| 超声声速测定实验中几个问题的研究 |
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| 引用本文： | 李恩普.超声声速测定实验中几个问题的研究[J].物理与工程,1999(2). |
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| 作者姓名： | 李恩普 |
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| 作者单位： | 西北工业大学应用物理系 |
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| 摘 要： | 本文研究了超声声速测定实验中声波振幅的衰减规律．实验结果表明声源发出的是球面波．同时，还介绍了用双踪示波器的多种功能测量超声波长的基本方法
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| 关 键 词： | 超声声速 驻波 衰减 球面波 |
THE STUDY OF SOME QUESTIONS IN THE EXPERIMENT FOR MEASURING ULTRASONIC SOUND VELOCITY |
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| Li Enpu.THE STUDY OF SOME QUESTIONS IN THE EXPERIMENT FOR MEASURING ULTRASONIC SOUND VELOCITY[J].Physics and Engineering,1999(2). |
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| Authors: | Li Enpu |
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| Abstract: | As reported in this paper,the attenuation law of sound wave amplitude is studied in the experiment for measuring sound velocity.The experimental result shows that the sound source sends out spherical sound wave.Besides,several methods,in which the wave length is measured by using different functions of a dual trace oscilloscope,are introduced. |
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| Keywords: | ultrosonic sound velocity stationary wave attenuation spherical sound wave |
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