
# Constants
rydberg_constant = 1.0973731568160e7 * m^-1 = R_∞ = R_inf # pint > 0.9
fine_structure_constant = (2 * h * R_inf / (m_e * c)) ** 0.5 = α = alpha # pint > 0.9

# Wavenumber
reciprocal_centimeter = 1 / cm = cm_1 = kayser = wavenumber # pint > 0.9 AND custom definition of wavenumber

# Energy
rydberg = h * c * R_inf = Ry # pint > 0.9
wavenumber_e = h * c * wavenumber  # custom definition, ṽ (nu-tilde) as energy
kcalmol = 1e3 * calorie / mole # custom definition
kjmol = 1e3 * joule / mole # custom definition
K_e = kelvin * boltzmann_constant # custom definition

# Length
bohr = hbar / (alpha * m_e * c) = a_0 = a0 = bohr_radius = atomic_unit_of_length = a_u_length # pint > 0.9

# Temperature
atomic_unit_of_temperature = E_h / k = a_u_temp = au_temp # pint 0.9 AND custom definition of au_temp

# Pressure
au_p = E_h / bohr**3 # custom definition

# Time
atomic_unit_of_time = hbar / E_h = a_u_time = au_t # pint > 0.9 AND custom definition of au_t
# wavenumber_t = 

# Potential
au_pot = E_h / e # custom definition

# Force
atomic_unit_of_force = E_h / a_0 = a_u_force = au_f # pint > 0.9 AND custom definition of au_f
