摘要
求解均匀极化的电介质球内的退极化场时,由于球面上极化面电荷分布不均匀,一般都用两等大、原本重叠、带均匀等量异号电荷的球体错开微小位移的模型来等效地求解;但这种模型为何与原情景等效,是令初学者困惑的地方.对此,文章给出了一个简单的证明.
To solve the depolarization field in the uniform polarized dielectric ball, people commonly assume that there is a tiny displacement between two isochoric balls, which overlap originally with the uniform equivalent different charges, because of the non--uniform distribution of the polarized surface charges on the sphere. Why this model is equivalent with the original sight is a problem confusing the beginners. For this reason, this paper gives a simple proof of this assumption.
出处
《物理与工程》
2013年第2期24-25,共2页
Physics and Engineering
关键词
均匀极化
电介质球
退极化场
等效
厚度
面电荷密度
uniform polarization
dielectric ball depolarization field equivalent
thickness
density of surface charge
