大学物理 ›› 2014, Vol. 33 ›› Issue (10): 35-35.

• 著者文摘 • 上一篇    下一篇

亥姆霍兹旋转木马演示仪的实验设计

李楠 刘盼盼 朱常青 刘伟 史庆藩   

  1. 北京理工大学物理实验中心,北京100081
  • 出版日期:2014-10-25 发布日期:2014-10-20

The experimental design of Helmholtz carousel demonstrator

  • Online:2014-10-25 Published:2014-10-20

摘要: 介绍了亥姆霍兹旋转木马在制作过程中的技术路线以及设计技巧.该装置利用亥姆霍兹共鸣器原理,把共鸣球颈口声压巧妙地转化为旋转的动力,可以通过演示旋转快慢来研究共鸣器共振强度与外界声源频率、强度以及自身物理参数的关系,经过演示实验证明教学效果良好。

关键词: 声共振, 亥姆霍兹旋转木马, 演示实验

Abstract: The technology roadmap and design skills for producing Helmholtz carousel are described. The device cleverly transfers sound pressure of the neck into rotary power through the principle of Helmholtz resonator,and can be used to study the relationship between resonance and the intensity of the external sound source frequency,intensity and physical parameters of resonator by demonstrating the rotation speed of the resonator. Experiments show that the device has good teaching effect.

Key words: acoustic resonance, Helmholtz carousel, demonstration experiment

中图分类号: 

  • O441.1