symbolic vector used to denote scalar or vector differential operators operating on scalar or vector field quantities, and which, in orthonormal Cartesian coordinates, is represented by where ex, ey, ez are unit vectors along the x, y, z axes Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=101-11-36
symbolic vector used to denote scalar or vector differential operators operating on scalar or vector field quantities, and which, in orthonormal Cartesian coordinates, is represented by where ex, ey, ez are unit vectors along the x, y, z axes