双缝干涉测量超声波声速

Min LUO,Ze-ru LUO,Guan-xia YU,Yang-fan LIN

Physics Experimentation（2018）

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Abstract

根据光学中杨氏双缝干涉实验原理设计出超声波双缝干涉测量声速的实验装置.运用波的干涉原理,将声波接收器接收到的干涉信号输入到示波器,通过示波器来显示干涉极大和干涉极小现象,利用分光计的双游标读数原理测量干涉极大和干涉极小对应的θ角.通过实验数据计算得出干涉极大和极小对应的声速分别为(336.2±0.3)m/s,(338.8±0.2)m/s.

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