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光的反射种类,在初中物理教材中分为镜面反射和漫反射两类;分别对它们下了定义,并描述了这两类反射特征。但从教材中对这两类反射定义和特征描述这两方面分析光在球面镜上发生的反射属哪类反射却产生了矛盾。1987年版老教材中,对镜面反射定义是:光在平滑的物体表面发生的反射称为镜面反射;其特征是:平行的入射光经反射后仍然平行射出。漫反射定义为:光在粗糙物体表面发生的反射称为漫反射;其特征是:平行入射光经反射后,反射光向各个方向都有,不再保持
The types of light reflections are divided into two types: specular reflection and diffuse reflection in junior high school physics textbooks; they are defined separately and describe the two types of reflection characteristics. However, from the teaching materials, it is analyzed whether the reflections of the light reflected on the spherical mirror are contradictory to the two types of reflection definition and characteristic description. In the 1987 edition of the old textbook, the definition of specular reflection was: The reflection of light on the surface of a smooth object is called specular reflection; its characteristic is that parallel incident light is still emitted in parallel after being reflected. Diffuse reflection is defined as: The reflection of light on the surface of a rough object is called diffuse reflection; its characteristic is: after reflection of parallel incident light, the reflected light is in all directions and is no longer maintained.