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名师讲堂:Vector Diagrams–A New Way to Look at Electromagnetic Fields, Potentials, and Gauges
文:教师发展中心 来源:党委教师工作部、人力资源部(教师发展中心) 时间:2015-07-10 3319

  人力资源部教师发展中心开展“名师讲堂”系列活动,定期邀请国内外知名专家学者、国家级教学名师等作专题报告,旨在加强广大师生的学术思想交流和碰撞,促进青年教师成长,开拓学生视野。

  “名师讲堂”第13期活动特别邀请IEEE Fellow、美国德州农工大学Robert D. Nevels教授主讲,欢迎广大师生参与,具体安排如下:

  一、主 题:Vector Diagrams-A New Way to Look at Electromagnetic Fields, Potentials, and Gauges

  二、时 间:2015年7月11日(周六)上午9:00

  三、地 点:沙河校区二教306

  四、主讲人:Robert D. Nevels(IEEE Fellow、美国德州农工大学教授)

  五、主讲内容:

  In its most general form the electromagnetic field is developed through a consistent set of vector theorems and principles. The fields and potentials of electromagnetics can be visualized by vector figures dawn on a Cartesian coordinate system axis. However, perhaps the best way to visualize the interaction of Maxwell’s equations as well as the potentials associated with the many possible gauges of electromagnetics is with a vector diagram originally proposed by Wilton1. An unusual aspect of the diagram is that its coordinate system has one longitudinal and two transverse axes. A vector in this system is determined by the mathematical operations that select these components: selects the longitudinal component of a vector and reveals its two transverse components.In recent years some useful observations, attributed to the diagram,have been made concerning the electromagnetic field potentials associated with various gauges. In this presentation I will review the construction of the diagram, show how it can be used to recover Maxwell’s equations, and how we have obtained a new generalized gauge we call the generalized Kirchhoff gauge which, together with the velocity gauge, now covers all possible  gauges of electromagnetic field theory. 1D.R. Wilton, “A Vector Diagram of Maxwell’s Equations,” IEEE Antennas and Propag. Mag. 37, 7-11 (1995).

  六、主讲人简介:

  Robert D. Nevels教授,IEEE Fellow, 国际电子电气工程学会天线与传播学会前任主席,美国德州农工大学电气与计算机工程系副主任。先后多次获得克利尔莱克IEEE技术教育工作者奖、德州农工大学杰出教授奖、德州农工大学卓越教学奖等多项荣誉。

  Robert D. Nevels教授的主要研究领域包括电磁学、纳米光子学、电磁散射、天线等。他发表的“电磁场中的库伦规范格林函数”专题论文,为电磁场研究提供了一个很好的思路。此外,他负责编辑的《光学器件和工程手册》有效地帮助了该领域的研究工作者进行进一步的研究。

  七、主办单位:人力资源部教师发展中心

    承办单位:物理电子学院


                   人力资源部教师发展中心

                     2015年7月10日


编辑:林坤  / 审核:罗莎  / 发布:一戈