Study On The Partial Contents About Solution And Description Of The Equipotential Line And Power Line For The Static Field And Electrostatic Shielding

This article through studying on the solution and description of the Equipotential line and Power line for the static field and electrostatic shielding partial contents, comprehended recent development in modern physics teaching, as well as problems. Although there are many teaching materials about the theory of electromagnetic, the range of knowledge is not wide and there are many paradoxical questions to be explained from a higher stratification. In view of the above questions, what problems people should firstly resolve in physics teaching are how to put the new knowledge,new concept of physics into practice of physics teaching, and how to foster students'scientific quality and the innovation ability. This article analyses and discusses several typical difficult problems related to the solution of the electromagnetic field in electrostatic field, which will benefit the teaching of the theory of electromagnetic field.This paper mainly aims at the research into the solutions of the electrostatic field when facing several kinds of different boundaries. In the electromagnetics teaching materials, the most basic solution method of the electrostatic field is the electric field principle of superposition. This method is employed widely, but regarding some complex boundary-value question, it only obtains the formal solution. This article mainly utilizes some computational methods with specific skills to solve some electrostatic field questions with quite complex boundary shape. There are many kinds of ways to solve the electrostatic field of two-dimensional Laplace's equation or the Poisson's equation, like the separation of variables, Green's function or alternative means. But if their boundary shapes are quite complex, it is extremely difficult to use these usual methods, and, in general, it is impossible to work out even there is such peculiar instance as analytic solution, or obtains the approximate solution. The static electricity field for two parallel cylinders with eccentric axes or separated ,angular space, along with solution of the charged conductor of cylinder all can be explained by this kind of situation.The conformal mapping method and the electrical images are the computational methods with specific skills, to solve problems in the electrostatic field. If use well, they...