AgeOfUniverse (Physical Constants Package Symbol)

AgeOfUniverse is the age of the universe, a physical constant.

BohrRadius (Physical Constants Package Symbol)

BohrRadius is the Bohr radius, an atomic constant.

CosmicBackgroundTemperature (Physical Constants Package Symbol)

CosmicBackgroundTemperature is the temperature of the cosmic background radiation.

EarthRadius (Physical Constants Package Symbol)

EarthRadius is the radius of Earth, a physical constant.

ElectronCharge (Physical Constants Package Symbol)

ElectronCharge is the elementary charge on the electron, an electromagnetic constant.

ElectronGFactor (Physical Constants Package Symbol)

ElectronGFactor is the electron g-factor.

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.

MagneticFluxQuantum (Physical Constants Package Symbol)

MagneticFluxQuantum is magnetic flux quantum, an electromagnetic constant.