声波干涉实验中的假象及其改进何海明（浙江绍兴市东湖中学，３１２０００）用音叉演示声波的干涉，是高中物理教材中的一个演示实验，物理杂志上对其改进方案也多有推荐，归纳起来有两种演示方法：一种是单用音叉演示，如教材所讲的方法；另一种是音叉配以共鸣箱演示．然... False Artifacts and Improvements in Sonic Interference Experiments He Haiming (Donghu Middle School, Shaoxing, Zhejiang, 312000) Demonstrating the interference of sound waves with tuning forks is a demonstration experiment in high school physics textbooks. There are also many recommendations for improvement programs in physical journals. There are two demonstration methods: one is to use tuning fork demonstrations, such as the teaching method; the other is the tuning fork with resonance box demonstration. Of course...