4 List of physical constants

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

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Name	Description	Approximate Value
`e`

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

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