Planck energy
E176979
Planck energy is the fundamental energy scale in physics, derived from universal constants, at which quantum gravitational effects are expected to become significant.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Planck energy canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T1564821 — 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 energy Context triple: [Planck time, relatedTo, Planck energy]
-
A.
Planck temperature
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.
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B.
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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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.
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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E.
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.
- 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 energy Target entity description: Planck energy is the fundamental energy scale in physics, derived from universal constants, at which quantum gravitational effects are expected to become significant.
-
A.
Planck temperature
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.
-
B.
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.
-
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.
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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E.
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.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Planck unit
ⓘ
natural unit ⓘ physical constant ⓘ |
| approximateNumericalValue | 1.9561 × 10^9 J (CODATA 2018) ⓘ |
| associatedWithEnergyScale |
Planck scale physics
ⓘ
quantum gravity ⓘ |
| belongsToCategory |
fundamental physical constants
ⓘ
natural units of measurement ⓘ |
| comparedToLHC | about 10^15 times higher than LHC collision energies ⓘ |
| correspondsToMass | Planck mass via E = m c^2 ⓘ |
| definedBy | E_P = \sqrt{\hbar c^5 / G} ⓘ |
| dependsOnConstant |
Newtonian gravitational constant G
ⓘ
surface form:
Newtonian gravitational constant
reduced Planck constant ⓘ speed of light in vacuum ⓘ |
| dimensionSymbol | ML^2T^{-2} ⓘ |
| greaterThan | energies achievable in current particle accelerators ⓘ |
| hasApproximateValue | 1.9561 × 10^9 J ⓘ |
| hasApproximateValueInElectronvolts | 1.22 × 10^28 eV ⓘ |
| hasApproximateValueInGigaelectronvolts | 1.22 × 10^19 GeV ⓘ |
| hasDimension | energy ⓘ |
| hasOrderOfMagnitudeInElectronvolts | 10^28 eV ⓘ |
| hasOrderOfMagnitudeInJoules | 10^9 J ⓘ |
| hasSymbol | E_P ⓘ |
| introducedInContextOf |
Planck units
ⓘ
surface form:
Planck unit system
|
| log10ValueInJoules | about 9.29 ⓘ |
| measuredIn |
electronvolt
ⓘ
joule ⓘ |
| namedAfter | Max Planck ⓘ |
| partOfSystem | Planck units ⓘ |
| relatedTo |
Planck length
ⓘ
Planck mass ⓘ Planck momentum ⓘ Planck scale ⓘ Planck temperature ⓘ Planck time ⓘ |
| relevance |
sets natural upper scale for effective field theories of gravity
ⓘ
used to define dimensionless coupling strengths at Planck scale ⓘ |
| significance |
energy scale where quantum gravitational effects are expected to become strong
ⓘ
marks breakdown of classical general relativity ⓘ |
| usedIn |
cosmology
ⓘ
loop quantum gravity ⓘ quantum gravity models ⓘ string theory ⓘ theoretical high-energy physics ⓘ |
| usesSymbolForGravitationalConstant | G ⓘ |
| usesSymbolForReducedPlanckConstant | \hbar ⓘ |
| usesSymbolForSpeedOfLight | c ⓘ |
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 energy Description of subject: Planck energy is the fundamental energy scale in physics, derived from universal constants, at which quantum gravitational effects are expected to become significant.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.