Aliases for physical constants, with support for prefixes
Contents: G_0, Ha, Hg, M_e, N_A, Phi_0, R, R_K, R_inf, Ry, T_H, Z_0, a_0, alpha, c, c_1, c_2, c_3_f, c_3_lambda, e, epsilon_0, g_0, h, k_A, k_Aprime, k_B, k_C, k_F, k_J, kappa, l_n, lambda_e, m_e, mu_0, mu_B, r_e, sigma, t_H, t_n