大学物理 ›› 2005, Vol. 24 ›› Issue (11): 42-42.

• 著者文摘 • 上一篇    下一篇

运用声悬浮现象测量声速的演示实验

黄学东 俞嘉隆 乔卫平   

  1. 上海交通大学,物理系,上海,200240
  • 出版日期:2005-11-25 发布日期:2005-11-20

Measuring velocity of sound by using acoustic levitation

  • Online:2005-11-25 Published:2005-11-20

摘要: 介绍一个新颖的运用声悬浮现象测量声速的演示实验.详细分析讨论了声波在垂直谐振腔内使物体悬浮于空中的条件与位置.

关键词: 声悬浮, 声速, 声压差, 半波长

Abstract: A new method of measuring velocity of sound by using acoustic levitation is introduced. The conditions and the positions of objects suspending in air by vibrated sound wave within an acoustic resonator are analyzed and discussed in detail.

Key words: acoustic levitation, velocity of sound, difference of sound pressure, a half of wavelength

中图分类号: 

  • O4-34