Doppler effect in the ripple tank: further experiments with a moving source

In this paper, we extend some recent works about the Doppler effect in surface waves on water. We improve the experimental set up by 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 bo...

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Bibliographic Details
Published in:European journal of physics 2024-01, Vol.45 (1), p.15702
Main Authors: D’Anna, Michele, Corridoni, Tommaso, Sposetti, Stefano, Corni, Federico
Format: Article
Language:English
Subjects:
Doppler effect
experiment-based learning
frequency shift
renewal of classroom and lab experiments
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Summary:In this paper, we extend some recent works about the Doppler effect in surface waves on water. We improve the experimental set up by 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 Δ f / f 0 of the order of 40%–50%, far larger than those obtained by more traditional sound experiments. The experimental setup, 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.
ISSN:0143-0807
1361-6404
DOI:10.1088/1361-6404/ad0aa2