use physics::constants

@name("Hartree")
@url("https://en.wikipedia.org/wiki/Hartree")
@aliases(hartrees)
unit hartree: Energy = ℏ^2 / (electron_mass a0^2)

@name("Bohr")
@url("https://en.wikipedia.org/wiki/Hartree_atomic_units")
unit bohr: Length = a0