| 利用智能手机居家测量声速和重力加速度 |
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| 引用本文： | 苗红梅,杨智敏.利用智能手机居家测量声速和重力加速度[J].大学物理,2021,40(1):27-32. |
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| 作者姓名： | 苗红梅 杨智敏 |
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| 作者单位： | 延安大学物理与电子信息学院,陕西延安 716000;延安大学物理与电子信息学院,陕西延安 716000 |
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| 基金项目： | 陕西省教育厅科研项目(17JK0860);延安大学博士科研启动项目(YDBK2019-54);延安市科技专项经费资助 |
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| 摘 要： | 利用两部智能手机,借助手机软件phyphox在家进行了多普勒效应实验.两部手机分别作为接收器和声源,让接收器和声源分别做自由落体运动,测得了接收频率和运动速度随时间的变化曲线,通过对数据的处理得到了声速和重力加速度值,并和理论值进行了对比,验证了用手机进行多普勒效应实验的可靠性,为以后实验的进行以及数据处理提供了参考.
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| 关 键 词： | 智能手机 phyphox 多普勒效应 声速 重力加速度 |
Measuring gravitational acceleration and speed of sound by smartphones at home |
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| MIAO Hong-mei,YANG Zhi-min.Measuring gravitational acceleration and speed of sound by smartphones at home[J].College Physics,2021,40(1):27-32. |
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| Authors: | MIAO Hong-mei YANG Zhi-min |
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| Institution: | (School of Physics and Electronic Information,Yan’an University,Yan’an,Shaanxi 716000,China) |
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| Abstract: | The experiment of Doppler effect is conducted with phyphox at home by employing two smartphones which acted as the sound source and the receiver,respectively.The sound source or the receiver fell freely so that the frequency and the velocity versus times can be obtained.The gravitational acceleration and the speed of sound can be calculated through data processing.Furthermore,the measured and theoretical values are compared.The reliability of Doppler effect experiment with smartphones is verified,and the results will provide some guidance for future experiments and data processing. |
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| Keywords: | smartphones phyphox Doppler effect speed of sound gravitational acceleration |
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