磁标势的物理意义，以及如何用它来设计电磁铁
The physical meaning of the magnetic scalar potential, and how to use it to design an electromagnet
摘要：
利用标量磁势可以准确、高效地设计电磁铁。我将描述一个实用的构造算法：在“目标”区域中的规定场（仅受麦克斯韦方程组约束）指定边界条件，该边界条件唯一地确定周围场“返回”区域中的电势。根据磁标量势的物理表示的要求，所得线圈的导电元件以相等的电势增量沿着每个区域的表面上的等电势定向。我给出了一些例子和评论的精度限制的构造字段。
英文摘要：
The magnetic scalar potential can be used to design electromagnets accurately and efficiently. I will describe a practical construction algorithm: the prescribed field in a "Target" region (constrained only by Maxwell's equations) specifies boundary conditions which uniquely determine the potential in the surrounding field "Return" region. As required by the physical representation of the magnetic scalar potential, the conducting elements of the resulting coil are directed along equipotentials on the surface of each region, at equal increments of the potential. I give some examples and comments on the limits of precision of the constructed field.
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