Wien displacement constant
E166683
The Wien displacement constant is the proportionality constant that relates the temperature of a black body to the wavelength at which it emits radiation most intensely.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Wien displacement constant canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1462808 — 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: Wien displacement constant Context triple: [Wien displacement law, hasConstant, Wien displacement constant]
-
A.
Wien displacement law
Wien's displacement law is a physical law that relates the temperature of a blackbody to the wavelength at which it emits radiation most intensely.
-
B.
Stefan–Boltzmann constant
The Stefan–Boltzmann constant is a fundamental physical constant that relates the total energy radiated per unit surface area of a black body to the fourth power of its absolute temperature.
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C.
Planck radiation law
Planck radiation law is a fundamental formula in quantum physics that describes the spectral distribution of electromagnetic radiation emitted by a black body in thermal equilibrium.
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D.
Stefan–Boltzmann law
The Stefan–Boltzmann law is a fundamental principle of thermal radiation stating that the total energy radiated per unit surface area of a black body is proportional to the fourth power of its absolute temperature.
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E.
Kirchhoff's law of thermal radiation
Kirchhoff's law of thermal radiation is a fundamental principle in thermodynamics stating that, for a body in thermal equilibrium, its emissivity equals its absorptivity at each wavelength.
- 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: Wien displacement constant Target entity description: The Wien displacement constant is the proportionality constant that relates the temperature of a black body to the wavelength at which it emits radiation most intensely.
-
A.
Wien displacement law
Wien's displacement law is a physical law that relates the temperature of a blackbody to the wavelength at which it emits radiation most intensely.
-
B.
Stefan–Boltzmann constant
The Stefan–Boltzmann constant is a fundamental physical constant that relates the total energy radiated per unit surface area of a black body to the fourth power of its absolute temperature.
-
C.
Planck radiation law
Planck radiation law is a fundamental formula in quantum physics that describes the spectral distribution of electromagnetic radiation emitted by a black body in thermal equilibrium.
-
D.
Stefan–Boltzmann law
The Stefan–Boltzmann law is a fundamental principle of thermal radiation stating that the total energy radiated per unit surface area of a black body is proportional to the fourth power of its absolute temperature.
-
E.
Kirchhoff's law of thermal radiation
Kirchhoff's law of thermal radiation is a fundamental principle in thermodynamics stating that, for a body in thermal equilibrium, its emissivity equals its absorptivity at each wavelength.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
physical constant
ⓘ
radiation constant ⓘ thermodynamic constant ⓘ |
| appearsIn |
Wien displacement law
ⓘ
surface form:
Wien's displacement law
|
| appliesTo | ideal black body ⓘ |
| category |
astrophysical constants
ⓘ
black-body radiation ⓘ physical constants ⓘ thermodynamics ⓘ |
| definesRelation | λ_max = b / T ⓘ |
| dependsOn |
Boltzmann constant
ⓘ
Planck constant ⓘ speed of light in vacuum ⓘ |
| describes | relationship between black-body temperature and peak emission wavelength ⓘ |
| field |
quantum theory of radiation
ⓘ
statistical mechanics ⓘ thermal physics ⓘ |
| governs | shift of black-body peak wavelength with temperature ⓘ |
| hasApproximateValue |
2.897771955×10^-3 m·K
ⓘ
2.8978×10^-3 m·K ⓘ |
| hasDimension | length × temperature ⓘ |
| hasSIUnit | metre kelvin ⓘ |
| isInverseProportionalityFactorBetween | temperature and peak wavelength ⓘ |
| isNamedInHonorOf | Wilhelm Wien ⓘ |
| isPartOf |
Planck radiation law
ⓘ
surface form:
Planck's law of black-body radiation
|
| isTabulatedIn | CODATA recommended values of the fundamental physical constants ⓘ |
| isUsedFor |
characterizing black-body spectra
ⓘ
converting peak emission wavelength to temperature ⓘ |
| isUsedToEstimate |
surface temperature of stars
ⓘ
temperature of hot objects from emission spectrum ⓘ |
| namedAfter | Wilhelm Wien ⓘ |
| relatedConcept |
Stefan–Boltzmann law
ⓘ
black-body temperature ⓘ spectral radiance ⓘ |
| relatedLaw |
Planck radiation law
ⓘ
surface form:
Planck's radiation law
Wien displacement law ⓘ
surface form:
Wien's displacement law
|
| relatesQuantity |
temperature
ⓘ
wavelength of maximum spectral radiance ⓘ |
| symbol | b ⓘ |
| usedIn |
astrophysics
ⓘ
black-body radiation ⓘ cosmology ⓘ infrared thermometry ⓘ remote sensing ⓘ thermal radiation calculations ⓘ |
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: Wien displacement constant Description of subject: The Wien displacement constant is the proportionality constant that relates the temperature of a black body to the wavelength at which it emits radiation most intensely.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.