在高一物理波的叠加中,有这样一个问题:在宽阔的平静水面上,同时扔两颗石子,激起水波。已知两落水点A、B相距为4λ,(λ为波长),则水面上能产生不连续振动加强线有多少条?在A、B外垂直于AB直线MN上,振动的加强点有多少个?对于此题,学生不易 In the superposition of high-level physical waves, there is such a problem: On a wide calm water surface, throw two stones at the same time and stir up the waves. It is known that the distance between the two falling points A and B is 4λ (λ is the wavelength). How many pieces of reinforcing lines can be generated on the surface of the water? How many reinforcing lines are there on the surface perpendicular to the AB line MN outside A and B? For this question, students are not easy