ButcherWidth (Numerical Differential Equation Analysis Package Symbol)

ButcherWidth[tree] gives the width of tree.

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.

ClassicalElectronRadius (Physical Constants Package Symbol)

ClassicalElectronRadius is the classical electron radius, an atomic constant.

CosmicBackgroundTemperature (Physical Constants Package Symbol)

CosmicBackgroundTemperature is the temperature of the cosmic background radiation.

DeuteronMagneticMoment (Physical Constants Package Symbol)

DeuteronMagneticMoment is the deuteron magnetic moment.

DeuteronMass (Physical Constants Package Symbol)

DeuteronMass is the mass of a deuteron.

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.

ElectronCharge (Physical Constants Package Symbol)

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