Determining the heat capacity ratio of air by sound wave analysis of Helmholtz resonance

Authors

Ramon Carlo L. Cruzpero ⋅ PH Department of Physics, University of San Carlos
M. C. A. Del Castillo ⋅ PH Department of Physics, University of San Carlos
Albert James M. Licup ⋅ PH Department of Physics, University of San Carlos
Claude R. Ceniza ⋅ PH Department of Physics, University of San Carlos

Abstract

In this work, the heat capacity ratio of air at room temperature is determined by wave analysis of Helmholtz resonance. By popping a cork stopper from the mouth of a wine bottle and analyzing the frequency components of the sound, we obtained the heat capacity ratio γ = 1.36±0.07. The random error is attributed mostly to uncertainties in the reading of the Helmholtz resonator's cavity volume and effective length. This method looks suitable for the undergraduate physics laboratory as it introduces the concept of Helmholtz resonance at the same time provide an alternative method for measuring the heat capacity ratio.

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Issue

2008: Proceedings of the 26th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2008-3D-05

Section

Physics Education

Published

2008-10-22

How to Cite

[1]

RCL Cruzpero, MCA Del Castillo, AJM Licup, and CR Ceniza, Determining the heat capacity ratio of air by sound wave analysis of Helmholtz resonance, Proceedings of the Samahang Pisika ng Pilipinas 26, SPP-2008-3D-05 (2008). URL: https://proceedings.spp-online.org/article/view/SPP-2008-3D-05.