摘要
运用拉普拉斯方程对均匀极化电介质被挖出一个球形空腔的内、外电场强度进行了新的运算,得到了与一些教材不同的结论.同时指出了绝缘材料中的气泡对材料绝缘性能的影响与危害.
The electric-field intensity inside and outside of the spherical cavity in polarized homogeneous dielectric are recalculated by use of Laplace equation, and the conclusion are different from those in some textbooks. The influence and hazard of the air bubble to the insulating properties of materials are pointed out.
出处
《物理与工程》
2007年第5期6-7,10,共3页
Physics and Engineering
关键词
电介质
极化
空腔
电场强度
dielectric
polarization
cavity
electric-field intensity
