PlanckConstant (Physical Constants Package Symbol)

PlanckConstant is a universal constant of nature which relates the energy of a quantum of radiation to the frequency of the oscillator which emitted it.

ProtonComptonWavelength (Physical Constants Package Symbol)

ProtonComptonWavelength is the proton Compton wavelength.

ProtonMagneticMoment (Physical Constants Package Symbol)

ProtonMagneticMoment is the proton magnetic moment.

ProtonMass (Physical Constants Package Symbol)

ProtonMass is the mass of a proton.

RydbergConstant (Physical Constants Package Symbol)

RydbergConstant is an atomic constant appearing in the Rydberg formula expressing the wave-numbers of the lines in a spectral series.

SolarConstant (Physical Constants Package Symbol)

SolarConstant is the rate at which solar radiation is received outside Earth's atmosphere on a surface normal to the incident radiation and at Earth's mean distance from the ...

SpeedOfLight (Physical Constants Package Symbol)

SpeedOfLight is the speed of light in a vacuum, a universal 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 ...

ThomsonCrossSection (Physical Constants Package Symbol)

ThomsonCrossSection is the Thomson cross section, an atomic constant.

Area (Polytopes Package Symbol)

Area[polygon] gives the area of polygon polygon, when the edges of polygon have unit length.