physics question

WRONG
All Things Equal
All reflected light obeys the relationship, called Snell's Law, that the angle of incidence equals the angle of reflection. Just as images are reflected from the surface of a mirror, light reflected from a smooth water surface also produced a clear image. We call the reflection from a smooth, mirror-like surface specular (as shown in Figure 2a). When the surface of water is wind-blown and irregular, the rays of light are reflected in many directions. The law of reflection is still obeyed, but the incident rays (Fig. 2b) strike different regions which are inclined at different angles to each other. Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte.


圖片參考：http://acept.asu.edu/PiN/rdg/reflection/opticsRDG2.gif

Fig. 2 Light reflection from a) smooth surface (specular reflection ) and b) rough surface (diffuse reflection). In both cases the angle of incidence equals the angle of reflection at the point that the light ray strikes the surface.

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