In geometry, the elliptic coordinate system is a two-dimensional orthogonal coordinate system in which the coordinate lines are confocal ellipses and hyperbolae. The two foci and are generally taken to be fixed at and, respectively, on the -axis of the Cartesian coordinate system.
Read more about Elliptic Coordinate System: Basic Definition, Scale Factors, Alternative Definition, Alternative Scale Factors, Extrapolation To Higher Dimensions, Applications
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“Intimately concerned as we are with the system of Europe, it does not follow that we are therefore called upon to mix ourselves on every occasion, with a restless and meddling activity, in the concerns of the nations which surround us.”
—George Canning (1770–1827)