现行高中教材中关于声波干涉实验往往是这样进行的 :让学生“环绕正在发声的音叉走一周 ,或者人不动而使音叉绕叉柄的纵轴旋转 ,就会听到声音忽强忽弱”。这一方法虽已沿用多年 ,但在应用中它的效果有时并不稳定。鉴于此 ,我们利用共鸣管中空气柱与发声音叉所产生的共鸣 ,来改? The current high school textbooks on acoustic interference experiments are often conducted in such a way that students “wrap around the phoning tuning fork for a week, or the person will not move and rotate the tuning fork around the vertical axis of the fork handle and will hear the sound fluctuate”. . Although this method has been used for many years, its effect is sometimes unstable in applications. In view of this, we use the resonance generated by the air column and the sound fork in the resonance pipe to change?