casacore::QC Class Reference

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

#include <QC.h>

Static Public Member Functions
static const Quantum< Double > &	c ()
	vel of light More...
static const Quantum< Double > &	G ()
	Gravitational constant. More...
static const Quantum< Double > &	h ()
	Planck. More...
static const Quantum< Double > &	HI ()
	HI line. More...
static Quantum< Double > &	R ()
	Gas constant. More...
static const Quantum< Double > &	NA ()
	Avogadro. More...
static const Quantum< Double > &	e ()
	electron charge More...
static const Quantum< Double > &	mp ()
	proton mass More...
static const Quantum< Double > &	mp_me ()
	mp/me More...
static const Quantum< Double > &	mu0 ()
	permeability vacuum More...
static const Quantum< Double > &	epsilon0 ()
	permittivity vacuum More...
static const Quantum< Double > &	k ()
	Boltzmann. More...
static const Quantum< Double > &	F ()
	Faraday. More...
static const Quantum< Double > &	me ()
	mass electron More...
static const Quantum< Double > &	re ()
	radius electron More...
static const Quantum< Double > &	a0 ()
	Bohr's radius. More...
static const Quantum< Double > &	R0 ()
	Solar radius. More...
static const Quantum< Double > &	k2 ()
	IAU Gaussian grav. More...
static const Quantum< Double > &	qTurn ()
	quarter turn = 90 degrees = pi/2 radians More...
static const Quantum< Double > &	hTurn ()
	half turn = 180 degrees = pi radians More...
static const Quantum< Double > &	fTurn ()
	full turn = 360 degrees = 2pi radians More...

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Caution: The following public data member documentation is currently extracted by hand, and thus could be out of date if this documentation was not updated when the class was modified;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

// Gravitational constant
Quantum<Double> G();

// Planck
Quantum<Double> h();

// HI line
Quantum<Double> HI();

// Gas constant
Quantum<Double> R();

// Avogadro
Quantum<Double> NA();

// electron charge
Quantum<Double> e();

// proton mass
Quantum<Double> mp();

// mp/me
Quantum<Double> mp_me();

// permeability vacuum
Quantum<Double> mu0();

// permittivity vacuum
Quantum<Double> epsilon0();

// Boltzmann
Quantum<Double> k();

// Faraday
Quantum<Double> F();

// mass electron
Quantum<Double> me();

// radius electron
Quantum<Double> re();

// Bohr's radius
Quantum<Double> a0();

// Solar radius
Quantum<Double> R0();

// IAU Gaussian grav. const **2
Quantum<Double> k2();

// quarter turn = 90 degrees = pi/2 radians
Quantum<Double> qTurn();

// half turn = 180 degrees = pi radians
Quantum<Double> hTurn();

// full turn = 360 degrees = 2pi radians
Quantum<Double> fTurn();

Motivation

Physical constants should be known with their proper dimensions

Definition at line 162 of file QC.h.

Member Function Documentation

static const Quantum<Double>& casacore::QC::a0 ( )

inlinestatic

Bohr's radius.

Definition at line 260 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::c ( )

inlinestatic

vel of light

Definition at line 170 of file QC.h.

References casacore::C::c.

static const Quantum<Double>& casacore::QC::e ( )

inlinestatic

electron charge

Definition at line 206 of file QC.h.

Referenced by a0(), epsilon0(), F(), G(), h(), k(), me(), mp(), mu0(), NA(), R0(), and re().

static const Quantum<Double>& casacore::QC::epsilon0 ( )

inlinestatic

permittivity vacuum

Definition at line 230 of file QC.h.

References casacore::C::c, e(), and casacore::C::pi.

static const Quantum<Double>& casacore::QC::F ( )

inlinestatic

Faraday.

Definition at line 242 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::fTurn ( )

inlinestatic

full turn = 360 degrees = 2pi radians

Definition at line 292 of file QC.h.

static const Quantum<Double>& casacore::QC::G ( )

inlinestatic

Gravitational constant.

Definition at line 176 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::h ( )

inlinestatic

Planck.

Definition at line 182 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::HI ( )

inlinestatic

HI line.

Definition at line 188 of file QC.h.

static const Quantum<Double>& casacore::QC::hTurn ( )

inlinestatic

half turn = 180 degrees = pi radians

Definition at line 286 of file QC.h.

static const Quantum<Double>& casacore::QC::k ( )

inlinestatic

Boltzmann.

Definition at line 236 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::k2 ( )

inlinestatic

IAU Gaussian grav.

const **2

Definition at line 273 of file QC.h.

References casacore::IAU_k.

static const Quantum<Double>& casacore::QC::me ( )

inlinestatic

mass electron

Definition at line 248 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::mp ( )

inlinestatic

proton mass

Definition at line 212 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::mp_me ( )

inlinestatic

mp/me

Definition at line 218 of file QC.h.

static const Quantum<Double>& casacore::QC::mu0 ( )

inlinestatic

permeability vacuum

Definition at line 224 of file QC.h.

References e(), and casacore::C::pi.

static const Quantum<Double>& casacore::QC::NA ( )

inlinestatic

Avogadro.

Definition at line 200 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::qTurn ( )

inlinestatic

quarter turn = 90 degrees = pi/2 radians

Definition at line 280 of file QC.h.

static Quantum<Double>& casacore::QC::R ( )

inlinestatic

Gas constant.

Definition at line 194 of file QC.h.

static const Quantum<Double>& casacore::QC::R0 ( )

inlinestatic

Solar radius.

Definition at line 266 of file QC.h.

References e().

static const Quantum<Double>& casacore::QC::re ( )

inlinestatic

radius electron

Definition at line 254 of file QC.h.

References e().

Friends And Related Function Documentation

friend class QC_init

friend

Definition at line 163 of file QC.h.

---

The documentation for this class was generated from the following file:

• casa/Quanta/QC.h