Editing Boundary value problem (section)

==Applications==
===Electromagnetic potential===
{{See also|Laplace's equation#Boundary conditions}}
In [[electrostatics]], a common problem is to find a function which describes the [[electric potential]] of a given region. If the region does not contain charge, the potential must be a solution to [[Laplace's equation]] (a so-called [[harmonic function]]). The boundary conditions in this case are the [[Interface conditions for electromagnetic fields]]. If there is no [[current density]] in the region, it is also possible to define a [[magnetic scalar potential]] using a similar procedure.