在高中阶段,我们所谈的波形图象是指横波的图象.它描述的是某一时刻,沿波的传播方向上无数质点在各自的平衡位置附近振动的位移矢量末端的连线,在时间上具有瞬时性,在空间上具有拓展性,在处理具体问题时既要考虑质点振动的周期性同时又要考虑波传播的周期性.概括起来有关波形图象的实质知识点有三个 In high school, the waveform image we talk about is the image of a transverse wave. It describes the connection of the end of the displacement vector at a certain moment along the propagation direction of the wave in which numerous particles vibrate near their equilibrium position. Time is transient and spatially scalable. When dealing with specific problems, we must consider not only the periodicity of the particle vibration but also the periodicity of the wave propagation. To sum up, there are three substantive points about the waveform image.