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1问题提出在波的干涉教学时,大部分教师常采用这样的教学方式:先通过演示实验,引导学生观察两列相干水波相遇后,形成的物理现象.即在振动的水面上,出现了一条条从两个波源中间伸展出来的相对平静的区域和激烈振动的区域,相应地可以观察到明暗相间的条纹.然后教师再借助图1向学生解释为什么会形成这种现象.但是水波的干涉是立体的、动态的,而图1却是平面的、静止的.学生必须充分发挥自己的空间想象力,将实线想象
1 PROBLEM PROBLEMS In the teaching of wave interference, most teachers often use such a teaching method: First, through demonstration experiments, students are guided to observe the physical phenomena formed after the two coherent waves meet each other, that is, on the surface of vibration, a The relatively calm and intensely vibrating areas stretching from the middle of the two wave sources allow the observation of dark and light stripes, which the teacher then explains to the student using Figure 1, but the interference Three-dimensional, dynamic, while Figure 1 is flat, stationary students must give full play to their own space imagination, the solid line of imagination