Editing Contour line (section)

==== Electrostatics ====
An '''[[isopotential map]]''' is a measure of electrostatic potential in space, often depicted in two dimensions with the electrostatic charges inducing that [[electric potential]]. The term '''[[equipotential]] line''' or '''isopotential line'''  refers to a curve of constant [[electric potential]]. Whether crossing an equipotential line represents ascending or descending the potential is inferred from the labels on the charges. In three dimensions, '''[[equipotential]] surfaces''' may be depicted with a two dimensional cross-section, showing [[equipotential]] lines at the intersection of the surfaces and the cross-section.

The general mathematical term [[level set]] is often used to describe the full collection of points having a particular potential, especially in higher dimensional space.