussian units ⓘ |
| category |
CGS electromagnetic units
ⓘ
units of magnetic field ⓘ |
| conversionFromSI | 1 A/m ≈ 0.0125663706 oersted ⓘ |
| conversionToSI | 1 oersted = 79.5774715459 A/m ⓘ |
| conversionToSIApprox | 1 oersted ≈ 79.577 A/m ⓘ |
| dimension | A·L⁻¹ ⓘ |
| fieldType | magnetic field ⓘ |
| hasDimensionFormula | [I][L]⁻¹ ⓘ |
| hasDimensionSymbol | I ⓘ |
| isDeprecatedIn | modern SI practice ⓘ |
| isNonCoherentWithSI | true ⓘ |
| isPartOf |
CGS electromagnetic unit system
ⓘ
linked to:
Gaussian units
|
| isUnitOf |
H-field
ⓘ
magnetic field strength H ⓘ |
| namedAfter | Hans Christian Ørsted ⓘ |
| namedAfterNationality | Danish ⓘ |
| namedAfterOccupation | physicist ⓘ |
| physicalQuantityMeasured |
magnetic field intensity
ⓘ
magnetic field strength ⓘ |
| quantitySymbol | H ⓘ |
| relatedUnit |
gauss
ⓘ
tesla ⓘ |
| relationToGauss | in vacuum, 1 oersted corresponds to 1 gauss of magnetic flux density ⓘ |
| replacedBy | ampere per metre ⓘ |
| SIUnitEquivalent | ampere per metre ⓘ |
| spellingVariant |
Ørsted (unit name origin)
ⓘ
linked to:
Ørsted
|
| status | deprecated ⓘ |
| symbol | Oe ⓘ |
| systemOfUnits | centimetre–gram–second system of units ⓘ |
| unitNameLanguage | English ⓘ |
| unitSystem |
CGS-EMU
ⓘ
linked to:
CGS-EMU system
|
| usedHistoricallyIn |
engineering
ⓘ
physics ⓘ |
| usedIn |
electromagnetism
ⓘ
magnetism ⓘ |
| usedWith | gaussian formulation of Maxwell’s equations ⓘ |
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: oersted (unit) Description of subject: The oersted is a deprecated cgs unit of magnetic field strength, historically used to measure the intensity of magnetic fields.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: oersted (unit)
linked to: oersted (unit)