Function e2_gaussian_f (o2scl_const)

O2scl : Function List

template<class fp_t>
fp_t o2scl_const::e2_gaussian_f()

Electron charge squared in Gaussian units (derived)

In Gaussian Units:

\[\begin{split}\begin{eqnarray*} &\vec{\nabla} \cdot \vec{E} = 4 \pi \rho \, , \quad \vec{E}=-\vec{\nabla} \Phi \, , \quad \nabla^2 \Phi = - 4 \pi \rho \, , &\\& F=\frac{q_1 q_2}{r^2} \, , \quad W=\frac{1}{2} \int \rho V d^3 x =\frac{1}{8 \pi} \int | \vec{E} |^2 d^3 x \, , \quad \alpha=\frac{e^2}{\hbar c}=\frac{1}{137}& \end{eqnarray*}\end{split}\]