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Header <boost/units/systems/si/codata/physico-chemical_constants.hpp>

CODATA recommended values of fundamental physico-chemical constants CODATA 2006 values as of 2007/03/30

namespace boost {
  namespace units {
    namespace si {
      namespace constants {
        namespace codata {

          // Avogadro constant. 
           BOOST_UNITS_PHYSICAL_CONSTANT(N_A, quantity< inverse_amount >, 
                                         6.02214179e23/ mole, 3.0e16/ mole);

          // atomic mass constant 
           BOOST_UNITS_PHYSICAL_CONSTANT(m_u, quantity< mass >, 
                                         1.660538782e-27 * kilograms, 
                                         8.3e-35 * kilograms);

          // Faraday constant. 
           BOOST_UNITS_PHYSICAL_CONSTANT(F, 
                                         quantity< electric_charge_over_amount >, 
                                         96485.3399 *coulombs/ mole, 
                                         2.4e-3 *coulombs/ mole);

          // molar gas constant 
           BOOST_UNITS_PHYSICAL_CONSTANT(R, 
                                         quantity< energy_over_temperature_amount >, 
                                         8.314472 *joules/kelvin/ mole, 
                                         1.5e-5 *joules/kelvin/ mole);

          // Boltzmann constant. 
           BOOST_UNITS_PHYSICAL_CONSTANT(k_B, 
                                         quantity< energy_over_temperature >, 
                                         1.3806504e-23 *joules/ kelvin, 
                                         2.4e-29 *joules/ kelvin);

          // Stefan-Boltzmann constant. 
           BOOST_UNITS_PHYSICAL_CONSTANT(sigma_SB, 
                                         quantity< power_over_area_temperature_4 >, 
                                         5.670400e-8 *watts/square_meter/pow< 4 >, 
                                         4.0e-13 *watts/square_meter/pow< 4 >);

          // first radiation constant 
           BOOST_UNITS_PHYSICAL_CONSTANT(c_1, quantity< power_area >, 
                                         3.74177118e-16 *watt * square_meters, 
                                         1.9e-23 *watt * square_meters);

          // first radiation constant for spectral radiance 
           BOOST_UNITS_PHYSICAL_CONSTANT(c_1L, 
                                         quantity< power_area_over_solid_angle >, 
                                         1.191042759e-16 *watt *square_meters/ steradian, 
                                         5.9e-24 *watt *square_meters/ steradian);

          // second radiation constant 
           BOOST_UNITS_PHYSICAL_CONSTANT(c_2, quantity< length_temperature >, 
                                         1.4387752e-2 *meter * kelvin, 
                                         2.5e-8 *meter * kelvin);

          // Wien displacement law constant : lambda_max T. 
           BOOST_UNITS_PHYSICAL_CONSTANT(b, quantity< length_temperature >, 
                                         2.8977685e-3 *meter * kelvin, 
                                         5.1e-9 *meter * kelvin);

          // Wien displacement law constant : nu_max/T. 
           BOOST_UNITS_PHYSICAL_CONSTANT(b_prime, 
                                         quantity< frequency_over_temperature >, 
                                         5.878933e10 *hertz/ kelvin, 
                                         1.0e15 *hertz/ kelvin);
        }
      }
    }
  }
}

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