## Table Of Physical Constants

Name Symbol Value Unit Number $\pi$ $\pi$ 3.14159265358979323846 Number e e 2.71828182845904523536 Euler’s constant $\gamma$ $\begin{aligned} \gamma &= \lim\limits_{n\rightarrow\infty}\left(\sum\limits_{k=1}^n 1/k-\ln(n)\right) \\ &= 0.5772156649 \end{aligned}$ Elementary charge $e$ $1.60217733\cdot10^{-19}$ C Gravitational constant $G,\kappa$ $6.67259\cdot10^{-11}$ m$^3$kg$^{-1}$s$^{-2}$ Fine-structure constant $\alpha=\frac{e^{2}}{2hc\epsilon_0}$ $\approx \frac{1}{137}$ Speed of light in vacuum $c$ $2.99792458\cdot10^8$ m/s (def) Permittivity of the vacuum $\varepsilon_0$ $8.854187\cdot10^{-12}$ F/m Permeability of the vacuum $\mu_0$ …