Abstract: | The rotational degenerated bipolar coordinates and the solution of Laplace equation for axial syrnmetry are developed in this paper This solution is then is then used to solve the electrostatic of a dielectric structure of multi-layers,resting on an carthed plane in a uniform perpendlar field,the earthed plane in a uniform field is used to check the value field strength at the top of the sphere found firsck by this author previously by the rnethod of images. |