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All Journal Jurnal Teori dan Aplikasi Fisika JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Rahma Alliya Aqquilla
Universitas Pendidikan Indonesia
Astronomy Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Designing A Doppler Effect Experiment Using Smartphone Sound Sensor Asep Akmal Fadia Nurhalim; Rahma Alliya Aqquilla; Najmi Hiyan Fathinah; Rizki Zakwandi; Alfiansah Sandian Prakoso; Ika Mustika Sari
Jurnal Teori dan Aplikasi Fisika Vol. 13 No. 02 (2025): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v13i02.511

Abstract

This study explores the design of a Doppler effect experiment using a sound sensor on a smartphone. The main objective is to demonstrate that the change in sound frequency due to the relative motion between the source and the observer can be observed and measured using an easily accessible experimental setup. The experiment was conducted using a smartphone equipped with a sound sensor application to record frequency shifts from a moving sound source. The setup consists of a sound emitter with a constant frequency and either a moving observer or a moving source, making it easy to implement in educational settings. The results indicate that this experiment can effectively detect frequency changes. Data analysis shows an error rate ranging from 3.69% to 3.92%, proving that this method is sufficiently accurate for studying the Doppler effect. These findings highlight that integrating mobile technology into scientific experiments can be a valuable tool for educators, particularly in explaining wave phenomena such as the Doppler effect. Keywords: Doppler Effect, Physics Experiments, Educational Technology
Designing a Restitution Experiment Using Smartphone Sound Sensor Najmi Hiyan Fathinah; Asep Akmal Fadia Nurhalim; Rahma Alliya Aqquilla; Ika Mustika Sari; Alfiansyah Sandion Prakoso; Rizki Zakwandi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 9 No. 1 (2025): May Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v9i1.4409

Abstract

This study explores the efficiency level of two experimental methods for determining the coefficient of restitution, which have been widely conducted in previous research. Using smartphones as tools in physics experiments, the coefficient of restitution can be determined through visual analysis (camera) and sound sensors to detect collisions. Phyphox is used to record time intervals and the height of the ball after impact based on the sound of the collision with the floor. Additionally, Tracker is employed for visual motion analysis of the object during the collision. The coefficient of restitution calculated using Phyphox yielded a value of 0.894 ± 0.017, while Tracker provided a value of 0.888 ± 0.014. The results indicate by reviewing the percentage error between the two methods (0.715%), Phyphox and Tracker can provide accurate data for determining the coefficient of restitution, making them effective and efficient physics experiment-based learning tools in schools.
Evaluating the Accuracy of Smartphone Light Sensors in a Uniformly Accelerated Motion Experiment Rahma Alliya Aqquilla; Najmi Hiyan Fathinah; Asep Akmal Fadia Nurhalim; Ika Mustika Sari; Alfiansah Sandion Prakoso; Rizki Zakwandi
Jurnal Teori dan Aplikasi Fisika Vol. 14 No. 02 (2026): Jurnal Teori dan Aplikasi Fisika
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v14i02.623

Abstract

This study aims to design and implement a motion experiment using a smartphone’s light sensor, powered by the Phyphox application, to investigate uniformly accelerated linear motion. A dynamic cart equipped with a smartphone was released along a rail inclined at 1°, with an LED strip serving as the light source. The smartphone's light sensor recorded variations in light intensity as the cart moved, allowing for the determination of acceleration over time. Data analysis focused on the relationship between acceleration and motion, demonstrating consistent acceleration values ranging from 0.127 m/s² to 0.128 m/s² across multiple trials. The LED setup was adjusted to optimize data collection, ensuring the reliability of measurements. These results confirm the theoretical principles of uniformly accelerated motion and highlight the effectiveness of smartphone-based sensors for experimental and educational applications. Despite a percentage error of approximately 25% when compared to theoretical calculations, the small standard deviation value of 0.000242 indicates a high level of precision and repeatability in the experimental results. This suggests that the experiment, although not perfectly accurate, can still serve as a reliable instructional tool in physics classrooms. The experimental design is not only low-cost and portable but also adaptable to different learning environments, making it a suitable alternative when conventional lab tools are unavailable. Future research could explore alternative sensor configurations or extended applications in physics education. Additionally, improvements in the light sensor’s sensitivity, optimizing the distance between light sources, and using more mobile supporting structures are recommended to increase data accuracy and ease of implementation in physics experiments for students studying linear motion.     Keywords: inclined plane; light sensor; linear motion; lux meter; phyphox.
Co-Authors Alfiansah Sandian Prakoso Alfiansah Sandion Prakoso Alfiansyah Sandion Prakoso Asep Akmal Fadia Nurhalim Asep Akmal Fadia Nurhalim Ika Mustika Sari Ika Mustika Sari Najmi Hiyan Fathinah Najmi Hiyan Fathinah Zakwandi, Rizki