运用声悬浮现象测量声速的演示实验  

Measuring velocity of sound by using acoustic levitation

作　　者：黄学东[1] 俞嘉隆[1] 乔卫平[1] 

机构地区：[1]上海交通大学物理系,上海200240

出　　处：《大学物理》2005年第11期42-44,共3页College Physics

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.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.

关 键 词：声悬浮 声速 声压差 半波长 

分 类 号：O4-34[理学—物理]