期刊
AMERICAN JOURNAL OF PHYSICS
卷 77, 期 3, 页码 197-203出版社
AIP Publishing
DOI: 10.1119/1.3041420
关键词
acoustic wave propagation; acoustic wave refraction; acoustic wave scattering; physics education; student experiments
资金
- BYU Frontiers Mentorship
A balloon filled with a gas that has a different sound speed than that of air has been used as an acoustic lens. One purpose of the lens is to show refraction of sound waves in an analogy to geometric optics. We discuss the physics of the balloon lens demonstration. To determine the validity of a gas-filled balloon as a classroom demonstration of an acoustic lens and to understand the corresponding phenomena, its physics is considered analytically, numerically, and experimentally. Our results show that although a geometric analogy is a good first-order approximation, scattering theory is required to fully understand the observed phenomena. Thus this demonstration can be adapted to a wide range of students, from those learning the basic principles of refraction to advanced students studying scattering.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据