利用光的反射对弦振动实验的改进

Improvement of String Vibration Experiment Using Reflection of Light

为了解决弦振动实验在操作过程中拉力杆无法水平而导致实验误差偏大的问题,研究改进了弦振动装置,使实验误差得到了很大程度的降低。本文利用光的反射原理,很好地解决了传统弦振动实验用肉眼观察拉力杠杆水平带来的较大误差的问题。研究表明通过改进的实验装置探究共振频率和弦上波腹数的关系其相对误差平均降低了1.94%,很好地验证了改进方案的可行性和有效性。

In order to solve the problem of large experimental error caused by the inability to level the tension lever during the operation of the string vibration experiment,the research has improved the string vibration device,so that the experimental error has been reduced to a large extent.The principle of reflection of light is used to overcome the large error caused by the level of the traditional string vibration experiment with the naked eye observation of the tension lever.The study shows that the relationship between the resonant frequency and the number of wave webs on the string is reduced by 1.94%on average by the improved experimental setup,which well verifies the feasibility and effectiveness of the improved scheme.