EarthMass (Physical Constants Package Symbol)

EarthMass is the mass of Earth, a physical constant.

EarthRadius (Physical Constants Package Symbol)

EarthRadius is the radius of Earth, a physical constant.

ElectronGFactor (Physical Constants Package Symbol)

ElectronGFactor is the electron g-factor.

FineStructureConstant (Physical Constants Package Symbol)

FineStructureConstant is the fine structure constant, an atomic constant.

HubbleConstant (Physical Constants Package Symbol)

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

MolarGasConstant (Physical Constants Package Symbol)

MolarGasConstant is a physico-chemical constant.

MuonGFactor (Physical Constants Package Symbol)

MuonGFactor is the muon g-factor.

MuonMass (Physical Constants Package Symbol)

MuonMass is the mass of a muon.

NeutronMass (Physical Constants Package Symbol)

NeutronMass is the mass of a neutron.

PlanckConstantReduced (Physical Constants Package Symbol)

PlanckConstantReduced is a universal constant, equal to PlanckConstant/(2 Pi).