Planck–Einstein relation
E154876
The Planck–Einstein relation is a fundamental quantum physics formula that links a photon's energy to its frequency, marking a key step in the development of quantum theory.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Planck–Einstein relation canonical | 2 |
| Planck postulate | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1348245 — 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: Planck–Einstein relation Context triple: [Planck constant, appearsInEquation, Planck–Einstein relation]
-
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.
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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C.
Sackur–Tetrode equation
The Sackur–Tetrode equation is a fundamental formula in statistical mechanics that gives the absolute entropy of an ideal monatomic gas in terms of its volume, temperature, and particle number.
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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.
Planck length
The Planck length is the fundamental unit of length in quantum gravity, representing the scale at which classical concepts of space and time are expected to break down.
- 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: Planck–Einstein relation Target entity description: The Planck–Einstein relation is a fundamental quantum physics formula that links a photon's energy to its frequency, marking a key step in the development of quantum theory.
-
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.
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.
-
C.
Sackur–Tetrode equation
The Sackur–Tetrode equation is a fundamental formula in statistical mechanics that gives the absolute entropy of an ideal monatomic gas in terms of its volume, temperature, and particle number.
-
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.
Planck length
The Planck length is the fundamental unit of length in quantum gravity, representing the scale at which classical concepts of space and time are expected to break down.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
concept in quantum mechanics
ⓘ
equation in physics ⓘ physical law ⓘ |
| alternativeForm | E = hc/λ ⓘ |
| appliesTo |
electromagnetic radiation
ⓘ
photon ⓘ |
| category |
equations of quantum theory
ⓘ
fundamental relations in physics ⓘ |
| connects |
particle properties of light
ⓘ
wave properties of light ⓘ |
| dimensionOfEnergy | joule ⓘ |
| dimensionOfFrequency | hertz ⓘ |
| domain | microscopic scale ⓘ |
| field |
electromagnetism
ⓘ
optics ⓘ quantum mechanics ⓘ quantum physics ⓘ |
| hasFormula | E = hν ⓘ |
| historicalRole | key step in development of quantum theory ⓘ |
| implies |
higher frequency photons have higher energy
ⓘ
lower frequency photons have lower energy ⓘ photon energy is proportional to frequency ⓘ |
| introducedConcept | quantization of energy ⓘ |
| namedAfter |
Albert Einstein
ⓘ
Max Planck ⓘ |
| relatesQuantity |
electromagnetic radiation frequency
ⓘ
photon energy ⓘ photon energy and wavelength via speed of light ⓘ |
| supportsTheory | photon theory of light ⓘ |
| symbolForEnergy | E ⓘ |
| symbolForFrequency | ν ⓘ |
| symbolForPlanckConstant | h ⓘ |
| underlies | energy-time aspects of wave–particle duality ⓘ |
| usedIn |
X-ray photon energy determination
ⓘ
atomic transition energy calculations ⓘ blackbody radiation analysis ⓘ gamma-ray photon energy determination ⓘ laser physics ⓘ photoelectric effect explanation ⓘ radio and microwave photon energy calculations ⓘ semiconductor physics ⓘ spectroscopy ⓘ |
| usesConstant |
Planck constant
ⓘ
speed of light in vacuum ⓘ |
| validFor |
monochromatic radiation
ⓘ
single photon ⓘ |
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: Planck–Einstein relation Description of subject: The Planck–Einstein relation is a fundamental quantum physics formula that links a photon's energy to its frequency, marking a key step in the development of quantum theory.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.