摘要
通过研究发现文献中的木摇铃发声原理的观点是错误的.适当改变木摇铃的器材,通过一系列实验,观察其在不同情况下是否发声,证实其发声源于绳结与木棍之间的摩擦振动.
mechanism is carried out to was produced Wooden rattle is a kind of old toy. The current explanation of its sound-production incorrect. By making suitable changes of the wooden rattle, a series of experiments were investigate in what situations it could produce sound. The results showed that sound by the friction between the knot and the bar of the wooden rattle.
出处
《物理实验》
2013年第9期17-19,22,共4页
Physics Experimentation
基金
中国教育学会物理教学委员会2013年-2016年全国物理教育科研重点课题
南京市教育科学"十二五"规划2011年度课题(No.Z1020111069)
关键词
木摇铃
声音
振动
wooden rattle
sound
vibration
