超声波声速测量实验的拓展  

Expansion of the Ultrasonic Sound Velocity Measurement Experiment

作　　者：朱道云[1] 吴肖[1] 庞玮[1] 陈峻[1] 周誉昌[1] 

机构地区：[1]广东工业大学实验教学部,广州510006

出　　处：《实验科学与技术》2015年第1期15-16,共2页Experiment Science and Technology

基　　金：广东省高等教育学会实验室管理专业委员会基金项目(GDJ2012059);广东工业大学教育教学改革项目(2013ZY005);广东工业大学高教研究基金项目(2011YZ07)

摘　　要：在超声波声速测量实验的基础上,增加了学生利用示波器测量电压信号幅值及频率的学习。通过拓展内容的训练,加强了学生对示波器使用的练习,巩固了对谐振知识的理解及对信号衰减现象的观察,训练了学生利用软件作图的数据处理能力,丰富了大学物理实验的内容。The measurements of voltage amplitude and frequency by oscilloscope were appended to the ultrasonic sound velocity measurement experiment. By expanding the content of the training,oscilloscope exercises were strengthened,the understanding of resonant knowledge was consolidated and signal attenuation was observed. The ability of students to use the software mapping was also trained and the college physics experiment content was enriched.

关 键 词：超声波 示波器 电压 频率 

分 类 号：O426[理学—声学] G642[理学—物理]