Doppler effect in the ripple tank: further experiments with a moving source
IF 0.6
4区 教育学
Q4 EDUCATION, SCIENTIFIC DISCIPLINES
引用次数: 0
Abstract
Abstract In this paper we extend some recent works about Doppler effect in surface waves on water. We improve the experimental set up exploring several situations: source in motion with constant velocity and receiver at rest, source at rest and receiver in motion with constant velocity, as well as both source and receiver in motion. Thereby we produce fractional frequency changes of the order of 40-50%, far larger than those obtained by more traditional sound experiments. The experimental set-up, the data collection and the data analysis also allow to highlight some aspects relevant from a didactic point of view, in particular the experimental results clearly show the nonlinearity of the Doppler shift with the moving source velocity.
波纹槽中的多普勒效应:移动源的进一步实验
摘要本文对近年来有关水表面波多普勒效应的一些研究成果进行了推广。我们改进了实验装置，探索了几种情况:源匀速运动而接收器静止，源静止而接收器匀速运动，以及源和接收器都运动。因此，我们产生了40-50%量级的分数频率变化，远远大于传统声音实验所获得的变化。实验设置、数据收集和数据分析也可以从教学的角度突出一些相关方面，特别是实验结果清楚地显示了多普勒频移与移动源速度的非线性关系。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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来源期刊
European Journal of Physics
物理-物理：综合
CiteScore
1.70
自引率
28.60%
发文量
128
审稿时长
3-8 weeks
期刊介绍：
European Journal of Physics is a journal of the European Physical Society and its primary mission is to assist in maintaining and improving the standard of taught physics in universities and other institutes of higher education.
Authors submitting articles must indicate the usefulness of their material to physics education and make clear the level of readership (undergraduate or graduate) for which the article is intended. Submissions that omit this information or which, in the publisher''s opinion, do not contribute to the above mission will not be considered for publication.
To this end, we welcome articles that provide original insights and aim to enhance learning in one or more areas of physics. They should normally include at least one of the following:
Explanations of how contemporary research can inform the understanding of physics at university level: for example, a survey of a research field at a level accessible to students, explaining how it illustrates some general principles.
Original insights into the derivation of results. These should be of some general interest, consisting of more than corrections to textbooks.
Descriptions of novel laboratory exercises illustrating new techniques of general interest. Those based on relatively inexpensive equipment are especially welcome.
Articles of a scholarly or reflective nature that are aimed to be of interest to, and at a level appropriate for, physics students or recent graduates.
Descriptions of successful and original student projects, experimental, theoretical or computational.
Discussions of the history, philosophy and epistemology of physics, at a level accessible to physics students and teachers.
Reports of new developments in physics curricula and the techniques for teaching physics.
Physics Education Research reports: articles that provide original experimental and/or theoretical research contributions that directly relate to the teaching and learning of university-level physics.
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