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Namespace Prefixes

Prefix	IRI
n6	http://qudt.org/vocab/quantitykind/
dcterms	http://purl.org/dc/terms/
n7	http://qudt.org/vocab/sou/
n3	http://qudt.org/schema/qudt/
n2	http://qudt.org/vocab/unit/
rdfs	http://www.w3.org/2000/01/rdf-schema#
n4	http://qudt.org/vocab/dimensionvector/
n8	http://qudt.org/2.1/vocab/
rdf	http://www.w3.org/1999/02/22-rdf-syntax-ns#
xsdh	http://www.w3.org/2001/XMLSchema#

Statements

Subject Item

n2:PlanckMass

rdf:type

n3:Unit

rdfs:label

Planck Mass

rdfs:isDefinedBy

n8:unit

dcterms:description

In physics, the Planck mass, denoted by \(m_P\), is the unit of mass in the system of natural units known as Planck units. It is defined so that \(\approx 1.2209 \times 10 GeV/c_0 = 2.17651(13) \times 10 kg\), (or \(21.7651 \mu g\)), where \(c_0\) is the speed of light in a vacuum, \(G\) is the gravitational constant, and \(\hbar\) is the reduced Planck constant. Particle physicists and cosmologists often use the reduced Planck mass, which is \(\approx 4.341 \times 10 kg = 2.435 \times 10 GeV/c\). The added factor of \(1/{\sqrt{8\pi}}\) simplifies a number of equations in general relativity. Quantum effects are typified by the magnitude of Planck's constant.

n3:dbpediaMatch

http://dbpedia.org/resource/Planck_mass

n3:hasDimensionVector

n4:A0E0L0I0M1H0T0D0

n3:informativeReference

https://en.wikipedia.org/wiki/Planck_units http://en.wikipedia.org/wiki/Planck_mass?oldid=493648632

n3:latexDefinition

\(m_P = \sqrt{\frac{ \hbar c^3}{G}} \approx 1.2209 \times 10^{19} GeV/c^2 = 2.17651(13) \times 10^{-8}\), where \(c\) is the speed of light in a vacuum, \(\hbar\) is the reduced Planck's constant, and \(G\) is the gravitational constant. The two digits enclosed by parentheses are the estimated standard error associated with the reported numerical value.

n3:latexSymbol

\(m_P\)

n3:symbol

planckmass

n3:hasQuantityKind

n6:Mass

n3:applicableSystem

n7:PLANCK

n3:conversionMultiplier

2.17644e-08