圈电磁学03-01：电介质极化 口非极性分子 位移量10-15m 甲烷分子CH4 正负电荷 H H 0 0 中心重合 *H p.=0 p~ex10-l5m1.6×10-34Cm (a) E An electric feld In the absence of causes the mole. anelectric field. cules'positive and nonpolar molecules negative charges are not electric to separate dipoles. slightly.making the molecule effectively polar.电磁学03-01: 电介质极化  非极性分子 位移量10-15m p ~ e10-15m~1.610-34Cm