Visualization of Harmonic Series in Resonance Tubes Using a Smartphone
| Autor: | Rosly Jaafar, Shahrul Kadri Ayop, Ahmad Tarmimi Ismail@Illias, Kok Keng Hon, Anis Nazihah Mat Daud, Mohd Helmy Hashim |
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| Rok vydání: | 2016 |
| Předmět: |
Spectrum analyzer
Signal generator Computer science Acoustics 05 social sciences 050301 education General Physics and Astronomy Acoustic wave 01 natural sciences Education Visualization 0103 physical sciences Measuring instrument Oscilloscope 010306 general physics Harmonic series (music) 0503 education Acoustic resonance |
| Zdroj: | The Physics Teacher. 54:545-547 |
| ISSN: | 0031-921X |
| DOI: | 10.1119/1.4967895 |
| Popis: | Because sound waves are such an abstract concept in physics, hands-on activities are often recommended to improve students’ understanding and strengthen their knowledge. However, most schools do not have sufficiently sophisticated measuring instruments to perform sound wave experiments. Recently, researchers used smartphones as oscilloscopes, signal generators, and spectrum analyzers for sound wave experiments. Here we provide a complement to these ideas, developing an affordable smartphone-based sound wave experiment kit to visualize the harmonic series in resonant tubes. It is based on Kundt’s tube, which was originally used to determine the mechanical properties of unknown metal rods and acoustical properties of gases. We also use it to demonstrate the difference in particles’ distribution in harmonic series in both-closed-end, one-closed-end, and both-open-end tubes. |
| Databáze: | OpenAIRE |
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