Poisson's equation is a fundamental partial differential equation that relates the Laplacian of a scalar potential to the distribution of charge density in electrostatics. It can be expressed as $$\nabla^2 \phi = -\frac{\rho}{\epsilon_0}$$, where \(\phi\) is the electric scalar potential, \(\rho\) is the charge density, and \(\epsilon_0\) is the permittivity of free space. This equation shows how electric potential is influenced by charge distributions, which is crucial in understanding electric fields and potentials.
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