Units

Useful conversion to keep in mind:

$1~\mathrm{meV}=1.5193~\mathrm{ps}^{-1}$

Constants[edit]

$h\approx6.62607\times10^{-34}\mathrm{J s}$ $h\approx4.13567\mathrm{\,meV\, ps}$

The last expression, useful because it gets rid of the power of ten, comes from Mathematica's:

Convert[PlanckConstant, ElectronVolt*Second] 10^3*10^12 Reduced Planck constant: $\hbar\approx1.05457\times10^{-34}\mathrm{J s}$ $\hbar\approx0.658212\mathrm{\,meV\, ps}$