利用波动图进行驻波的位相和能量特征分析  

An Analysis of Standing Wave’s Phase and Energy Characteristics by Means of Wave Patterns

作　　者：吴波英 王军延 付伯桥 彭晓星 陈杰 Wu Boying;Wang Junyan;Fu Boqiao;Peng Xiaoxing;Chen Jie(School of Physics and Electronic-information Engineering,Hubei Engineering University,Xiaogan,Hubei 432000,China;School of Chemistry and Material Science,Hubei Engineering University,Xiaogan,Hubei 432000,China;College of Technology,Hubei Engineering University,Xiaogan,Hubei 432000,China;School of Science,Hubei University of Automotive Technology,Shiyan,Hubei 442002,China)

机构地区：[1]湖北工程学院物理与电子信息工程学院,湖北孝感432000 [2]湖北工程学院化学与材料科学学院,湖北孝感432000 [3]湖北工程学院新技术学院,湖北孝感432000 [4]湖北汽车工业学院理学院,湖北十堰442002

出　　处：《湖北工程学院学报》2021年第3期36-39,共4页Journal of Hubei Engineering University

基　　金：湖北省教育厅科研项目(B2016085);湖北工程学院教学研究项目(2019034)。

摘　　要：对驻波的分析和认识是学生在物理学习中一个重要而颇具困难性的问题,虽然在教法上对此多有不同侧面的探究,但仍不能在课堂教学中很好地让学生理解和接受。本文利用驻波表达式的振幅因子和简谐振动因子相乘的方法绘制出不同时刻的驻波波动图,并以此为基础分析驻波的位相和能量特征。这种方法不仅物理概念清晰、物理图景清楚,而且操作简单,学生容易掌握,对理解驻波的特征大有帮助。The analysis and perception of standing waves is important and quite difficult for students in physics learning.Students fail to fully perceive standing waves,though many different teaching methods are tried in classroom teaching.In this paper,the method of multiplying the amplitude factor and the harmonic vibration factor of the standing wave expression is used to draw the standing wave diagrams at different time,based on which the phase and energy characteristics of the standing waves are analyzed.Not only are the physical concept and the physical picture clear,the method is also easy to master and easy to operate,which turns out to be conductive for students to well perceive the characteristics of standing waves.

关 键 词：驻波 波动图 振幅因子 简谐振动因子 位相和能量特征 

分 类 号：G642.0[文化科学—高等教育学]