红外光、紫外光、可见光、X射线及γ射线等,都是以光子形式发射的,均可称为辐射。光的辐射是一种电磁波,它具有双重特性,为一种波动,或呈质点流。当它被吸收后,光能被转变为化学能或热,在这种情况下,光被当作质点或量子。光对机体作用的效应,一般可概括为四类:第一是对小动物或植物的致死效应;第 Infrared light, ultraviolet light, visible light, X-rays and γ-rays are all emitted in the form of photons and can be called as radiation. Light radiation is an electromagnetic wave that has a dual nature as a wave or in particle flow. When it is absorbed, the light energy is converted to chemical energy or heat, in which case the light is treated as a particle or a quantum. The effect of light on the body can generally be summarized into four categories: the first is the lethal effect on small animals or plants;