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 magnetic induction intensity Distribution of the whole-space magnetic induction intensity B in a circular current 圆电流全空间磁感应强度B的分布 (2) Optical property of the Zeeman part is investigated experimentally. When the magnetic induction intensity is bigger than 3mT, the frequency difference of the laser will become stabilization and it is directly proportional to the magnetic induction intensity and inversely proportional to the peak-peak value of the beat frequency. (2)实验研究了激光器塞曼部分的光学输出特性，观察到当纵向磁场大于3mT时输出激光的频率将发生分裂，证实了磁感应强度与频差成正比，与拍频信号峰-峰值成反比。 The present paper expounds the Biot-Safar Law and deduces formulas for magnetic induction intensity B induced by several typical electric currents, thus giving out convenient methods of solution. 本文对Biot-Safar定律的应用进行了详细的讲述，并推证和推出了几种典型电流产生的磁感应强度B的计算公式，重点是给出了解题的简便方法． Through the discussion about electric field intensity, potential displacement, magnetic induction intensity and magnetic field intensity, we find out electric field intensity and potential displacement do not only have relation with free electric charge, but also with polarization charge; 本文通过对电场强度、电位移、磁感应强度、磁场强度的讨论得知 :电场强度和电位移不仅与自由电荷有关 ,而且与极化电荷有关 ; In this article,how to analyse and calculate the electric field intensity,potential and magnetic induction intensity in the Electromagnetics is studied by using the Micromethod. 归纳总结了微元法 (元素法 )在处理电磁学问题中的特点和普遍意义 ,用微元法对电磁学中一些典例的电场强度、电位、磁感应强度进行了分析和计算 ,尤其对过程中微元的选取条件和选取方法作了重点介绍 . Making use of the polar coordinates and vector-algebra carried out the universal formula of the magnetic induction intensity at the focus of the polar coordinates plane curve electric current. 利用极坐标系及矢量代数对极坐标系下的平面曲线电流,在其极点处的磁感应强度进行了推导,得到了此类问题的通用公式. Discussing the magnetic induction intensity at the pole (or focus) of the conic- electric-current, and analysis the conclusion through Mathematica5.0. 利用这一通用公式讨论了圆锥曲线电流在其极点(或者焦点)处的磁感应强度,并利用Mathematica5.0对所得结论进行了分析. The necessary and sufficient condition of the irrelevance between magnetic field intensity and magnetic medium is deduced, and a new method for calculating the distribution of magnetic induction intensity at the existence of magnetic medium is introduced. 推导出磁场强度H与磁介质无关的充要条件,获得了一种计算有介质存在时磁感应强度B分布的简单方法.

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2008 CNKI－中国知网

2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社