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- // Boost.Units - A C++ library for zero-overhead dimensional analysis and
- // unit/quantity manipulation and conversion
- //
- // Copyright (C) 2003-2008 Matthias Christian Schabel
- // Copyright (C) 2008 Steven Watanabe
- //
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- #ifndef BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
- #define BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
- ///
- /// \file
- /// \brief CODATA recommended values of fundamental electromagnetic constants.
- /// \details CODATA recommended values of the fundamental physical constants: NIST SP 961
- /// CODATA 2006 values as of 2007/03/30
- ///
- #include <boost/units/quantity.hpp>
- #include <boost/units/static_constant.hpp>
- #include <boost/units/systems/detail/constants.hpp>
- #include <boost/units/systems/si/conductance.hpp>
- #include <boost/units/systems/si/current.hpp>
- #include <boost/units/systems/si/electric_charge.hpp>
- #include <boost/units/systems/si/electric_potential.hpp>
- #include <boost/units/systems/si/energy.hpp>
- #include <boost/units/systems/si/frequency.hpp>
- #include <boost/units/systems/si/magnetic_flux.hpp>
- #include <boost/units/systems/si/magnetic_flux_density.hpp>
- #include <boost/units/systems/si/resistance.hpp>
- #include <boost/units/systems/si/codata/typedefs.hpp>
- namespace boost {
- namespace units {
- namespace si {
-
- namespace constants {
- namespace codata {
- // ELECTROMAGNETIC
- /// elementary charge
- BOOST_UNITS_PHYSICAL_CONSTANT(e,quantity<electric_charge>,1.602176487e-19*coulombs,4.0e-27*coulombs);
- /// elementary charge to Planck constant ratio
- BOOST_UNITS_PHYSICAL_CONSTANT(e_over_h,quantity<current_over_energy>,2.417989454e14*amperes/joule,6.0e6*amperes/joule);
- /// magnetic flux quantum
- BOOST_UNITS_PHYSICAL_CONSTANT(Phi_0,quantity<magnetic_flux>,2.067833667e-15*webers,5.2e-23*webers);
- /// conductance quantum
- BOOST_UNITS_PHYSICAL_CONSTANT(G_0,quantity<conductance>,7.7480917004e-5*siemens,5.3e-14*siemens);
- /// Josephson constant
- BOOST_UNITS_PHYSICAL_CONSTANT(K_J,quantity<frequency_over_electric_potential>,483597.891e9*hertz/volt,1.2e7*hertz/volt);
- /// von Klitzing constant
- BOOST_UNITS_PHYSICAL_CONSTANT(R_K,quantity<resistance>,25812.807557*ohms,1.77e-5*ohms);
- /// Bohr magneton
- BOOST_UNITS_PHYSICAL_CONSTANT(mu_B,quantity<energy_over_magnetic_flux_density>,927.400915e-26*joules/tesla,2.3e-31*joules/tesla);
- /// nuclear magneton
- BOOST_UNITS_PHYSICAL_CONSTANT(mu_N,quantity<energy_over_magnetic_flux_density>,5.05078324e-27*joules/tesla,1.3e-34*joules/tesla);
- } // namespace codata
- } // namespace constants
- } // namespace si
- } // namespace units
- } // namespace boost
- #endif // BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
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