光穿过这些场产生衍射，发散如喷雾状的衍射光向前方传播，因此对物体产生了一个与光束传播方向相反的推动。
The spray of light scattered forward by these fields could push the object backward, against the movement of the beam itself.
从波动理论出发，证明极限情况下光的衍射结果就是光的直线传播。
Conclusion that result of diffraction of light is rectilinear propagation in limited condition is demonstrated from wave theory.
在小尺度封闭空间内，声波低频成分的波长与空间尺寸相当，声音在传播过程中所发生的散射、衍射等波动现象不容忽视。
Because of wavelength of sound at low frequencies being close to the dimensions of small enclosures, scattering and diffraction in the course of sound radiation can not be ignored.
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