belfem::constant Namespace Reference

Variables
const real	pi = 3.141592653589793238462643383279502884
	circle number
const real	phi = 0.5 * ( 1.0 + std::sqrt( 5.0 ) )
	golden number
const real	deg = pi / 180.0
	degree
const real	c = 299792458.0
	speed of light in m/s ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?c
const real	mu0 = 1.25663706212e-6
	magnetic constant in V*s/(A*m) ( recommended value ) http://physics.nist.gov/cgi-bin/cuu/Value?mu0
const real	nu0 = 1./mu0
	inverse of magnetic constant in (A*m)/(V*s)
const real	epsilon0 = 1.0/( mu0*std::pow( c, 2 ) )
	electric constant in A*s/(V*m)
const real	G = 6.67430e-11
	gravity constant in N*m^2 / kg^2
const real	e = 1.602176634e-19
	elementary charge in C https://physics.nist.gov/cgi-bin/cuu/Value?e
const real	calTh = 4.184
	thermal calorie in SI units J/cal
const real	kB = 1.380649e-23
	Boltzman constant ( exact ) https://physics.nist.gov/cgi-bin/cuu/Value?k|search_for=boltzman.
const real	NA = 6.02214076e23
	Avogadro constant ( exact ) https://physics.nist.gov/cgi-bin/cuu/Value?na|search_for=avogadro.
const real	u = 0.001 / NA
	atomic mass unit-kilogram relationship https://physics.nist.gov/cgi-bin/cuu/Value?Rukg|search_for=unit
const real	Rm = kB * NA
	Gas constant in J/(K*mol) ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?r.
const real	Rm_cal = Rm / calTh
	Gas Constant in cal/(K*mol).
const real	h = 6.62607015e-34
	Planck constant in J / Hz ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?h.
const real	sigma
	Stephan Boltzman constant.
const real	L0 = std::pow( pi * kB / e , 2 ) / 3.0
	Sommerfeld value for the Lorentz number in V^2/K^2.
const real	g0 = 9.80665
	earth gravitational acceleration at sea level in m/s^2 https://physics.nist.gov/cgi-bin/cuu/Value?gn
const real	mu_earth = 3.986004418e14
	gravity parameter Earth ( G * M_earth )
const real	R_earth = std::sqrt( mu_earth / g0 )
	reference radius for Earth
const real	y2k = 2451544.5
const real	AU = 149597870700.
const real	l = 0.001
const real	km = 1000
const real	bar = 1.0e5
const real	atm = 1.01325e5
const real	rpm = constant::pi / 30.0
const real	in = 0.0254
const real	ft = 12.0 * in
const real	mi = 5280.0 * ft
const real	gal = 231.0 * in * in * in
const real	lb = 0.45359237
const real	lbf = lb * constant::g0
const real	psi = lbf / ( in * in )
const real	oz = gal / 128.0

Variable Documentation

atm

const real belfem::constant::atm = 1.01325e5

AU

const real belfem::constant::AU = 149597870700.

bar

const real belfem::constant::bar = 1.0e5

c

const real belfem::constant::c = 299792458.0

speed of light in m/s ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?c

calTh

const real belfem::constant::calTh = 4.184

thermal calorie in SI units J/cal

deg

const real belfem::constant::deg = pi / 180.0

degree

e

const real belfem::constant::e = 1.602176634e-19

elementary charge in C https://physics.nist.gov/cgi-bin/cuu/Value?e

epsilon0

const real belfem::constant::epsilon0 = 1.0/( mu0*std::pow( c, 2 ) )

electric constant in A*s/(V*m)

ft

const real belfem::constant::ft = 12.0 * in

G

const real belfem::constant::G = 6.67430e-11

gravity constant in N*m^2 / kg^2

https://physics.nist.gov/cgi-bin/cuu/Value?bg|search_for=gravity

g0

const real belfem::constant::g0 = 9.80665

earth gravitational acceleration at sea level in m/s^2 https://physics.nist.gov/cgi-bin/cuu/Value?gn

gal

const real belfem::constant::gal = 231.0 * in * in * in

h

const real belfem::constant::h = 6.62607015e-34

Planck constant in J / Hz ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?h.

using the new international definition

in

const real belfem::constant::in = 0.0254

kB

const real belfem::constant::kB = 1.380649e-23

Boltzman constant ( exact ) https://physics.nist.gov/cgi-bin/cuu/Value?k|search_for=boltzman.

km

const real belfem::constant::km = 1000

l

const real belfem::constant::l = 0.001

L0

const real belfem::constant::L0 = std::pow( pi * kB / e , 2 ) / 3.0

Sommerfeld value for the Lorentz number in V^2/K^2.

lb

const real belfem::constant::lb = 0.45359237

lbf

const real belfem::constant::lbf = lb * constant::g0

mi

const real belfem::constant::mi = 5280.0 * ft

mu0

const real belfem::constant::mu0 = 1.25663706212e-6

magnetic constant in V*s/(A*m) ( recommended value ) http://physics.nist.gov/cgi-bin/cuu/Value?mu0

mu_earth

const real belfem::constant::mu_earth = 3.986004418e14

gravity parameter Earth ( G * M_earth )

NA

const real belfem::constant::NA = 6.02214076e23

Avogadro constant ( exact ) https://physics.nist.gov/cgi-bin/cuu/Value?na|search_for=avogadro.

nu0

const real belfem::constant::nu0 = 1./mu0

inverse of magnetic constant in (A*m)/(V*s)

oz

const real belfem::constant::oz = gal / 128.0

phi

const real belfem::constant::phi = 0.5 * ( 1.0 + std::sqrt( 5.0 ) )

golden number

pi

const real belfem::constant::pi = 3.141592653589793238462643383279502884

circle number

psi

const real belfem::constant::psi = lbf / ( in * in )

R_earth

const real belfem::constant::R_earth = std::sqrt( mu_earth / g0 )

reference radius for Earth

Rm

const real belfem::constant::Rm = kB * NA

Gas constant in J/(K*mol) ( exact ) http://physics.nist.gov/cgi-bin/cuu/Value?r.

using the new international definition

Rm_cal

const real belfem::constant::Rm_cal = Rm / calTh

Gas Constant in cal/(K*mol).

rpm

const real belfem::constant::rpm = constant::pi / 30.0

sigma

const real belfem::constant::sigma

Initial value:

          = 2.0 * std::pow( pi, 5 )
            * std::pow( kB, 4 ) /
( 15.0 * std::pow( h, 3 ) * std::pow( c, 2 ) )

Stephan Boltzman constant.

u

const real belfem::constant::u = 0.001 / NA

atomic mass unit-kilogram relationship https://physics.nist.gov/cgi-bin/cuu/Value?Rukg|search_for=unit

y2k

const real belfem::constant::y2k = 2451544.5