When reflection of light photoemission to two kind of different natures, then has part of light, from the interface shoots in the original nature the phenomenon, is called the reflection of light. law of reflection:
(1) incident ray, reflect rays and normal on identical plane mirror, and incident ray, reflect rays in normal both sides.
(2) the incidence angle is equal to the reflection angle. the surface smooth object, easy to form the light the regular reflection, forms the dazzling glare, instead looks at not the clear object. in the usual situation may distinguish shape and the existence the object, therefore is as a result of the light diffusion. after sunset, can see the object temporarily, is therefore because in the air the dust causes the light diffusion. Regardless of being the regular reflection or the diffuse reflection, must observe the law of reflection。
When the light shines after the object on, some part of light have been absorbed (with light frequency related), other cannot the light which absorbs be the reflected light. The reflection divides into the regular reflection and the diffuse reflection.
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