In this study, we visualized the superposition principle of sound waves in a both-closed-end (BCE) resonance tube. The resonance tube is constructed using an acrylic tube with 2.64 cm internal diameter and 150 cm length, polystyrene beads to illustrate the positions of displacement nodes and antinodes and two identical detachable speakers as source of sound waves at both ends of the tube. The superposition principle of sound waves in a BCE tube is performed for two conditions: speakers at both ends are in-phase and 180° out-of-phase with each other. The findings indicate that the superposition principle of sound waves in a BCE tube changes the modes of harmonic series in the tube depending on the phase of speakers. The harmonic series in BCE tubes occur at the even mode (n  =  2, 4, 6...) for in-phase speakers and the odd mode (n  =  1, 3, 5...) for out-of-phase speakers. The experimental values of harmonic frequencies differ by less than 6.09% compared to the theo.....

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Tujuan kajian ini ialah untuk membangunkan sistem pembelajaran makmal berasaskan komputer (MBL) bagi eksperimen fizik di peringkat pendidikan tinggi. Pembangunan sistem ini dibahagikan kepada dua bahagian; bahagian pertama melibatkan pembangunan perkakasan dan bahagian kedua ialah pembangunan perisian. Pengelog Data merupakan perkakasan utama dalam sistem ini. Perkakasan lain yang digunakan ialah penderia-penderia. Perkakasan tersebut dikawal oleh komputer. Penderia ini ditentukur selaras dengan piawaian yang ditetapkan. Data dan parameter yang diperolehi daripada penentukuran digunakan dalam perisian untuk menentukan nilai piawaian berdasarkan voltan penderia itu. Pengaturcaraan perisian menggunakan Bahasa Visual Basic 6 atau Python (Salah satu daripada sistem perisian terbuka). Beberapa eksperimen fizik disediakan menggunakan perkakasan and perisian yang telah dibangunkan. Perisian ini boleh memaparkan data pada skrin komputer melalui graph. Penggunaan perkakasan dan perisian boleh d.....

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The aim of this study is to determine the effectiveness of multi-frames video recorded experiments (MFVREs) on pre-university students’ achievement for capacitor topic. This study was carried out among 60 Diploma Science students of Universiti Pendidikan Sultan Idris, Malaysia. Students’ pre-test and post-test scores were analyzed using independent sample t-test. The effectiveness of MFVREs on students’ achievement were analyzed for four subtopics of capacitor: basic concept of capacitor (S1), series connection of capacitors (S2), parallel connection of capacitors (S3) and combination of series and parallel connection of capacitors (S4). Findings revealed that MFVREs give significant effects on students’ achievement for S2, S3 and S4 subtopics but no significant effect to students’ achievement for S1 subtopic compared to PowerPoint slides. Thus, MFVREs approach can be used either as a teaching aid in normal classroom or a student-centered learning video in order to improve th.....

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