A curve in two dimensions on which the value of a function 
is a constant. Other synonymous terms are isarithm, isopleth,
and contour line. A plot of several equipotential
curves is called a contour plot.
Equipotential Curve
See also
Contour Line, Contour Plot, LemniscateExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Equipotential Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EquipotentialCurve.html