电动力学研究性教学探索与实践

在电动力学教学实践中,我们遵循按社会需求分流培养、因材施教的原则.注重课内与课外结合,文献研读与讨论结合,基础知识与物理前沿进展结合;鼓励和指导有能力的学生提早进入科研训练,选拔对理论物理有兴趣的高年级学生组成理论物理强化班,致力培养物理科学研究后备人才.教学与科研相结合的师资队伍,为研究性教学提供了保证.     

经典电动力学现代化学习的思考与设计

根据高校目前电动力学教学的实际情况,运用教学设计的原理、方法分析现代化学习对电动力学教学的影响和作用,并进行探索与实践研究.得出利用教学设计原理进行电动力学教学以及对学生能力进行培养的理念和策略.     

信息技术融入电动力学课程建设的思考与实践

电动力学是物理学专业的专业核心课,是培养新时代物理学人才重要的支撑课程.本文围绕课程教学目标、教学内容、教学方法、教学评价等方面,阐述了融入信息技术、采用线上线下混合式教学模式,建设电动力学课程的思考和实践研究.     

电动力学课程的MATLAB辅助教学探索与实践

为解决电动力学课程由于概念深奥抽象、公式推导繁杂和电磁相互作用复杂等原因而普遍存在教学效率低下的问题,我们围绕Matlab辅助教学与传统课堂教学有机结合进行了探索与实践.借助Matlab数值计算能力,检验和验证公式;发挥Matlab绘图和动画功能,可视化与模拟仿真电磁场;依托Matlab编程计算优势,引入学科前沿知识,引导学生探究性学习.实践结果表明,Matlab辅助教学能有效激发学生学习兴趣,培养其自主学习与创新能力,提高课堂教学效果.     

物理学史课程的教学改革与实践

结合在物理学史课程实际教学过程中出现的问题,从教学内容、教学手段、教学方法、教学模式和考核方式五个方面进行了改革与实践.从近两年的教学效果来看,教学质量有明显的提升.     

对工科物理教学改革的思考和实践

本文将近几年来我们对大学工科物理的教学改革实践作一简单介绍．     

原子物理学课程的教学改革与实践

文章首先对原子物理学课程进行定位，指出原子物理学是普通物理的一部分，它属于近代物理，并概述了原子物理学课程的特点；文章接着对原子物理学课程的教学体系与教学内容的改革方面的一些重要问题分别进行了讨论；文章最后详述了原子物理学的教学改革与实践以及在教学中培养分析问题和解决问题的能力方面的尝试。     

电磁理论课程教学改革与实践

文章提出了构建电磁理论课程体系的基本原则，以四大客体为研究对象，四大关系为纲要，三大基本假设和场的迭加原理作为理论基础，适当吸收现代物理学和高新技术的科学结论和观点，将电磁学与电动力学整合为电磁理论课程，突出电磁场的波动性和相对性，拓展加深电磁势的内容，注重电磁理论所隐含的科学人文思想的发掘。对教学实践的具体成效进行全面总结。     

通信专业实践教学改革与创新人才培养研究

实践教学在高校创新性人才培养过程中起着重要而独特的作用。本文结合我校通信专业实验室的现状,分析了当前实验教学存在的问题,提出了有利于创新人才培养的通信专业实践教学的几种方案。     

有效实施物理反思教学的实践与思考

1写一堂课的得意之处1.1写自己的教学机智一堂课结束后,回顾教学过程,体会学生学习的成功,教师总有得意之处:或启发得当,或例证精辟,或情境创设成功,或实验设计的成功,或学生"灵感"顿悟……不论是哪方面的收获,经过不断地积累和     

Dimensions and units in electrodynamics

We sketch the foundations of classical electrodynamics, in particular the transition that took place when Einstein, in 1915, succeeded to formulate general relativity. In 1916 Einstein demonstrated that, with a choice of suitable variables for the electromagnetic field, it is possible to put Maxwells equation into a form that is covariant under general coordinate transformations. This unfolded, by basic contributions of Kottler, Cartan, van Dantzig, Schouten & Dorgelo, Toupin & Truesdell, and Post, to what one may call premetric classical electrodynamics. This framework will be described shortly. An analysis is given of the physical dimensions involved in electrodynamics and subsequently the question of units addressed. It will be pointed out that these results are untouched by the generalization of classical to quantum electrodynamics (QED). We compare critically our results with those of L.B. Okun which he had presented at a recent conference.     

