在没有任何光的房间里,我们看不见任何物体.但是当打开电灯后,我们能看见电灯,是因为电灯发出的光线进入了我们的眼睛.房间内大部分物体是不发光的,为什么我们也能看见呢?那是因为这些不发光的物体,能够将光线反射入我们的眼睛.我们知道光的反射分为镜面反射和漫反射.如图1甲,一束平行光入射到平面镜时,会发生镜面反射,反射光仍然 We could not see anything in a room without any light, but when the lamp was turned on, we could see the lamp because the light from the lamp came into our eyes, and most of the objects in the room were non-luminous, and why did we Can you see that? Because of these non-luminous objects that reflect light into our eyes, we know that the reflection of light is divided into specular and diffuse, as shown in Figure 1. When a parallel beam of light is incident on a plane mirror, Specular reflection occurs, the reflected light is still