Bohr magneton
E143963
The Bohr magneton is a fundamental physical constant that represents the natural unit of the electron’s magnetic moment in atomic physics.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Bohr magneton canonical | 7 |
| Bohr magneton μ_B | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1250438 — 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: Bohr magneton Context triple: [reduced Planck constant, relatedQuantity, Bohr magneton]
-
A.
Planck constant
The Planck constant is a fundamental physical constant that quantifies the relationship between the energy of a photon and the frequency of its associated electromagnetic wave, forming a cornerstone of quantum mechanics.
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B.
Curie law of magnetization
The Curie law of magnetization is a fundamental principle in magnetism stating that the magnetic susceptibility of a paramagnetic material is inversely proportional to its absolute temperature.
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C.
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.
-
D.
reduced Planck constant
The reduced Planck constant (ħ) is a fundamental physical constant that quantifies the scale of quantum effects, commonly appearing in formulations of quantum mechanics and quantum field theory.
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E.
Fermi constant
The Fermi constant is a fundamental physical constant that quantifies the strength of the weak nuclear force in processes such as beta decay.
- 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: Bohr magneton Target entity description: The Bohr magneton is a fundamental physical constant that represents the natural unit of the electron’s magnetic moment in atomic physics.
-
A.
Planck constant
The Planck constant is a fundamental physical constant that quantifies the relationship between the energy of a photon and the frequency of its associated electromagnetic wave, forming a cornerstone of quantum mechanics.
-
B.
Curie law of magnetization
The Curie law of magnetization is a fundamental principle in magnetism stating that the magnetic susceptibility of a paramagnetic material is inversely proportional to its absolute temperature.
-
C.
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.
-
D.
reduced Planck constant
The reduced Planck constant (ħ) is a fundamental physical constant that quantifies the scale of quantum effects, commonly appearing in formulations of quantum mechanics and quantum field theory.
-
E.
Fermi constant
The Fermi constant is a fundamental physical constant that quantifies the strength of the weak nuclear force in processes such as beta decay.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
magnetic moment unit
ⓘ
physical constant ⓘ |
| appearsIn |
Schrödinger equation solutions for hydrogen-like atoms
ⓘ
Zeeman Hamiltonian ⓘ
linked to:
Zeeman effect
spin Hamiltonians ⓘ |
| appliesTo | electron ⓘ |
| category |
fundamental constants
ⓘ
magnetism ⓘ |
| definedAs | eħ/2me ⓘ |
| dependsOn |
electron rest mass
ⓘ
elementary charge ⓘ reduced Planck constant ⓘ |
| field |
atomic physics
ⓘ
condensed matter physics ⓘ quantum mechanics ⓘ |
| hasDimension | energy per magnetic field ⓘ |
| hasPhysicalMeaning | magnetic moment of an electron in the first Bohr orbit (non-relativistic model) ⓘ |
| hasSIUnit | joule per tesla ⓘ |
| hasSIUnitSymbol | J·T⁻¹ ⓘ |
| isConstantIn | SI units ⓘ |
| isFundamentalFor |
magnetic properties of electrons
ⓘ
magneto-transport phenomena ⓘ spin physics ⓘ |
| isInverselyProportionalTo |
electron mass
ⓘ
speed of light (in Gaussian units definition) ⓘ |
| isMuchLargerThan | nuclear magneton ⓘ |
| isProportionalTo | electron charge ⓘ |
| isReferencedIn | CODATA recommended values of the fundamental physical constants ⓘ |
| isUsedFor |
Zeeman effect calculations
ⓘ
expressing electron orbital magnetic moments ⓘ expressing electron spin magnetic moments ⓘ paramagnetism analysis ⓘ solid state physics calculations ⓘ |
| namedAfter | Niels Bohr ⓘ |
| relatedTo | nuclear magneton ⓘ |
| represents | natural unit of the electron magnetic moment ⓘ |
| symbol | μB ⓘ |
| usedAsUnitFor |
magnetic moments of atoms
ⓘ
magnetic moments of electrons in solids ⓘ magnetic moments of ions ⓘ |
| usedIn |
Landé g-factor expressions
ⓘ
atomic spectroscopy ⓘ electron paramagnetic resonance ⓘ magnetic susceptibility formulas ⓘ |
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: Bohr magneton Description of subject: The Bohr magneton is a fundamental physical constant that represents the natural unit of the electron’s magnetic moment in atomic physics.
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.
CODATA recommended values of the fundamental physical constants
→
includesConstant
→
Bohr magneton
ⓘ
linked to: Bohr magneton