大学物理 ›› 2020, Vol. 39 ›› Issue (8): 7-10.doi: 10.16854 /j.cnki.1000-0712.190482

• 教学讨论 • 上一篇    下一篇

大学物理中关于驻波教学的一些体会

秦吉红,邱红梅,梁颖   

  1. 1. 北京科技大学数理学院物理系,北京100083; 2. 北京科技大学数理学院应用物理系,北京100083; 3. 北京师范大学物理学系,北京100875
  • 收稿日期:2019-10-28 修回日期:2020-01-13 出版日期:2020-08-20 发布日期:2020-09-02
  • 作者简介:秦吉红( 1979—) ,女,山西翼城人,北京科技大学物理系副教授,博士,主要从事大学物理教学和凝聚态物理研究工作
  • 基金资助:
    北京科技大学本科教育教学改革与研究项目( JG2017M36 和JG2017M35) 资助

Some experiences on the teaching of standing waves in college physics

QIN Ji-hong1,QIU Hong-mei2,LIANG Ying3   

  1. 1. Department of Physics,School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083, China; 2. Department of Applied Physics,School of Mathematics and Physics,University of Science and Technology Beijing, Beijing 100083,China; 3. Department of Physics,Beijing Normal University,Beijing 100875,China
  • Received:2019-10-28 Revised:2020-01-13 Online:2020-08-20 Published:2020-09-02

摘要: 驻波一直是大学物理课程讲授的重点和难点之一. 本文通过具体的推理,说明了驻波中“驻”的三层含义: 没有波形的定向传播,没有相位的传播,以及没有能量的定向传播. 同时总结了在讲授驻波过程中用到的一些具体案例. 通过推理和案例教学,加深学生对驻波理论和物理图像的理解,提升学生利用课堂知识解决实际问题的兴趣和能力.

关键词: 驻波, 大学物理, 案例

Abstract: Standing wave has always been one of the key and difficult topics in the teaching of college physics.

Through detailed derivation,three meanings to understand the " standing" in standing waves are given: one is the

directional propagation without waveform,the second is no phase propagation,and the third is the directional propagation

without energy. At the same time,some specific cases are summarized in the process of teaching standing

waves. Through reasoning and case teaching,it is easier for students to understand the theory and physical image of

standing waves,and students' interest and ability in using classroom knowledge to solve practical problems are also

enhanced.

Key words: standing wave, college physics, specific cases