# Energy
wavenumber_e = h * c * wavenumber  # ṽ (nu-tilde) as energy
kcalmol = 1e3 * calorie / mole
kjmol = 1e3 * joule / mole
K_e = kelvin * boltzmann_constant

# Temperature
au_temp = atomic_unit_of_temperature

# Pressure
au_p = E_h / bohr**3

# Time
au_t = atomic_unit_of_time
# wavenumber_t = 

# Potential
au_pot = E_h / e

# Force
au_f = atomic_unit_of_force
