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.

Observed surface forms (3)

Surface form	As subject	As object
CODATA recommended values of the fundamental physical constants: 2010	0	1
CODATA recommended values of the fundamental physical constants: 2014	0	1
CODATA recommended values of the fundamental physical constants: 2018	0	1

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 → Avogadro constant → surface form: Loschmidt 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 self-linksurface differs → surface form: CODATA recommended values of the fundamental physical constants: 2010 CODATA recommended values of the fundamental physical constants self-linksurface differs → surface form: CODATA recommended values of the fundamental physical constants: 2014 CODATA recommended values of the fundamental physical constants self-linksurface differs → surface form: CODATA recommended values of the fundamental physical constants: 2018
publishedBy	CODATA → surface form: CODATA Task Group on Fundamental Constants
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 →

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

Avogadro constant → isListedIn → CODATA recommended values of the fundamental physical constants →

CODATA recommended values of the fundamental physical constants → publishedAs → CODATA recommended values of the fundamental physical constants self-linksurface differs →

this entity surface form: CODATA recommended values of the fundamental physical constants: 2018

CODATA recommended values of the fundamental physical constants → publishedAs → CODATA recommended values of the fundamental physical constants self-linksurface differs →

this entity surface form: CODATA recommended values of the fundamental physical constants: 2014

CODATA recommended values of the fundamental physical constants → publishedAs → CODATA recommended values of the fundamental physical constants self-linksurface differs →

this entity surface form: CODATA recommended values of the fundamental physical constants: 2010