ceph/src/boost/boost/units/systems/si/codata/electromagnetic_constants.hpp

   1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
   2 // unit/quantity manipulation and conversion
   3 //
   4 // Copyright (C) 2003-2008 Matthias Christian Schabel
   5 // Copyright (C) 2008 Steven Watanabe
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See
   8 // accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
  12 #define BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP
  13
  14 ///
  15 /// \file
  16 /// \brief CODATA recommended values of fundamental electromagnetic constants.
  17 /// \details CODATA recommended values of the fundamental physical constants: NIST SP 961
  18 ///   CODATA 2006 values as of 2007/03/30
  19 ///
  20
  21 #include <boost/units/quantity.hpp>
  22 #include <boost/units/static_constant.hpp>
  23
  24 #include <boost/units/systems/detail/constants.hpp>
  25 #include <boost/units/systems/si/conductance.hpp>
  26 #include <boost/units/systems/si/current.hpp>
  27 #include <boost/units/systems/si/electric_charge.hpp>
  28 #include <boost/units/systems/si/electric_potential.hpp>
  29 #include <boost/units/systems/si/energy.hpp>
  30 #include <boost/units/systems/si/frequency.hpp>
  31 #include <boost/units/systems/si/magnetic_flux.hpp>
  32 #include <boost/units/systems/si/magnetic_flux_density.hpp>
  33 #include <boost/units/systems/si/resistance.hpp>
  34
  35 #include <boost/units/systems/si/codata/typedefs.hpp>
  36
  37 namespace boost {
  38
  39 namespace units {
  40
  41 namespace si {
  42
  43 namespace constants {
  44
  45 namespace codata {
  46
  47 // ELECTROMAGNETIC
  48 /// elementary charge
  49 BOOST_UNITS_PHYSICAL_CONSTANT(e,quantity<electric_charge>,1.602176487e-19*coulombs,4.0e-27*coulombs);
  50 /// elementary charge to Planck constant ratio
  51 BOOST_UNITS_PHYSICAL_CONSTANT(e_over_h,quantity<current_over_energy>,2.417989454e14*amperes/joule,6.0e6*amperes/joule);
  52 /// magnetic flux quantum
  53 BOOST_UNITS_PHYSICAL_CONSTANT(Phi_0,quantity<magnetic_flux>,2.067833667e-15*webers,5.2e-23*webers);
  54 /// conductance quantum
  55 BOOST_UNITS_PHYSICAL_CONSTANT(G_0,quantity<conductance>,7.7480917004e-5*siemens,5.3e-14*siemens);
  56 /// Josephson constant
  57 BOOST_UNITS_PHYSICAL_CONSTANT(K_J,quantity<frequency_over_electric_potential>,483597.891e9*hertz/volt,1.2e7*hertz/volt);
  58 /// von Klitzing constant
  59 BOOST_UNITS_PHYSICAL_CONSTANT(R_K,quantity<resistance>,25812.807557*ohms,1.77e-5*ohms);
  60 /// Bohr magneton
  61 BOOST_UNITS_PHYSICAL_CONSTANT(mu_B,quantity<energy_over_magnetic_flux_density>,927.400915e-26*joules/tesla,2.3e-31*joules/tesla);
  62 /// nuclear magneton
  63 BOOST_UNITS_PHYSICAL_CONSTANT(mu_N,quantity<energy_over_magnetic_flux_density>,5.05078324e-27*joules/tesla,1.3e-34*joules/tesla);
  64
  65 } // namespace codata
  66
  67 } // namespace constants
  68
  69 } // namespace si
  70
  71 } // namespace units
  72
  73 } // namespace boost
  74
  75 #endif // BOOST_UNITS_CODATA_ELECTROMAGNETIC_CONSTANTS_HPP