// 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 |