1.求波长 在机械波的传播过程中,在传播方向上,相隔波长整数倍的两点的振动情况完全相同,这是波具有的空间周期性. 例1 如图1,一列简谐波沿一直线向左运动,当直线上某质点a向上运动到达最大位移时,a点右方相距0.15m的b点刚好向下运动到最大位移处,则这列波的波长可能是( ) (A)0.6m (B)0.3m 1. Seek wavelength In the propagation process of mechanical waves, in the direction of propagation, the vibration of two points separated by an integral multiple of the wavelength is exactly the same. This is the spatial periodicity of the waves. Example 1 As shown in Figure 1, a series of harmonic waves is always along The line moves to the left. When a certain point on the straight line moves up to the maximum displacement, the point b on the right side of 0.15 m just moves down to the maximum displacement. The wavelength of this wave may be () (A) 0.6m (B) 0.3m