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运动电场具有磁场特性电场与磁场的关系(2)(英文)
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作者 陈有君 《内蒙古农业大学学报(自然科学版)》 CAS 2002年第1期91-97,共7页
Biot- Savart定律是经典电磁学中关于电流的磁场的基本定律 ,以它为基础 ,并结合分析经典电磁学中关于磁与电关系的理论 ,推导出了磁场与电场联系的规律 ,即 :运动电场具有磁场特性。磁感应强度与电场强度之间具有如下关系 :B=1C2 (VE&#... Biot- Savart定律是经典电磁学中关于电流的磁场的基本定律 ,以它为基础 ,并结合分析经典电磁学中关于磁与电关系的理论 ,推导出了磁场与电场联系的规律 ,即 :运动电场具有磁场特性。磁感应强度与电场强度之间具有如下关系 :B=1C2 (VE× E)电流的磁场是电流周围运动电场的特性 ,在传导电流的周围 ,由于正负电荷的电场强度相等 ,方向相反而抵消 ,所以没有明显的电场 ,但是随电荷运动的电场潜流 ,相反方向的电场的运动方向相反 ,因此向量 VE× E却是不平衡的 ,这个向量就是传导电流的磁场。即电流只是磁场的表面的源 ,磁场的源是运动的电场或运动的电荷。磁场与电场及运动速度之间是互相垂直的三维向量。电场的时变也是由于运动造成的 ,所以时变电场引起的磁场也是由电场的运动造成的。时变电场产生磁场不是电磁现象的一般规律。 展开更多
关键词 磁场特性 电场 磁场 运动电场 磁感应强度 电场强度
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以“情境演进”为主线,实现思维进阶发展——以“带电粒子在电场中的运动”复习课为例
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作者 牛振华 曹会 《中学教学参考》 2024年第20期38-40,共3页
文章依托“四主”教学模式,以“带电粒子在电场中的运动”复习课为例,探讨如何以“情境演进”为主线,搭建学生思维进阶发展的台阶,设计出能促进学生思维发展和素养提升的高中物理教学。
关键词 情境演进 思维进阶发展 带电粒子在电场中的运动
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带电水滴在电场中的运动
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作者 郑惠情 《物理实验(中学部分)》 北大核心 2004年第4期48-48,共1页
由于带电微粒(包括电子、正离子、负离子等)是人们肉眼看不到的微观粒子,因此人们要直观地显现带电微粒在电场中受力而使运动径迹变化的现象,就显得相当困难,人们只能凭理论推导或比较先进的实验仪器设备来定量计算或显示上述粒子的... 由于带电微粒(包括电子、正离子、负离子等)是人们肉眼看不到的微观粒子,因此人们要直观地显现带电微粒在电场中受力而使运动径迹变化的现象,就显得相当困难,人们只能凭理论推导或比较先进的实验仪器设备来定量计算或显示上述粒子的径迹。 展开更多
关键词 中等教育 物理实验 带电水滴 电场运动 实验设计 电场
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应用类比法引导学生由学会到会学的教学设计——以“带电粒子在电场中的运动”为例
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作者 胡蓉 徐晓梅 王俊 《物理通报》 2015年第S2期61-64,共4页
采用类比法,通过将带电粒子在电场中的运动与匀变速直线运动、平抛运动进行类比,介绍带电粒子在电场中的运动,意在帮助学生很容易地构建起新的认知结构,同时也让学生学到利用事物的某些已知属性去探究未知事物的方法,使"知识线&qu... 采用类比法,通过将带电粒子在电场中的运动与匀变速直线运动、平抛运动进行类比,介绍带电粒子在电场中的运动,意在帮助学生很容易地构建起新的认知结构,同时也让学生学到利用事物的某些已知属性去探究未知事物的方法,使"知识线"和"方法线"在教学中并行前进、同时展开. 展开更多
关键词 类比法 学会 会学 带电粒子在电场中的运动
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“带电粒子在匀强电场中的运动”教学案例
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作者 张跃林 《云南教育》 2005年第35期34-35,共2页
关键词 “带电粒子在匀强电场中的运动 教学案例 中学 物理教学 学习方式 教学手段
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STEM视域下的高中物理大单元教学——以“带电粒子在电场中的运动”为例
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作者 邝素馨 《中学物理教学参考》 2024年第2期33-35,共3页
以"带电粒子在电场中的运动"为例,在STEM理念的指导下,研读课标、整合教材、设置任务,完成高中物理大单元教学的设计与实施,落实物理学科的育人功能.
