| // 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_UNIVERSAL_CONSTANTS_HPP |
| #define BOOST_UNITS_CODATA_UNIVERSAL_CONSTANTS_HPP |
| |
| #include <boost/units/static_constant.hpp> |
| |
| #include <boost/units/systems/detail/constants.hpp> |
| #include <boost/units/systems/si/capacitance.hpp> |
| #include <boost/units/systems/si/current.hpp> |
| #include <boost/units/systems/si/energy.hpp> |
| #include <boost/units/systems/si/force.hpp> |
| #include <boost/units/systems/si/length.hpp> |
| #include <boost/units/systems/si/mass.hpp> |
| #include <boost/units/systems/si/resistance.hpp> |
| #include <boost/units/systems/si/temperature.hpp> |
| #include <boost/units/systems/si/time.hpp> |
| #include <boost/units/systems/si/velocity.hpp> |
| #include <boost/units/systems/si/volume.hpp> |
| #include <boost/units/systems/si/codata/typedefs.hpp> |
| |
| /// \file |
| /// CODATA recommended values of fundamental universal constants |
| /// using CODATA 2006 values as of 2007/03/30 |
| |
| namespace boost { |
| |
| namespace units { |
| |
| namespace si { |
| |
| namespace constants { |
| |
| namespace codata { |
| |
| /// CODATA recommended values of the fundamental physical constants: NIST SP 961 |
| |
| // UNIVERSAL |
| /// speed of light |
| BOOST_UNITS_PHYSICAL_CONSTANT(c,quantity<velocity>,299792458.0*meters/second,0.0*meters/second); |
| /// magnetic constant (exactly 4 pi x 10^(-7) - error is due to finite precision of pi) |
| BOOST_UNITS_PHYSICAL_CONSTANT(mu_0,quantity<force_over_current_squared>,12.56637061435917295385057353311801153679e-7*newtons/ampere/ampere,0.0*newtons/ampere/ampere); |
| /// electric constant |
| BOOST_UNITS_PHYSICAL_CONSTANT(epsilon_0,quantity<capacitance_over_length>,8.854187817620389850536563031710750260608e-12*farad/meter,0.0*farad/meter); |
| /// characteristic impedance of vacuum |
| BOOST_UNITS_PHYSICAL_CONSTANT(Z_0,quantity<resistance>,376.7303134617706554681984004203193082686*ohm,0.0*ohm); |
| /// Newtonian constant of gravitation |
| BOOST_UNITS_PHYSICAL_CONSTANT(G,quantity<volume_over_mass_time_squared>,6.67428e-11*cubic_meters/kilogram/second/second,6.7e-15*cubic_meters/kilogram/second/second); |
| /// Planck constant |
| BOOST_UNITS_PHYSICAL_CONSTANT(h,quantity<energy_time>,6.62606896e-34*joule*seconds,3.3e-41*joule*seconds); |
| /// Dirac constant |
| BOOST_UNITS_PHYSICAL_CONSTANT(hbar,quantity<energy_time>,1.054571628e-34*joule*seconds,5.3e-42*joule*seconds); |
| /// Planck mass |
| BOOST_UNITS_PHYSICAL_CONSTANT(m_P,quantity<mass>,2.17644e-8*kilograms,1.1e-12*kilograms); |
| /// Planck temperature |
| BOOST_UNITS_PHYSICAL_CONSTANT(T_P,quantity<temperature>,1.416785e32*kelvin,7.1e27*kelvin); |
| /// Planck length |
| BOOST_UNITS_PHYSICAL_CONSTANT(l_P,quantity<length>,1.616252e-35*meters,8.1e-40*meters); |
| /// Planck time |
| BOOST_UNITS_PHYSICAL_CONSTANT(t_P,quantity<time>,5.39124e-44*seconds,2.7e-48*seconds); |
| |
| } // namespace codata |
| |
| } // namespace constants |
| |
| } // namespace si |
| |
| } // namespace units |
| |
| } // namespace boost |
| |
| #endif // BOOST_UNITS_CODATA_UNIVERSAL_CONSTANTS_HPP |