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Analysis of Interference Patterns Using a Simplified Ripple Tank, a Smartphone Camera and Tracker

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Title: Analysis of Interference Patterns Using a Simplified Ripple Tank, a Smartphone Camera and Tracker
Language: English
Authors: Thy, Savrin (ORCID 0000-0002-5826-5170), Iwayama, Tsutomu (ORCID 0000-0001-7835-4042)
Source: Physics Education. Nov 2021 56(6).
Availability: IOP Publishing. 190 North Independence Mall West Suite 601, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: ped@ioppublishing.org; Web site: https://iopscience.iop.org/journal/0031-9120
Peer Reviewed: Y
Page Count: 12
Publication Date: 2021
Document Type: Journal Articles
Reports - Research
Education Level: Secondary Education
Higher Education
Postsecondary Education
Descriptors: Science Instruction, Physics, Scientific Concepts, Science Experiments, Laboratory Equipment, Handheld Devices, Telecommunications, Video Technology, Measurement, Error Patterns, Prediction, Water, Concept Formation, Secondary School Science, College Science
DOI: 10.1088/1361-6552/ac20a9
ISSN: 0031-9120
Abstract: This paper presents a thorough method for studying the interference of water waves. The study aimed: (a) to demonstrate the interaction of two coherent waves, which creates interference patterns, and (b) to analyse the interference patterns. Three main tools were employed: a simplified ripple tank to experiment, a smartphone camera to record the experiment, and Tracker to quantify the experiment video. The quantification was designed to investigate experimental measurement, asymptotic approximation and linear approximation of the interference patterns. The results showed that the demonstration was impressive in that the interference patterns were appealingly depicted in the video recording. The quantification was highly accurate, with an error of about 3%. The investigation indicated that the measured values agreed with the asymptotic prediction throughout the entire range, with errors of about 3%. Errors between the measured values and linear approximation dramatically increased from the fourth pattern. The findings caution teaching and learning against using the linear approximation for predicting interference patterns of water waves. In conclusion, this study exposes implications for teaching and learning interference phenomena comprehensively.
Abstractor: As Provided
Entry Date: 2022
Accession Number: EJ1320844
Database: ERIC
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  Data: Analysis of Interference Patterns Using a Simplified Ripple Tank, a Smartphone Camera and Tracker
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  Data: IOP Publishing. 190 North Independence Mall West Suite 601, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: ped@ioppublishing.org; Web site: https://iopscience.iop.org/journal/0031-9120
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  Data: 0031-9120
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  Data: This paper presents a thorough method for studying the interference of water waves. The study aimed: (a) to demonstrate the interaction of two coherent waves, which creates interference patterns, and (b) to analyse the interference patterns. Three main tools were employed: a simplified ripple tank to experiment, a smartphone camera to record the experiment, and Tracker to quantify the experiment video. The quantification was designed to investigate experimental measurement, asymptotic approximation and linear approximation of the interference patterns. The results showed that the demonstration was impressive in that the interference patterns were appealingly depicted in the video recording. The quantification was highly accurate, with an error of about 3%. The investigation indicated that the measured values agreed with the asymptotic prediction throughout the entire range, with errors of about 3%. Errors between the measured values and linear approximation dramatically increased from the fourth pattern. The findings caution teaching and learning against using the linear approximation for predicting interference patterns of water waves. In conclusion, this study exposes implications for teaching and learning interference phenomena comprehensively.
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