casacore::QC Class Reference

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 Quantum< Double >	qTurn
	quarter turn = 90 degrees = pi/2 radians
static Quantum< Double >	hTurn
	half turn = 180 degrees = pi radians
static Quantum< Double >	fTurn
	full turn = 360 degrees = 2pi radians
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 <casacore/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Caution: The following public data member documentation is currently extracted by hand, and thus could be out of date if this documentation was not updated when the class was modified;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;
 
 // quarter turn = 90 degrees = pi/2 radians
 static Quantum<Double> qTurn;
 
 // half turn = 180 degrees = pi radians
 static Quantum<Double> hTurn;
 
 // full turn = 360 degrees = 2pi radians
 static Quantum<Double> fTurn;