Open AccessDevelopment of Sound Wave Experimentation Tools Which Influenced by Relative Humidity Using Audacity
Author(s) -
Hadis Mariyo,
Nur Islami,
Azizahwati Azizahwati
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1351/1/012056
Subject(s) - relative humidity , hygrometer , humidity , speed of sound , boiling , acoustics , tube (container) , water vapor , sound (geography) , environmental science , approximation error , materials science , meteorology , physics , mathematics , composite material , thermodynamics , statistics
The development of experimental tools is important for teachers to assist in the learning process of physics. The purpose research is to develop a sound wave experiment tool that is influenced by relative humidity. The experiment tool was made using a closed and open end PVC tube with a length of 142 cm. Relative humidity obtained is boiling water vapor. Water vapor is entered the PVC tube and the relative humidity level is measured in the tube using a hygrometer. The experiment tool is equipped with audacity software to detect and display sound waves which enter PVC tube. The experimental results are viewed through a graph of sound velocity against relative humidity levels in the tube. When the temperature is 29°C the relative humidity value is 86% with a sound speed of 412 ms −1 and measurement error of 2.01%. The conclusion is the speed of sound increases linearly with increasing relative humidity.