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驻波是一种特殊的干涉现象,一般是由振幅相同,传播方向相反的两列相干波迭加后形成的.我在教学中,利用电磁打点计时器做驻波实验,取得了令人满意的效果,能够满足一般实验要求.现介绍如下:一、实验仪器电磁打点计时器一个,弦线(线绳或普通绵线,最好用二胡丝弦)适量,定滑轮一个,砝码若干.
Standing wave is a kind of special interference phenomenon. It is generally formed by superposition of two columns of coherent waves with the same amplitude and opposite propagation directions. In teaching, I used the electromagnetic point timer to perform standing wave experiments and achieved satisfactory results. The effect can meet the general experimental requirements. Now introduced as follows: First, the experimental instrument electromagnetic timer one, string (line or ordinary cotton thread, preferably with erhu string) right amount, fixed pulley, a number of weight.