from scipy.constants import c, N_A, k, e, m_e, epsilon_0

constants = {
    'c': c,
    'Avogadro': N_A,
    'q': e,
    'm_e': m_e,
    'A_R': 1.20173e6,  # A*m-2*K-2
    'k': k,
    'epsilon_0': epsilon_0,
}
