Physical Constants

SpeQ has the following groups of built-in physical constants.
The physical constants have a value and an SI-unit. For example if you enter Gravity, the result is 9.80665 m*s². You can remove the unit by using the function Convert.

The values for the constants are taken from the Wikipedia, the free online encyclopedia. See Physical constants on Wikipedia for more information.

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Universal

Name Symbol Value SI Unit
Atmatm101325Pa
DiracConstanth1.0545716818e-34Js
ElectricConstantε08.854187817e-12Fm-1
GravitationConstantG6.674210e-11m3kg-1s-2
Gravitygn9.80665ms-2
MagneticConstantμ01.2566370614e-6NA-2
PlanckConstanth6.626069311e-34Js
SpeedOfLightc299792458ms-1
VacuumImpedanceZ0376.730313461Ω
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Electromagnetic

Name Symbol Value SI Unit
BohrMagnetonμB927.40094980e-26JT-1
ConductanceQuantumG07.74809173326e-5S
Coulombκ8.987742438e9Nm2C-2
ElementaryChargee1.6021765314e-19C
JosephsonKJ483597.87941e9HzV-1
KlitzingRK25812.80744986Ω
MagneticFluxQuantumf02.0678337218e-15Wb
NuclearMagnetonμN5.0507834343e-27JT-1
ResistanceQuantumR012906.40372543Ω
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Atomic and Nuclear

Name Symbol Value SI Unit
AtomicMassmu1.6605387313e-27kg
BohrRadiusa00.529177210818e-10m
DeuteronMassmd3.3435830926e-27kg
ElectronMassme9.1093818872e-31kg
FermiCouplingGF1.166391e-5GeV-2
FineStructureα7.29735256824e-3-
HartreeEnergyEh4.3597441775e-18J
NeutronMassmn1.6749271613e-27kg
ProtonMassmp1.67264858600000e-27kg
QuantumOfCirculationh / (2me)3.63694755024e-4m2s-1
RydbergR10973731.56852573m-1
ThomsonCrossSection0.66524587313e-28m2
WeakMixingAngle0.2312015
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Physico-Chemical

Name Symbol Value SI Unit
AvogadroNA6.022141510e23mol-1
Boltzmannk1.380650524e-23JK-1
FaradayF96485.338383Cmol-1
FirstRadiationc13.7417713864e-16Wm2
GasConstantR8.31447215JK-1mol-1
Loschmidtn02.686777347e25m-3
MolarPlanckConstantNAh3.99031271627e-10Jsmol-1
MolarVolumeVm22.41399639e-3m3mol-1
SackurTetrode-1.164867744-
SecondRadiationc21.438775225e-2mK
SpectralRadiancec1L1.1910428220e-16Wm2sr-1
StefanBoltzmannσ5.67040040e-8Wm-2K-4
WienDisplacementb2.897768551e-3mK
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See Also

Constants, Math constants