稳定电流场的反射、透射、衍射——波动性

稳定电流场是否有反射、透射现象,它们服从什么规律,以及稳定电流场是否具有波动性等问题,本文将予以探讨。 一、稳定电流场的反射与透射 在用“电像法”解点电流源平界面问题时,一般用反射、透射的概念,并用虚源等效地代替界面,指的是全界面的、源的“反射”与“透射”,要求界面为无限平面,其结果没有普遍性。因此,尚不能当作一般的物理规律来看待。从弹性波与稳定电流场的类比中,有人曾

REFLECTION,TRANSMISSION AND DIFFRACTION——FLUCTUATION OF STEADY CURRENT FIELD

By considering the marginal condition of steady current field on the interface of diele-trics of uniform division and isotropy, this paper resolves the current field at any point on any continuous smooth interface into incident field, reflection field and transmission field, and derives the formula expressing the relation between direction and quantity. On this basis, total reflection of steady current field is discussed. It also further reveals diffraction in steady current field and proves that the steady current field has fluctuation. Finally, some application prospect of this paper is preliminary expected. It proposes an approach of improving the quantitativeeffect for prospecting of resistivity method--realizing the transition from volume prospectingto point prospecting.