电磁学

The purpose of the experiment, Gauss also invented the dual magnetometer, which he was right on the issue of electromagnetic a very meaningful results.

为了进行实验，高斯还发明了双线磁力计，这是他对电磁学问题研究的一个很有实际意义的成果。

Contents include: Newtonian mechanics and relativity based, thermal and mechanical vibration, and wave, electromagnetic wave optics and quantum physics foundation etc.

内容包括：牛顿力学及狭义相对论力学基础、热学、电磁学、振动与波动、波动光学和量子物理学基础等。

And the capabilities and limitations of this method are accessed. Then a testing system is designed to detect current of micro-ampere to milliampere level. The experimental results show that the acoustic response is proportional to the current in the tissue.

基于连续介质和电磁学理论，建立偶极子模型，为磁声耦合检测神经电流提供数学基础，得到此方法分析生物体内和体外电流的能力和限制。

Finally, the results of RCS computed by physical optics with NURBS models are illustrated, which verify the validity of the modeling method in Computational Electromagnetics.

最后，利用基于NURBS曲面模型的物理光学方法计算目标的RCS，通过结果的分析比较验证了该建模方法在计算电磁学领域中应用的有效性。

But due to the difficulties of the theoretical calculation and the limitation of the technique of image display, only some two-dimensional graphs of electromagnetic field of a planar set of point charges or symmetrically and uniformly charged bodies, which ignores the boundary effect, are introduced in the present electromagnetics teaching materials.

然而，由于受理论计算和图象显示技术等因素的限制，目前的电磁学教材中，通常只能给出平面分布的点电荷系或具有较强对称性、忽略边界效应的带电体的电力线和等势线的二维平面图。

Secondly, on the basis of electromagnetic theory, we have described the characteristics of surface plasmon wave and its exciting configuration.

其次，我们从电磁学基本理论出发，描述了表面等离子波的特殊性质以及产生表面等离子波的激发结构。

The FFT of Helmholtz equation on the regular domain is studied. And the multifrontal algorithm is used to solve the matrix equations in computational electromagnetics.Finally, the finite-difference approximate forms of Maxwell equations and the Despres transmission condition are discussed.

为了充分提高算法的计算效率，研究了规则区域上Helmholtz方程的FFT快速算法，以及有效地将多波前算法引入计算电磁学领域用于求解差分稀疏矩阵方程。

Maxwell's four equations summarize everything there is to know on electromagnetism.

麦克斯韦的四个等式总结了在电磁学上已知的事物。

Electromagnetics course mainly including basic phenomena and laws of electro- magnetics, electrostatic field in vacuum, in conductor and in electric medium, electric energy, stabilized current, stabilized magnetic field and its basic laws, electric and magnetic fields caused by a moving chager in lower speed, the transform of electric and magnetic fields between different systems of coordinates, inductive laws, eddy field, self inductance, mutual inductance and transient, molecule current and magnetic substance, ferromagnet, boundary conditions, magnetic circuit theorem, energy of magnetic field and density of magnetic energy, displacement current, Maxwell's equation, electromagnetic wave, Poynting vector.

电磁学课程的主要内容包括：静电的基本现象和基本定律，真空中的静电场，导体和电介质中的静电场，电场的能量与电场能量密度，稳恒电流，稳恒电流磁场的基本定律，运动电荷的电磁场，不同参照系之间电磁场的变换，电磁感应定律，涡旋电场，互感，自感，暂态过程，分子电流与磁介质，铁磁体，边界条件，磁路定理，磁场的能量和磁能密度，位移电流， Maxwell 方程组，电磁波和玻印廷矢量等。

Phys. The science of matter and energy and of interactions between the two, grouped in traditional fields such as acoustics, optics, mechanics, thermodynamics, and electromagnetism, as well as in modern extensions including atomic and nuclear physics, cryogenics, solid-state physics, particle physics, and plasma physics.

物理，物理学：有关物质和能量及两者之间相互作用的科学，传统上分为声学、光学、机械学、热力学和电磁学，现今又扩展到包括原子物理、核物理、低温学、固体物理学、微粒物理学和等离子体物理学

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。