PlanckConstantReduced is a universal constant, equal to PlanckConstant/(2 Pi).
PlanckMass is a universal constant.
QuantizedHallConductance is the quantized Hall conductance, an electromagnetic constant.
SackurTetrodeConstant is the absolute entropy constant, a physico-chemical constant.
SolarLuminosity is a physical constant.
SolarRadius is a physical constant.
SolarSchwarzschildRadius is a physical constant.
SpeedOfSound is the speed of sound at sea level in the standard atmosphere.
VacuumPermeability is the permeability of vacuum, a universal constant.
VacuumPermittivity is the permittivity of vacuum, a universal constant.