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Development of a Liquid Density Measurement Device Based on the Integration of Fluid Pressure and Spring Elasticity as an Alternative Physics Demonstration Tool Himawan Putranta
Papua Journal of Physics Education Vol 6 No 1 (2026): Papua Journal of Physics Education (PJPE)
Publisher : Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/pjpe.v6i1.5366

Abstract

Physics learning in schools requires the availability of adequate measuring instruments to enable students to conduct empirical observations and connect theoretical concepts with real-world phenomena. One of the essential instruments in fluid mechanics instruction is a device for measuring fluid density. However, limitations in laboratory facilities often result in the unavailability of such instruments, thereby reducing the effectiveness of practical learning activities. This study aims to develop a simple, low-cost, and easily replicable liquid density measurement device by integrating the principles of fluid pressure and spring elasticity as its measurement mechanism. This research employed a development methodology consisting of three main stages: (1) the design phase, which focused on determining the working principles and selecting components that could be constructed using readily accessible materials; (2) the development phase, involving the fabrication of a prototype using simple materials; and (3) the testing phase, conducted to evaluate the accuracy and consistency of the measurement results. Water was selected as the test fluid because its standard density value is widely recognized as a reference. The resulting prototype operates by converting changes in hydrostatic pressure into spring displacement, which is subsequently calibrated to obtain the corresponding density value. Experimental evaluation demonstrated that the device produced a density measurement of 0.95 g/cm³ with an error margin of 0.05 g/cm³ relative to the reference value, indicating that the instrument is sufficiently accurate for instructional purposes. Overall, this development provides a practical contribution to physics education by offering an affordable and functional alternative laboratory instrument with strong potential to enhance students’ experimental activities and deepen their understanding of fluid mechanics concepts.
Visualization of 2D and 3D sine waves using spyder as a medium for teaching physics programming Arum Nabila, Atika; Putranta, Himawan
Edulab : Majalah Ilmiah Laboratorium Pendidikan Vol. 11 No. 1 (2026)
Publisher : Laboratorium Pendidikan Fakultas Ilmu Tarbiyah dan Keguruan Colaboration with Persatuan Pranata Laboratorium Pendidikan Indonesia Tingkat Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/edulab.2026.111.03

Abstract

Purpose - This study aims to develop and visualize two-dimensional (2D) and three-dimensional (3D) sine waves using the Spyder application as a programming-based physics learning medium to improve students’ understanding of wave concepts through dynamic visualization. Design/methods/approach - The study employs numerical simulation through mathematical modeling of waves using the Python programming language. Scientific libraries such as NumPy and Matplotlib are utilized to generate 2D and 3D visual representations of sine waves. The process involves writing simulation code in Spyder and conducting visual analysis of the resulting graphs. Findings - The results show that 2D visualization effectively illustrates simple harmonic oscillation patterns, while 3D visualization demonstrates radial wave propagation that corresponds to real physical phenomena such as water and sound waves. The use of Spyder enhances students’ understanding of key wave parameters, including amplitude, wavelength, phase, and propagation direction. Research implication/limitation - This study implies that programming-based visualization can support interactive and exploratory physics learning while strengthening students’ digital literacy and computational thinking skills. However, the study is limited to simulation-based analysis and does not yet include empirical measurement of learning outcomes or comparisons with other learning media. Originality/value - This research offers an innovative integration of Python programming and physics education by utilizing Spyder as a learning medium for visualizing sine waves in both 2D and 3D formats, providing added value in enhancing conceptual understanding and computational skills in physics learning.