14 List of physical constants

The following table lists all of the physical constants which are defined by default in Pyxplot:

Name	Description	Approximate Value
`e`	$e$	$2.7182818$
`euler`	The Euler constant	$0.57721566$
`false`	Boolean truth value	0
`goldenRatio`	The golden ratio	$1.618034$
`i`	The square-root of $-1$	$i$
`phy.alpha`	The fine-structure constant	$0.0072973525$
`phy.c`	The speed of light	$299792458\, \mathrm{m}/\mathrm{s}$
`phy.epsilon_0`	The permittivity of free space	$8.85418782\times 10^{-12}\, \mathrm{F}/\mathrm{m}$
`phy.G`	The gravitational constant	$6.673\times 10^{-11}\, \mathrm{m}^3/\mathrm{kg}/\mathrm{s}^{2}$
`phy.g`	The mean terrestrial acceleration due to gravity	$9.80665\, \mathrm{m}/\mathrm{s}^{2}$
`phy.h`	The Planck constant	$6.62606896\times 10^{-34}\, \mathrm{J}\, \mathrm{s}$
`phy.hbar`	The Planck constant $\, /\, 2\pi$	$1.05457163\times 10^{-34}\, \mathrm{J}\, \mathrm{s}$
`phy.kB`	The Boltzmann constant	$1.3806504\times 10^{-23}\, \mathrm{J}/\mathrm{K}$
`phy.Lsun`	The luminosity of the Sun	$3.839\times 10^{26}\, \mathrm{W}$
`phy.Msun`	The mass of the Sun	$1.98892\times 10^{30}\, \mathrm{kg}$
`phy.mu_0`	The permeability of free space	$1.25663706\times 10^{-6}\, \mathrm{N}/\mathrm{A}^{2}$
`phy.mu_b`	The Bohr magneton	$9.27400899\times 10^{-24}\, \mathrm{J}/\mathrm{T}$
`phy.m_e`	The mass of the electron	$9.10938188\times 10^{-31}\, \mathrm{kg}$
`phy.m_muon`	The mass of the muon	$1.88353109\times 10^{-28}\, \mathrm{kg}$
`phy.m_n`	The mass of the neutron	$1.67492716\times 10^{-27}\, \mathrm{kg}$
`phy.m_p`	The mass of the proton	$1.67262158\times 10^{-27}\, \mathrm{kg}$
`phy.m_u`	The unified mass constant	$1.66053878\times 10^{-27}\, \mathrm{kg}$
`phy.NA`	Avogadro’s number	$6.02214199\times 10^{23}\, \mathrm{mol}^{-1}$
`phy.q`	The fundamental charge	$1.60217649\times 10^{-19}\, \mathrm{C}$
`phy.R`	The gas constant	$8.314472\, \mathrm{J}/\mathrm{K}/\mathrm{mol}$
`phy.Rsun`	The radius of the Sun	$695500000\, \mathrm{m}$
`phy.Ry`	The Rydberg constant	$10973732\, \mathrm{m}^{-1}$
`phy.sigma`	The Stefan-Boltzmann constant	$5.67040047\times 10^{-8}\, \mathrm{kg}/\mathrm{s}^{3}/\mathrm{K}^{4}$
`pi`	$\pi$	$3.1415927$
`true`	Boolean truth value	1
`version`	Pyxplot version string	“0.9.2”