123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081 |
- // 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/quantity.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
|