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通过库仑定律和麦克斯韦方程推导出有限长均匀带电直线的电场线方程和等势线方程,并利用绘图软件Winplot画出了电场线与等势线函数图像,直观地表现了电场的特点. 相似文献
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沿直线分布电荷体系电场线的解析解 总被引:2,自引:1,他引:1
通过求解电场线所满足的微分方程,得到了沿直线分布电荷体系电场线的严格解析解,根据所得电场线簇方程,讨论了各种沿直线分布电荷体系的电场线特点,并在计算机上利用Mathematica软件绘出了相应的电场线分布图. 相似文献
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利用复数坐标系z上的施瓦茨-克利斯多菲变换和镜像法,计算由接地导体限定的无限深槽内线电荷电场中的电势分布和场强分布,给出电场线与等势线方程,并利用数学软件Matlab绘制出其电势分布三维图、电场线和等势线(面)图. 相似文献
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用电像法将点电荷与中性导体球系统的电场化为一维点电荷分布系统的电场,导出电场线满足的方程,利用Mathematica软件画出了电场线簇图形,并对点电荷与接地导体球、点电荷与带电导体球两系统的电场线进行了描绘。 相似文献
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Analytical expressions of electric fields inside and outside an
anisotropic dielectric sphere are presented by transforming
an anisotropic medium into an isotropic one based on the multi-scale
transformation of electromagnetic theory. The theoretical
expressions are consistent with those in the literature. The inside
electric field, the outside electric field and the angle between
their directions are derived in detail. Numerical simulations show
that the direction of the outside field influences the magnitude of the
inside field, while the dielectric constant tensor greatly affects
its direction. 相似文献
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保角变换法计算均匀带电圆柱与接地导体平面间的电场 总被引:1,自引:1,他引:0
根据保角变换法,通过对均匀带电圆柱与接地导体平面间的静电场进行的研究,得到了电势与电场强度的表达式,并导出了等势线和电场线函数. 相似文献
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Molecular dynamics simulation of the response of bi-disperse polyelectrolyte brushes to external electric fields 下载免费PDF全文
Langevin dynamics simulations have been performed to investigate the response of bi-disperse and strong polyacid chains grafted on an electrode to electric fields generated by opposite surface charges on the polyelectrolyte(PE)-grafted electrode and a second parallel electrode. Simulation results clearly show that, under a negative external electric field, the longer grafted PE chains are more strongly stretched than the shorter ones in terms of the relative change in their respective brush heights. Whereas under a positive external electric field, the grafted shorter chains collapse more significantly than the longer ones. It was found that, under a positive external electric field, the magnitude of the total electric force acting on one shorter PE chain is larger than that on one longer PE chain, or vice versa. The effects of smeared and discrete charge distributions of grafted PE chains on the response of PE brushes to external electric fields were also examined. 相似文献
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阐述检测物体是否产生了电场的方法;通过实际检测证实立方体永磁体既产生了负静电场,也产生了正静电场,并测定了具体的场强. 相似文献
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用电介质镜像法计算线电荷与介质圆柱所形成的电场 总被引:1,自引:0,他引:1
利用电介质镜像法计算线电荷与介质圆柱体所形成的电场,给出电势与场强的解析表达式,进一步得出等势线与电场线方程,并利用软件MATLAB绘制出电场线和等势线(面)图予以验证. 相似文献