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// vi: set ts=2:
//
// $Id: pyConstant.h,v 1.12 2005/12/23 17:01:57 amoll Exp $
//
#ifndef BALL_PYTHON_PYCONSTANT_H
#define BALL_PYTHON_PYCONSTANT_H
#ifndef BALL_COMMON_GLOBAL_H
# include <BALL/COMMON/global.h>
#endif
namespace BALL
{
/** Python constants namespace wrapper.
This class is a wrapper for the constants namespace.
\ingroup PythonExtensions
*/
class Constant
{
public:
// PI
static double PI;
/// Euler's number - base of the natural logarithm
static double E;
/** Internal theshold for equality comparisons.
Default value is 1e-6.
*/
static double EPSILON;
/** Elementary charge.
In units of C (\f$1.60217738 \cdot 10^{-19} C\f$).
*/
static double ELEMENTARY_CHARGE; // C
/// Elementary charge (alias)
static double e0;
/** Electron mass.
In units of kg (\f$9.1093897 \cdot 10^{-31}\f$ kg).
*/
static double ELECTRON_MASS ; // kg
/** Proton mass.
In units of kg (\f$1.6726230 \cdot 10^{-27}\f$ kg).
*/
static double PROTON_MASS ; // kg
/** Neutron mass.
In units of kg (\f$1.6749286 \cdot 10^{-27}\f$ kg).
*/
static double NEUTRON_MASS ; // kg
/** Avogadro constant.
In units of \f$mol^{-1}\f$ (\f$6.0221367 \cdot 10^{23} mol^{-1}\f$).
*/
static double AVOGADRO;
/** Avogadro constant (alias)
*/
static double NA;
/** Avogadro constant (alias)
*/
static double MOL;
/** Boltzmann constant.
In units of J/K (\f$1.380657 \cdot 10^{-23}\f$ J/K).
*/
static double BOLTZMANN;
/** Boltzmann constant (alias)
*/
static double k;
/** Planck constant.
In units of Js (\f$6.6260754 \cdot 10^{-34}\f$ Js).
*/
static double PLANCK;
/** Planck constant (alias)
*/
static double h;
/** Gas constant (= NA * k)
*/
static double GAS_CONSTANT;
/** Gas constant (alias)
*/
static double R;
/** Faraday constant (= NA * e0)
*/
static double FARADAY;
/** Faraday constant (alias)
*/
static double F;
/** Bohr radius.
In units m (\f$5.29177249 \cdot 10^{-11}\f$ m).
*/
static double BOHR_RADIUS;
/** Bohr radius (alias)
*/
static double a0;
// the following values from:
// P.W.Atkins: Physical Chemistry, 5th ed., Oxford University Press, 1995
/** Vacuum permittivity.
In units of $C^2J^{-1}m^{-1}$ ($8.85419 \cdot 10^{-12} C^2J^{-1}m^{-1}$).
*/
static double VACUUM_PERMITTIVITY;
/** Vacuum permeability.
In units of \f$Js^2C^{-2}m^{-1}\f$ (\f$4\pi \cdot 10^{-7} Js^2C^{-2}m^{-1}\f$).
*/
static double VACUUM_PERMEABILITY;
/** Speed of light.
In units of m/s (\f$2.99792458 \cdot 10^8 ms^{-1}\f$).
*/
static double SPEED_OF_LIGHT;
/** Speed of Light (alias)
*/
static double c;
/** Gravitational constant.
In units of \f$Nm^2kg^{-2}\f$ (\f$6.67259 \cdot 10^{-11} Nm^2kg^{-2}\f$).
*/
static double GRAVITATIONAL_CONSTANT;
/** Fine structure constant.
Without unit (\f$7.29735 \cdot 10^{-3}\f$).
*/
static double FINE_STRUCTURE_CONSTANT;
/** Degree per rad.
57.2957795130823209
*/
static double DEG_PER_RAD;
/** Rad per degree.
0.0174532925199432957
*/
static double RAD_PER_DEG;
/** mm per inch.
25.4
*/
static double MM_PER_INCH ;
/** m per foot.
3.048
*/
static double M_PER_FOOT ;
/** Joules per calorie.
4.184
*/
static double JOULE_PER_CAL;
/** Calories per Joule.
1/JOULE_PER_CAL
*/
static double CAL_PER_JOULE;
};
} // namespace BALL
#endif // BALL_PYTHON_PYCONSTANT_H
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