AvogadroConstant is the number of molecules in one mole or gram molecular weight of a substance.
AirWavelength[element] gives a list of {wavelength_v, wavelength_a} pairs, where wavelength_v is the wavelength in vacuum and wavelength_a is the wavelength in air, for the ...
LowerTermFineStructureEnergy[element] gives a list of {wavelength_v, energy} pairs, where wavelength_v is the wavelength in vacuum and energy is the energy of the ...
RelativeStrength[element] gives a list of {wavelength_v, strength} pairs, where wavelength_v is the wavelength in vacuum and strength is the relative strength of the ...
VacuumWavelength[element] gives a list of the wavelengths in vacuum of the resonance absorption lines produced by the specified element.VacuumWavelength[element, ionstage] ...
BoxFillingStyle is an option for BoxWhiskerPlot which specifies a color to be used in drawing the box.
BoxMedianStyle is an option for BoxWhiskerPlot which specifies additional styles to be applied specifically to the median lines in the plot.
LightYear is a unit of length.
FirstIntegral[u] represents a first integral associated with the variable u in the output of the function FirstIntegrals.