摘要
受抽气盘底座或悬绳的影响,传统的探究声音传播条件的实验效果并不理想.利用磁悬浮的方式隔绝了声源与周围介质,利用激光在烟雾中的丁达尔效应来指示抽气过程中钟罩内的真空程度,形象直观地验证了声音和光传播条件的不同.
Aiming at the defects in traditional experiment of exploring sound propagation conditions,an improved approach was discovered.The improved experiment used magnetic suspension to isolate sound source from surrounding medium.Based on Tyndall effect,laser was used to indicate the vacuum degree in the inverted bell jar.The improved experimental device was easy to operate,and the experimental phenomenon was obvious.
作者
徐忠岳
XU Zhong-yue(Donghai Middle School,Zhoushan 316000,China)
出处
《物理实验》
2018年第4期61-63,共3页
Physics Experimentation
关键词
声音
传播条件
磁悬浮
激光
sound
propagation condition
magnetic suspension
laser
