Physical constants (i.e. dimensioned values). More...

#include <QC.h>

Static Public Attributes
static Quantum< Double >	c
	vel of light
static Quantum< Double >	G
	Gravitational constant.
static Quantum< Double >	h
	Planck.
static Quantum< Double >	HI
	HI line.
static Quantum< Double >	R
	Gas constant.
static Quantum< Double >	NA
	Avogadro.
static Quantum< Double >	e
	electron charge
static Quantum< Double >	mp
	proton mass
static Quantum< Double >	mp_me
	mp/me
static Quantum< Double >	mu0
	permeability vacuum
static Quantum< Double >	epsilon0
	permittivity vacuum
static Quantum< Double >	k
	Boltzmann.
static Quantum< Double >	F
	Faraday.
static Quantum< Double >	me
	mass electron
static Quantum< Double >	re
	radius electron
static Quantum< Double >	a0
	Bohr's radius.
static Quantum< Double >	R0
	Solar radius.
static Quantum< Double >	k2
	IAU Gaussian grav.
Static Private Member Functions
static void	init ()
	This function is used, in conjunction with the QC_init class to force construction of statics (see ARM 3.4).
Friends
class	QC_init

Detailed Description

Physical constants (i.e. dimensioned values).

Intended use:

Public interface

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25
Test programs:: tQuantum

Prerequisite

Quantum

Etymology

A QC is based on the Quantum and C (constants) class

Synopsis

QC:name will produce a Quantity (Quantum<Double>) value consisting of a value and a unit. See the Quantum class for possibilities of manipulating quanta. tQuantum will give a list of the currently available constants

Example

To obtain the velocity of light in pc/a, use:

    #include <casa/Quanta.h>
    Double vel_pcpy = (C::c).convert("pc/a").getValue();

The following constants are defined as public data members of class QC.

Caution: The following public data member documentation is currently extracted by hand, and thus could be out of date if this documentation was not updated when the class was modified;

       // vel of light
       static Quantum<Double> c;
   
       // Gravitational constant
       static Quantum<Double> G;
   
       // Planck
       static Quantum<Double> h;
   
       // HI line
       static Quantum<Double> HI;
   
       // Gas constant
       static Quantum<Double> R;
   
       // Avogadro
       static Quantum<Double> NA;
   
       // electron charge
       static Quantum<Double> e;
   
       // proton mass
       static Quantum<Double> mp;
   
       // mp/me
       static Quantum<Double> mp_me;
   
       // permeability vacuum
       static Quantum<Double> mu0;
   
       // permittivity vacuum
       static Quantum<Double> epsilon0;
   
       // Boltzmann
       static Quantum<Double> k;
   
       // Faraday
       static Quantum<Double> F;
   
       // mass electron
       static Quantum<Double> me;
   
       // radius electron
       static Quantum<Double> re;
   
       // Bohr's radius
       static Quantum<Double> a0;
   
       // Solar radius
       static Quantum<Double> R0;
   
       // IAU Gaussian grav. const **2
       static Quantum<Double> k2;