GalacticUnit (Physical Constants Package Symbol)

GalacticUnit is the approximate distance of the Sun from the center of the Milky Way Galaxy.

HubbleConstant (Physical Constants Package Symbol)

HubbleConstant is a measure of the rate at which the expansion of the universe varies with distance.

IcePoint (Physical Constants Package Symbol)

IcePoint is the temperature at which a mixture of air-saturated pure water and pure ice may exist in equilibrium at a pressure of one standard atmosphere.

MuonGFactor (Physical Constants Package Symbol)

MuonGFactor is the muon g-factor.

NeutronMass (Physical Constants Package Symbol)

NeutronMass is the mass of a neutron.

SpeedOfSound (Physical Constants Package Symbol)

SpeedOfSound is the speed of sound at sea level in the standard atmosphere.

FineStructureConstant (Physical Constants Package Symbol)

FineStructureConstant is the fine structure constant, an atomic constant.

StefanConstant (Physical Constants Package Symbol)

StefanConstant is the Stefan\[Dash]Boltzmann constant, a universal constant of proportionality between the radiant emittance of a black body and the fourth power of the ...

BoltzmannConstant (Physical Constants Package Symbol)

BoltzmannConstant is the ratio of the universal gas constant (MolarGasConstant) to Avogadro's number (AvogadroConstant).

ClassicalElectronRadius (Physical Constants Package Symbol)

ClassicalElectronRadius is the classical electron radius, an atomic constant.