Planck temperature
E158978
The Planck temperature is the theoretical maximum meaningful temperature in physics, above which current physical theories, including quantum mechanics and general relativity, are expected to break down.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Planck temperature canonical | 9 |
How this entity was disambiguated
This entity first appeared as the object of triple T1374669 — 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 temperature Context triple: [Max Planck, hasNamesake, Planck temperature]
-
A.
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.
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B.
Planck time
Planck time is the fundamental unit of time in the system of Planck units, representing the shortest meaningful interval of time according to current physical theories, where quantum effects of gravity become significant.
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C.
Planck units
Planck units are a system of natural units in physics where fundamental constants like the speed of light, gravitational constant, and Planck constant are normalized to 1, providing a scale-free framework for describing physical laws.
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D.
Gibbons–Hawking temperature
The Gibbons–Hawking temperature is the characteristic thermal radiation temperature associated with the cosmological horizon of de Sitter space, analogous to the Hawking temperature of black holes.
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E.
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.
- 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 temperature Target entity description: The Planck temperature is the theoretical maximum meaningful temperature in physics, above which current physical theories, including quantum mechanics and general relativity, are expected to break down.
-
A.
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.
-
B.
Planck time
Planck time is the fundamental unit of time in the system of Planck units, representing the shortest meaningful interval of time according to current physical theories, where quantum effects of gravity become significant.
-
C.
Planck units
Planck units are a system of natural units in physics where fundamental constants like the speed of light, gravitational constant, and Planck constant are normalized to 1, providing a scale-free framework for describing physical laws.
-
D.
Gibbons–Hawking temperature
The Gibbons–Hawking temperature is the characteristic thermal radiation temperature associated with the cosmological horizon of de Sitter space, analogous to the Hawking temperature of black holes.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
Planck unit
ⓘ
physical constant ⓘ thermodynamic temperature scale quantity ⓘ |
| appearsIn |
discussions of limits of physical theories
ⓘ
literature on Planck era of the universe ⓘ |
| associatedWith |
Planck energy
ⓘ
Planck length ⓘ Planck scale ⓘ Planck time ⓘ breakdown of general relativity ⓘ breakdown of quantum field theory ⓘ |
| conceptualRole |
scale where classical spacetime description fails
ⓘ
theoretical maximum temperature ⓘ |
| definedInTermsOf |
Boltzmann constant
ⓘ
Planck constant ⓘ gravitational constant ⓘ reduced Planck constant ⓘ speed of light in vacuum ⓘ |
| dependsOn | fundamental constants of nature ⓘ |
| dimension | temperature ⓘ |
| field |
cosmology
ⓘ
quantum gravity ⓘ theoretical physics ⓘ |
| greaterThan |
core temperature of stars
ⓘ
temperature of the early universe after inflation reheating (in most models) ⓘ temperatures achievable in current particle accelerators ⓘ |
| hasApproximateValue |
1.4 × 10^32 K
ⓘ
1.416808e32 kelvin ⓘ |
| hasFormula | T_P = (1/k_B)·sqrt(ħ c^5 / G) ⓘ |
| historicalContext | derived from Planck’s combination of fundamental constants ⓘ |
| implies |
need for a theory of quantum gravity
ⓘ
strong quantum fluctuations of spacetime ⓘ |
| introducedBy | Max Planck ⓘ |
| isUpperLimitFor | meaningful thermodynamic temperature in known physics ⓘ |
| measurability | not experimentally attainable with current technology ⓘ |
| namedAfter | Max Planck ⓘ |
| orderOfMagnitude | 10^32 kelvin ⓘ |
| partOf | natural units ⓘ |
| regime | quantum gravity regime ⓘ |
| relatedTo |
Planck mass
ⓘ
Planck units system ⓘ
linked to:
Planck units
|
| SIBaseUnit | kelvin ⓘ |
| status | theoretical ⓘ |
| symbol | T_P ⓘ |
| unit | kelvin ⓘ |
| usedIn |
Big Bang models
ⓘ
linked to:
FLRW cosmological models
early universe cosmology ⓘ high-energy physics limits ⓘ |
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 temperature Description of subject: The Planck temperature is the theoretical maximum meaningful temperature in physics, above which current physical theories, including quantum mechanics and general relativity, are expected to break down.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.