Wien displacement law
E31550
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Wien's displacement law | 4 |
| Wien displacement law canonical | 1 |
| Wien's radiation law | 1 |
| Wien’s displacement law | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T243946 — 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 law Context triple: [Planck radiation law, relatedTo, Wien displacement law]
-
A.
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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B.
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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C.
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.
-
D.
Maxwell–Boltzmann statistics
Maxwell–Boltzmann statistics is a classical statistical framework in physics that describes the distribution of speeds or energies among distinguishable, non-quantum particles in thermal equilibrium.
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E.
Einstein coefficients
Einstein coefficients are parameters in quantum theory that quantify the probabilities of absorption, spontaneous emission, and stimulated emission of radiation by atoms or molecules.
- 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 law Target entity description: 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.
-
A.
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.
-
B.
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.
-
C.
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.
-
D.
Maxwell–Boltzmann statistics
Maxwell–Boltzmann statistics is a classical statistical framework in physics that describes the distribution of speeds or energies among distinguishable, non-quantum particles in thermal equilibrium.
-
E.
Einstein coefficients
Einstein coefficients are parameters in quantum theory that quantify the probabilities of absorption, spontaneous emission, and stimulated emission of radiation by atoms or molecules.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
empirical law
ⓘ
law of black-body radiation ⓘ physical law ⓘ |
| appliesTo | blackbody ⓘ |
| approximationOf | Planck radiation law ⓘ |
| assumes |
continuous spectrum
ⓘ
isotropic emission ⓘ |
| category |
laws of physics
ⓘ
radiation laws ⓘ |
| constantApproximateValue | 2.897771955×10^-3 m·K ⓘ |
| constantSymbol | b ⓘ |
| describes | relationship between blackbody temperature and peak emission wavelength ⓘ |
| domain | thermal equilibrium ⓘ |
| field |
astrophysics
ⓘ
statistical mechanics ⓘ thermal radiation ⓘ thermodynamics ⓘ |
| hasConsequence |
color of a blackbody shifts from red to blue as temperature increases
ⓘ
peak of solar spectrum lies in visible range due to Sun’s surface temperature ⓘ |
| hasConstant | Wien displacement constant ⓘ |
| hasEquation |
λ_max = b / T
ⓘ
ν_max ≈ (k_B T)/h (for frequency form, approximate) ⓘ |
| hasSIUnitForConstant | meter kelvin ⓘ |
| implies |
cooler bodies emit peak radiation at longer wavelengths
ⓘ
hotter bodies emit peak radiation at shorter wavelengths ⓘ |
| isPartOf | black-body radiation theory ⓘ |
| namedAfter | Wilhelm Wien ⓘ |
| namedEntityType | scientific law ⓘ |
| predicts | wavelength of peak emission for a blackbody at given temperature ⓘ |
| relatedTo |
Planck radiation law
ⓘ
Rayleigh–Jeans law at low frequencies ⓘ
surface form:
Rayleigh–Jeans law
Stefan–Boltzmann law ⓘ |
| relatesQuantity |
temperature
ⓘ
wavelength of maximum spectral radiance ⓘ |
| supportsConcept | color–temperature relation of stars ⓘ |
| symbolicForm | λ_max T = b ⓘ |
| usedFor |
design of thermal radiation sources
ⓘ
estimating surface temperature of stars from color ⓘ estimating temperature of incandescent objects from emission spectrum ⓘ infrared thermometry ⓘ thermal imaging calibration ⓘ |
| validFor | ideal blackbody ⓘ |
| yearProposed | 1893 ⓘ |
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 law Description of subject: 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.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Wien’s displacement law
this entity surface form:
Wien's displacement law
this entity surface form:
Wien's displacement law
this entity surface form:
Wien's radiation law
this entity surface form:
Wien's displacement law
this entity surface form:
Wien's displacement law