本文介绍了一种利用普通的两端开口奶茶管的声驻波现象来测量声速的方法，只需两部普通智能手机和一根两端开口奶茶管即可进行实验。这种实验方法所用的实验仪器随手可得，无需学生再到学校的实验室进行实验，激发了学生的学习兴趣，增强了学生的动手能力。%[Abstract]This paper introduces a method to measure the sound speed by using the standing wave in the common milk tea tube that Opened at both ends. Just two smart phones and a tube are used in the experiment. For these instruments are readily available, we needn't to go to the school laboratory. This inspires the students'learning interest and enhances their practical ability.
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