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石油及水的介电性质 电介质在外电场的作用下将引起极化,极化的基本形式有二种;一种是非极性分子的极化,就是当没有外电场时,分子的正、负电荷中心相互重合,不显极性,但是在外电场作用下,正负电荷中心发生相对位移,而形成电偶极子,当外电场撤消后,正负电荷中心在“弹性恢复力”作用下又重合起来。另一种情况是极性分子的极化,当没有外电场时,分子的正负电荷中心就不重合,相距一段微小的距离,对外显出极性,相当于电偶极子,但是由于热运
Dielectric properties of petroleum and water Dielectric in the external electric field will cause polarization, the polarization of the basic form of two kinds; one is the polarization of non-polar molecules, that is, when there is no external electric field, the molecular positive and negative charge Center coincides with each other, not significant polarity, but under the action of an external electric field, positive and negative charge center relative displacement occurs, and the formation of electric dipole, when the external electric field is withdrawn, the positive and negative charge centers in the “elastic restoring force” under the action of coincidence stand up. Another case is the polarization of polar molecules, when there is no external electric field, the positive and negative charge centers of molecules do not coincide, separated by a small distance, the polarity of the outward, equivalent to an electric dipole, but due to heat Shipped