What is the Difference Between Regular and Diffuse Reflection

的key difference between regular and diffuse reflectionis that in regular reflection, the incident ray (射线落在表面上）和反射的射线（the ray bouncing back after striking the reflecting surface)have the same singleangle of reflection，而在扩散反射中，有许多散射的反射射线具有不同的反射角。

反射是我们可以在镜子或光泽表面上看到的图像。根据反射射线的角度，有两种类型的反射类型，例如规则或镜面反射和扩散反射。

内容

1.Overview and Key Difference
2.What is Regular Reflection
3.What is Diffuse Reflection
4.以表格的形式定期对漫反射
5.Summary – Regular vs Diffuse Reflection

What is Regular Reflection?

Regular reflection orspecular reflectionrefers to the mirror-like reflection of waves from surfaces. A common example of such a wave is light. There is a law of reflection, which describes that a reflected ray of light usually emerges from the reflecting surface at the same angle as the incident rayfalling on the mirror。但是入射射线和反射射线位于表面正常平面的相对侧，这是从入射射线和反射射线形成的平面。

的concept of reflection was first introduced by Hero of Alexander in AD c.10-70. Regular reflection differs from diffuse reflection because, in diffuse reflection, the reflected rays tend to scatter away from the surface.

According to the law of reflection, the light that encounters a boundary is affected by the optical and electronic response functions of the material towards the电磁辐射。

During regular reflection, the light reflects and arrives at the same angle. We can experimentally show the difference between regular reflection and disuse reflection by coating a surface with glossy paint and matte paint; the matte paint mainly shows the specular reflection behavior, while the surface with glossy paint mainly shows diffuse reflection.

定期反射的一些例子包括镜子上的可见光，无线电波和飞行物体，声音镜（反射声）和原子镜（反射中性原子）的微波。

What is Diffuse Reflection?

扩散反射是指从表面通过表面反射或其他波的反射scattering effect。In other words, in diffuse reflection, the waves are reflected from a surface in such a way that the incident ray is scattered at many angles. In contrast, in regular reflection, there is a single angle at which the incident ray reflects.

In an ideal diffuse reflection process, we can observe Lambertian reflection (there is equal luminance upon viewing from all the directions that are lying at a half-space that is adjacent to the surface.

Some examples of materials that can cause diffuse reflection include plaster (non-absorbing powder), paper (made of fibers), and white marble (polycrystalline). Generally, regular reflection does not happen in these materials due to surface roughness. Similarly, a flat surface does not always provide specular reflection. This is because the reflection mechanism does not actually occur on the surface. The scattering centers occur beneath the surface.

What is the Difference Between Regular and Diffuse Reflection?

反射是我们可以在镜子或光泽表面上看到的图像。根据反射射线的角度，有两种类型的反射类型为常规反射和弥漫性反射。常规反射和弥漫性反射之间的关键区别在于，在常规反射中，入射射线和反射射线具有相同的单个反射角，而在弥漫性反射中，有许多具有不同反射角的反射射线。

以下信息图列出了与表格形式的常规反射和弥漫性反射之间的差异，以进行并排比较

Summary – Regular vs Diffuse Reflection

Regular reflection refers to the mirror-like reflection of waves from surfaces, while diffuse reflection refers to the reflection of light or other waves from a surface through the scattering effect. The key difference between regular and diffuse reflection is that in regular reflection, the incident ray and the reflected ray have the same single angle of reflection, whereas, in diffuse reflection, there are many scattered reflecting rays having different reflection angles.

Reference:

1.“”Lambert’s Cosine Law and Diffuse Reflection Explanation。”BYJUS，2020年8月8日。

Image Courtesy:

1.“”Plane-Mirror”NCS Pearson，CC BY 4.0，通过Wikimedia Commons。
2. “Heart of the City water feature Sheffield – geograph.org.uk – 618552” By Steve F(CC BY-SA 2.0)via Commons Wikimedia
3. “Lambert2” By GianniG46 – Own work(CC BY-SA 3.0)via Commons Wikimedia