Figure 2.

Electric potentials generated by two current source densities. The perspective view (a) and top view (c) of the current source density ${\mathbf{f}}^{+}$; the perspective view (b) and top view (d) of the electric potential ${\mathbf{u}}^{+}$ generated by the current source density. Top view of the electric potential ${\mathbf{u}}^{\square }$ (f) generated by ${\mathbf{f}}^{\square }$ (e). Here and in Figs. 3, 4, 5, 6, a top view image presents a transparent projection of physical quantities at finite element nodes on the plane. The size of the nodes in the images is proportional to the absolute value of the physical quantities it represents, i.e. the nodes with zero-values are not displayed. Dashed lines show the position of the paths, along which synthetic measurements of the electric potential have been made.