关键词 STEM 带电粒子在电场中的运动 大单元教学
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静电场复习之策略
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作者 程佳琦 《神州》 2019年第2期66-67,共2页
通过对静电场知识点分析、归纳、总结,做到熟练掌握,运用多变,提高应变能力,从而达到高考超常发挥。
关键词 电荷 电荷守恒定律 力的性质 能的性质 电容器 带电粒子在电场中的运动
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5E教学法在物理概念教学中的应用——以"带电粒子在电场中运动"为例 被引量:1
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作者 刘平平 韩海生 裴魏魏 《中学物理教学参考》 2023年第18期1-4,共4页
以"带电粒子在电场中运动"为例说明5E教学法在高中物理概念教学中的应用.利用探究让学生参与物理概念的发现过程,培养学生发现问题、解决问题的能力;帮助学生在探究与解释过程中理解概念、规律,建立新知识与旧知识之间的关联... 以"带电粒子在电场中运动"为例说明5E教学法在高中物理概念教学中的应用.利用探究让学生参与物理概念的发现过程,培养学生发现问题、解决问题的能力;帮助学生在探究与解释过程中理解概念、规律,建立新知识与旧知识之间的关联与迁移,发展和完善学生的认知结构,变接受学习为发现学习与有意义学习,变"要我学"为"我要学";在探究与迁移过程中掌握概念和规律,实现认知过程的两次飞跃,培养学生学以致用、举一反三的能力和习惯. 展开更多
关键词 5E教学法 概念教学 带电粒子在电场中的运动
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Movement of dispersed droplets of W/O emulsion in a uniform DC electrostatic field: Simulation on droplet coalescence 被引量:5
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作者 张军 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第9期1453-1459,共7页
Considering the droplet coalescence, the motion of a group of dispersed droplets in W/O emulsion in a DC electric field is simulated. The simulation demonstrates the evolutions of droplet number, size as well as its d... Considering the droplet coalescence, the motion of a group of dispersed droplets in W/O emulsion in a DC electric field is simulated. The simulation demonstrates the evolutions of droplet number, size as well as its distribution,local concentration distribution and droplet size-velocity relation with the applied time of electric field. The simulated average droplet size is roughly consistent with the experimental value. The simulated variation of droplet number with time under several applied voltages shows that increasing voltage is more effective for raising the rate of droplet coalescence than extending exerting time. However, with the further raise of applied voltage, the improvement in droplet coalescence rate becomes less significant. The evolution of simulated droplet size–velocity relationship with time shows that the inter-droplet electric repulsion force is very strong due to larger electric charge on the droplet under higher applied voltage, so that the magnitude and the direction of droplet velocity become more random, which looks helpful to droplet coalescence. 展开更多
关键词 DC electrostatic dehydration Droplet coalescence Droplet dynamics Simulation
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Motion Performance and Mooring System of a Floating Offshore Wind Turbine 被引量:5
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作者 Jing Zhao Liang Zhang Haitao Wu 《Journal of Marine Science and Application》 2012年第3期328-334,共7页
The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures. However, countries with limited shallow water areas require innovative floating platfo... The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures. However, countries with limited shallow water areas require innovative floating platforms to deploy wind turbines offshore in order to harness wind energy to generate electricity in deep seas. The performances of motion and mooring system dynamics are vital to designing a cost effective and durable floating platform. This paper describes a numerical model to simulate dynamic behavior of a new semi-submersible type floating offshore wind turbine (FOWT) system. The wind turbine was modeled as a wind block with a certain thrust coefficient, and the hydrodynamics and mooting system dynamics of the platform were calculated by SESAM soRware. The effect of change in environmental conditions on the dynamic response of the system under wave and wind loading was examined. The results indicate that the semi-submersible concept has excellent performance and SESAM could be an effective tool for floating wind turbine design and analysis. 展开更多
关键词 floating offshore wind turbine semi-submersible platform platform motion mooring dynamics mooring system
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Predicting the Dielectric Strength of c-C_4F_8 and SF_6 Gas Mixtures by Monte Carlo Method 被引量:3
