CODATA recommended values of the fundamental physical constants

E31642

metrological reference recommended values of physical constants scientific standard

The CODATA recommended values of the fundamental physical constants are internationally standardized, periodically updated numerical values for key physical constants used to ensure consistency and precision in scientific and technological calculations.

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All labels observed (6)

Label	Occurrences
CODATA recommended values of the fundamental physical constants canonical	4
CODATA 2018	1
CODATA recommended values	1
CODATA recommended values of the fundamental physical constants: 2010	1
CODATA recommended values of the fundamental physical constants: 2014	1
CODATA recommended values of the fundamental physical constants: 2018	1

How this entity was disambiguated

This entity first appeared as the object of triple T244388 — 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: CODATA recommended values of the fundamental physical constants
Context triple: [Avogadro constant, isListedIn, CODATA recommended values of the fundamental physical constants]

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. Gauss’s constant
Gauss’s constant is a mathematical constant arising in number theory and complex analysis, particularly in connection with the lemniscate and elliptic functions.
C. Newtonian gravitational constant G
The Newtonian gravitational constant G is the fundamental physical constant that quantifies the strength of gravitational attraction between masses in classical and relativistic theories of gravity.
D. Gaussian law of error
The Gaussian law of error is a fundamental statistical principle stating that measurement errors tend to follow a normal (bell-shaped) distribution, forming the basis of much of probability theory and statistical inference.
E. International Atomic Time
International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
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: CODATA recommended values of the fundamental physical constants
Target entity description: The CODATA recommended values of the fundamental physical constants are internationally standardized, periodically updated numerical values for key physical constants used to ensure consistency and precision in scientific and technological calculations.

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. Gauss’s constant
Gauss’s constant is a mathematical constant arising in number theory and complex analysis, particularly in connection with the lemniscate and elliptic functions.
C. Newtonian gravitational constant G
The Newtonian gravitational constant G is the fundamental physical constant that quantifies the strength of gravitational attraction between masses in classical and relativistic theories of gravity.
D. Gaussian law of error
The Gaussian law of error is a fundamental statistical principle stating that measurement errors tend to follow a normal (bell-shaped) distribution, forming the basis of much of probability theory and statistical inference.
E. International Atomic Time
International Atomic Time is a high-precision time standard based on the combined output of atomic clocks worldwide, serving as the fundamental reference for modern civil and scientific timekeeping.
F. None of above. chosen

Statements (75)

Predicate	Object
instanceOf	metrological reference ⓘ recommended values of physical constants ⓘ scientific standard ⓘ
appliesTo	atomic constants ⓘ electromagnetic constants ⓘ fundamental physical constants ⓘ physico-chemical constants ⓘ quantum constants ⓘ thermodynamic constants ⓘ
hasProperty	expressed in SI units ⓘ internationally recognized ⓘ numerical values with uncertainties ⓘ periodically updated ⓘ
hasPurpose	to ensure consistency in scientific calculations ⓘ to ensure precision in scientific and technological calculations ⓘ to provide internationally standardized numerical values for fundamental physical constants ⓘ
includesConstant	Avogadro constant ⓘ Bohr magneton ⓘ Bohr radius ⓘ Boltzmann constant ⓘ Faraday constant ⓘ Josephson constant ⓘ Loschmidt constant ⓘ linked to: Avogadro constant Planck constant ⓘ Rydberg constant ⓘ Stefan–Boltzmann constant ⓘ Thomson cross section ⓘ atomic mass constant ⓘ classical electron radius ⓘ electric constant (prior to SI 2019 redefinition) ⓘ electron g-factor ⓘ electron mass ⓘ elementary charge ⓘ fine-structure constant ⓘ first radiation constant ⓘ gas constant ⓘ gravitational constant ⓘ magnetic constant (prior to SI 2019 redefinition) ⓘ molar Planck constant ⓘ molar gas constant ⓘ molar volume of ideal gas ⓘ nuclear magneton ⓘ proton g-factor ⓘ proton mass ⓘ second radiation constant ⓘ speed of light in vacuum ⓘ standard acceleration of gravity ⓘ standard atmosphere ⓘ von Klitzing constant ⓘ
isBasedOn	evaluation of experimental measurements ⓘ least-squares adjustment of experimental data ⓘ statistical analysis of uncertainties ⓘ theoretical calculations ⓘ
maintainedBy	CODATA ⓘ Committee on Data of the International Science Council ⓘ International Science Council ⓘ
publishedAs	CODATA recommended values of the fundamental physical constants: 2010 ⓘ linked to: CODATA recommended values of the fundamental physical constants CODATA recommended values of the fundamental physical constants: 2014 ⓘ linked to: CODATA recommended values of the fundamental physical constants CODATA recommended values of the fundamental physical constants: 2018 ⓘ linked to: CODATA recommended values of the fundamental physical constants
publishedBy	CODATA Task Group on Fundamental Constants ⓘ linked to: CODATA
publishedIn	Reviews of Modern Physics ⓘ
relatedTo	International System of Units ⓘ SI base units redefinition of 2019 ⓘ
usedBy	National Metrology Institutes ⓘ engineering community ⓘ scientific community ⓘ standards organizations ⓘ
usedIn	astronomy ⓘ chemistry ⓘ engineering ⓘ fundamental physics tests ⓘ materials science ⓘ metrology ⓘ physics ⓘ precision measurement ⓘ

How these facts were elicited