33#ifndef G4PhysicalConstants_hh
34#define G4PhysicalConstants_hh 1
38using CLHEP::alpha_rcl2;
42using CLHEP::Bohr_radius;
44using CLHEP::c_squared;
45using CLHEP::classic_electr_radius;
46using CLHEP::e_squared;
47using CLHEP::electron_charge;
48using CLHEP::electron_Compton_length;
49using CLHEP::electron_mass_c2;
50using CLHEP::elm_coupling;
52using CLHEP::fine_structure_const;
55using CLHEP::hbar_Planck;
57using CLHEP::hbarc_squared;
58using CLHEP::k_Boltzmann;
59using CLHEP::kGasThreshold;
61using CLHEP::neutron_mass_c2;
64using CLHEP::proton_mass_c2;
65using CLHEP::STP_Pressure;
66using CLHEP::STP_Temperature;
68using CLHEP::twopi_mc2_rcl2;
69using CLHEP::Bohr_magneton;
70using CLHEP::nuclear_magneton;
71using CLHEP::universe_mean_density;