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作者 吴变桃 肖登明 《Journal of Shanghai Jiaotong university(Science)》 EI 2007年第1期121-124,共4页
An improved Monte Carlo method was used to simulate the motion of electrons in c-C4F8 and SF6 gas mixtures for pulsed townsend discharge. The electron swarm parameters such as effective ionization coefficient, -↑α a... An improved Monte Carlo method was used to simulate the motion of electrons in c-C4F8 and SF6 gas mixtures for pulsed townsend discharge. The electron swarm parameters such as effective ionization coefficient, -↑α and drift velocity over the E/N range from 280~700 Td(1Td=10^-21 V·m^2) were calculated by employing a set of cross sections available in literature. From the variation cure of -↑α with SF6 partial pressure p, the limiting field (E/N)lim of gas mixture at different gas content was determined. It is found that the limiting field of c-C4F8 and SF6 gas mixture is higher than that of pure SF6 at any SF6 mixture ratio. Simulation results show excellent agreement with experiment data available in previous literature. 展开更多
关键词 c-C4F8 and SF6 gas mixture Monte Carlo limiting field dielectric strength
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基于学习进阶的高中物理教学设计——以“带电粒子在电场中的运动”的教学为例 被引量:2
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作者 王鹏 《物理之友》 2019年第7期34-36,共3页
在学生原有概念的基础上,遵循学生的认知规律,将"带电粒子在电场中的运动"的学习过程进行细化,逐层进阶、层层递进,最终在教师的引导下使学生熟练掌握"带电粒子在电场中的运动"的分析方法。
关键词 学习进阶 带电粒子在电场中的运动 教学设计
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Research on hydrokinetics characteristics of rotating pipe fluid in the crossed electric and magnetic field
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作者 郭斌 张鹏 程树康 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2007年第1期5-8,共4页
The rotating pipe fluid in the crossed electric and magnetic field not only suffered the forces in the steady condition, but also suffered Coriolis force, centrifugal force because of rotation and electromagnetic volu... The rotating pipe fluid in the crossed electric and magnetic field not only suffered the forces in the steady condition, but also suffered Coriolis force, centrifugal force because of rotation and electromagnetic volume force. The motion equation of fluid and the hydrokinetics equations of rotating pipe were described in the Cartesians coordinates. The equations showed that the solutions to hydrokinetics equations of rotating pipe in the crossed electric and magnetic electromagnetic field were highly complicated and numerical calculations were also astronomical. The pressure distribution and temperature distribution of one dimension were solved using the electromagnetic equations set. The results showed that the fluid in rotating pipe was in the asymmetrical pressure field and temperature field because it was in the energy exchange and thermo-electrical coupling course. The primary characteristic of flow course could be expressed using the proposed hydrokinetics equations. 展开更多
关键词 crossed electric and magnetic electromagnetic fields rotating pipe hydrokinetics flow equations
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Magnetic and Relativistic Effects in Uranium Catalysts and the Movement of Charged Particles under the Effect of Electric and Magnetic Fields
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作者 Aibassov Erkin Zhakenovich Yemelyanova Valentina Stepanovna Shakieva Tatyana Vladimirovna Tussupbaev Nesipbay Kuandykovich Imanbaev Klysh Bulenbayev Maxat Zhumabaevich 《Journal of Chemistry and Chemical Engineering》 2014年第10期996-1000,共5页
We first received and examined X-ray spectroscopy of uranium catalyst. We studied magnetic and relativistic effects in uranium catalysts, and the movement of charged particles under the effect of a uniform electric fi... We first received and examined X-ray spectroscopy of uranium catalyst. We studied magnetic and relativistic effects in uranium catalysts, and the movement of charged particles under the effect of a uniform electric field and uniform magnetic field. We proposed the mechanism of the motion of charged particles under the influence of a uniform electric field and a uniform magnetic field. 展开更多
关键词 Preparation of uranium catalyst X-ray spectroscopy nanoparticles.
