Newtonian gravitational constant G

E4996

fundamental constant gravitational constant physical constant

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.

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All labels observed (5)

Label	Occurrences
Newtonian gravitational constant	6
Newtonian gravitational constant G canonical	2
Newtonian constant of gravitation	1
gravitational constant G	1
universal gravitational constant	1

Statements (48)

Predicate	Object
instanceOf	fundamental constant ⓘ gravitational constant ⓘ physical constant ⓘ
alsoKnownAs	Newtonian gravitational constant G ⓘ surface form: Newtonian constant of gravitation Newtonian gravitational constant G ⓘ surface form: universal gravitational constant
appearsIn	Poisson equation for Newtonian gravity ⓘ
appearsInEquation	Einstein field equations ⓘ surface form: Einstein field equations (via κ = 8πG/c^4) F = G m1 m2 / r^2 ⓘ g = G M / r^2 ⓘ ∇^2Φ = 4πGρ ⓘ
appearsInLaw	law of universal gravitation ⓘ surface form: Newton's law of universal gravitation
appearsInTheory	law of universal gravitation ⓘ surface form: Newtonian gravity classical mechanics ⓘ theory of relativity ⓘ surface form: general relativity
CODATA2022StandardUncertainty	0.00015×10^-11 m^3 kg^-1 s^-2 ⓘ
CODATA2022Value	6.67430×10^-11 m^3 kg^-1 s^-2 ⓘ
dependsOn	none of the properties of specific materials ⓘ
dimension	L^3 M^-1 T^-2 ⓘ
fieldOfUse	astrophysics ⓘ cosmology ⓘ geophysics ⓘ metrology ⓘ
governs	gravitational attraction between macroscopic bodies ⓘ gravitational attraction between point masses ⓘ strength of gravitational potential Φ ⓘ
hasMeasurementDifficulty	one of the least precisely known fundamental constants ⓘ
hasSign	positive ⓘ
historicalExperiment	Henry Cavendish ⓘ surface form: Cavendish experiment
historicallyMeasuredBy	Henry Cavendish ⓘ
independentOf	choice of units for mass, length, and time (up to conversion factors) ⓘ
isMeasuredBy	Cavendish-type torsion balance experiments ⓘ atom interferometry experiments ⓘ pendulum experiments ⓘ
isPositive	true ⓘ
isUniversal	true ⓘ
quantityType	coupling constant ⓘ
relatedToConstant	Planck constant ⓘ surface form: Planck constant h speed of light c ⓘ
relativeStandardUncertainty	2.2×10^-5 ⓘ
role	quantifies strength of gravitational interaction ⓘ
SIUnit	m^3 kg^-1 s^-2 ⓘ
symbol	G ⓘ
usedFor	calculating orbital dynamics ⓘ determining planetary masses ⓘ modeling gravitational fields of celestial bodies ⓘ
usedToDefine	Planck length ⓘ Planck mass ⓘ Planck time ⓘ