XMM-Newton Science Analysis System


ssclib (ssclib-4.36.1) [xmmsas_20230412_1735-21.0.0]

Fundamental physical constants

Name		Value		Description
SpeedOfLight		299792458.0		$c$ (m s$^{-1}$)
PlanckH		$6.62606876\times 10^{-34}$		$h$ (J s)
NewtonG		$6.673\times 10^{-11}$		$G$ (m$^3$ kg$^{-1}$ s$^{-2}$)
ElectronQ		$1.602176462\times 10^{-19}$		$e$ (C)
Boltzmann		$1.3806503\times 10^{-23}$		$k$ (J K$^{-1}$)
StefanBoltzmann		$5.670400\times 10^{-8}$		$\sigma$ (W m$^{-2}$ K$^{-4}$)
Avogadro		$6.02214199\times 10^{23}$		$N_{\rm {A}}$ (mol$^{-1}$)