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学习进阶理论下的情境教学课堂建构——以“带电粒子在电场中的运动”教学为例
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作者 黄佳 《物理之友》 2021年第12期40-43,共4页
以学习进阶理论为指导,开展情境教学,通过"情境化""去情境化""再情境化"三个环节,重塑符合学生认知发展水平的思维链和探究链,以情境化的感性认识唤醒学生原有认知,以去情境化的学习进阶问题链发展学生... 以学习进阶理论为指导,开展情境教学,通过"情境化""去情境化""再情境化"三个环节,重塑符合学生认知发展水平的思维链和探究链,以情境化的感性认识唤醒学生原有认知,以去情境化的学习进阶问题链发展学生科学思维能力和科学探究能力,以再情境化提升学生的学习迁移能力和解决新问题的能力,提升学生的核心素养。 展开更多
关键词 学习进阶 情境教学 核心素养 带电粒子在电场中的运动
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Exact Solution of Klein-Gordon Equation for Charged Particle in Magnetic Field with Shape Invariant Method
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作者 M.R. Setare O. Hatami 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第6期1000-1002,共3页
Based on the shape invariance property we obtain exact solutions of the three-dimensional relativistic Klein Gordon equation for a charged particle moving in the presence of a certain varying magnetic field, and we al... Based on the shape invariance property we obtain exact solutions of the three-dimensional relativistic Klein Gordon equation for a charged particle moving in the presence of a certain varying magnetic field, and we also show its non-relativistic limit. 展开更多
关键词 Klein Gordon equation shape invariance supersymmetric quantum mechanics exact solutions magnetic field
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问题式教学在物理课堂中的应用——以“带电粒子在电场中的运动”为例
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作者 陈烨鑫 《湖南中学物理》 2017年第8期36-38,共3页
基于问题的教学是一种有效的教学方法,教师围绕一个课题设计问题,让学生在寻求探索解决问题的思维活动中,掌握知识、培养技能,进而促使学生物理思维的形成、发展、提升,这也契合高中物理的核心素养中形成良好科学思维的要求。
关键词 问题式教学 带电粒子在电场中的运动 科学思维的培养
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Particle charging characteristics with the low-speed mixed fluid under high electric field
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作者 HE Bo LI YaDong +2 位作者 MA DongDong GU Ran LIN Mei 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第9期1689-1695,共7页
Air pollution caused by particles with small size has been a global concern because of threats to human health.A feasible way to remove these super fine suspended particles is using electrostatic precipitation technol... Air pollution caused by particles with small size has been a global concern because of threats to human health.A feasible way to remove these super fine suspended particles is using electrostatic precipitation technology.Herein,the PIV was used to measure the particle velocity distribution.By analyzing the particle motion trend in high electric field,a process of particle charging loss was observed.This phenomenon cannot be explained by current particle charging theories.Our conclusions may improve the understanding of particle charging processes. 展开更多
关键词 particle charging super fine particles PIV electric field flow field
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Solar wind electrons reflected by lunar electric and magnetic fields 被引量:2
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作者 FENG YongYong ZHANG YiTeng +1 位作者 ZHAO Hua LIU ZhenXing 《Science China Earth Sciences》 SCIE EI CAS 2011年第11期1796-1800,共5页
In this paper,we report on our study of the trajectories of solar wind electrons reflected by lunar electric and magnetic fields through analysis of reflectivity and distribution under different conditions.Our calcula... In this paper,we report on our study of the trajectories of solar wind electrons reflected by lunar electric and magnetic fields through analysis of reflectivity and distribution under different conditions.Our calculations and simulations showed that the variations of both the magnetic field and surface potential play important roles in changing the directions of the traces of electrons.Furthermore,we were able to distinguish the changes resulting from these two variations through further analysis of the results.Thus,both the magnitude of the crustal field and the surface potential can be acquired from the data of satellites such as the Lunar Prospector.These findings could also contribute to the design and development of new devices in future lunar programs. 展开更多
关键词 surface potential solar wind electron remote sensing
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Investigations on Several Mechanical Problems in Windblown Sand Movement
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作者 Zheng Xiaojing 《Science Foundation in China》 CAS 2007年第1期29-33,共5页
It is very necessary for the investigation on mechanism of windblown sand movement to under- stand and find out effective measures of preventing and reducing danger of windblown sands,which al- so deals with some gene... It is very necessary for the investigation on mechanism of windblown sand movement to under- stand and find out effective measures of preventing and reducing danger of windblown sands,which al- so deals with some general characters and hot spots in the scientific forelands,such as multi-scale prob- lems,interactions among multi-physical-fields,ran- domness and nonlinearity as well as complex sys- tems.In recent years,a series of experiments in wind tunnels and theoretical modeling as well as computer simulation have been undertaken in the re- search group of environmental mechanics on wind- blown sand movement in Lanzhou University with the point of mechanical and geography intersecting view.Some original and essential progress has been achieved, which includes that the main regu- larities of charges on sand particles and the electric field in windblown sand flux and the effect of the electric field on the flux and the microwave propaga- tion are revealed,and the evolution process of windblown sand flux under the mutual couple inter- actions among several physical fields are predicted as well as the main features of Aeolian sand ripples are simulated. 展开更多
关键词 windblown sand flux windblown sand electric field sand transport rate Aeolian sand rippies probability distribution of lift-off velocity
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