Black holes and the classical model of a particle in Einstein non-linear electrodynamics theory

Modified by a logarithmic term, the non-linear electrodynamics (NED) model of the Born–Infeld (BI) action is reconsidered. Unlike the standard BI action, this choice provides interesting integrals of the Einstein-NED equations. It is found that the spherical matching process for a regular black hole entails indispensable surface stresses that vanish only for a specific value of the BI parameter. This solution represents a classical model of an elementary particle whose radius coincides with the horizon. In flat spacetime, a charged particle becomes a conducting shell with a radius proportional to the BI parameter.     

以教材、教学内容建设为核心创建国家级精品课程"热学"

国家级精品课程“热学”的主要特色是：在教材和教学内容上的“实、新、宽、活”，强调规律与科学前沿以及自然科学有关现象联系，强调物理思维方法训练；在教学方法上开设讨论课，并且把课堂讲授和课堂讨论、课外阅读、学生小论文四者结合，它们都以教材为依托．     

Weak cosmic censorship conjecture in the nonlinear electrodynamics black hole under the charged scalar field

In this paper, we study the thermodynamics and the weak cosmic censorship conjecture of the nonlinear electrodynamics black hole under the scattering of a charged complex scalar field.According to the energy and charge fluxes of the scalar field, the variations of this black hole's energy and charge can be calculated during an infinitesimal time interval. With scalar field scattering, the variation of the black hole is calculated in the extended and normal phase spaces.In the normal phase space, the cosmological constant and the normalization parameter are fixed,and the first and second laws of thermodynamics can also be satisfied. In the extended phase space, the cosmological constant and the normalization parameter are considered as thermodynamic variables, and the first law of thermodynamics is valid, but the second law of thermodynamics is not valid. Furthermore, the weak cosmic censorship conjecture is both valid in the extended and normal phase spaces.     

电动力学课程思政建设的思考与实践

开展专业课程的思政建设是当今教育领域的一个重要的研究问题,本文结合物理学专业的电动力学课程进行课程思政建设的研究和实践,有机结合课程内容和特点,挖掘课程思政元素和切入点,通过教学实践初步取得教学效果,对理科专业课程思政建设起到积极的借鉴和推动作用,真正做到课程育人,发挥课程应有的作用,并提出总结和展望.     

On the Casimir effect without cutoff

The formulation of the Casimir effect without cutoffs is discussed. Our derivation emphasizes the decisive role of the free-space electromagnetic energy density. The zero point energy arises as an energy per unit volume, i.e., as local (in x space) energy density. It is given by the vaccum expectation value of the free-space Hamiltonian density in the Fock representation corresponding to the non-trivial geometry. The two Fock representations corresponding to the system with and without plates are proved to be inequivalent.     

One-step generation of qutrit entanglement via adiabatic passage in cavity quantum electrodynamics

A scheme is proposed for generating a three-dimensional entangled state for two atoms trapped in a cavity by one step via adiabatic passage. In the scheme, the two atoms are always in ground states and the field mode of the cavity excited is negligible under a certain condition. Therefore, the scheme is very robust against decoherence. Furthermore, it needs neither the exact control of all parameters nor the accurate control of the interaction time. It is shown that qutrit entanglement can be generated with a high fidelity.     

Magnetically charged regular black hole in a model of nonlinear electrodynamics

We obtain a magnetically charged regular black hole in general relativity. The source to the Einstein field equations is nonlinear electrodynamic field in a physically reasonable model of nonlinear electrodynamics (NED). “Physically” here means the NED model is constructed on the basis of three conditions: the Maxwell asymptotic in the weak electromagnetic field limit; the presence of vacuum birefringence phenomenon; and satisfying the weak energy condition (WEC). In addition, we analyze the thermodynamic properties of the regular black hole in two ways. According to the usual black hole thermodynamics, we calculate the heat capacity at constant charge, from which we know the smaller black hole is more stable. We also employ the horizon thermodynamics to discuss the thermodynamic quantities, especially the heat capacity at constant pressure.     

电磁波极化的应用

极化是电磁波的一个重要参量,是电动力学、电磁场与电磁波课程教学中的重点内容之一.系统介绍电磁波极化这一概念在通信、雷达和抗干扰等方面的应用,即利用电磁波极化实现无线电信号的最佳发射和接收,利用极化提高通信容量,探讨了电磁波极化在雷达目标识别、检测、成像以及抗干扰中的应用.