00:01
Here we have to decide whether the following surfaces will cause specular or diffuse reflection.
00:10
First, we will note two main things about these different types of reflections.
00:15
The first is that specular reflection, which i denote with an s, is occurring on smooth surfaces.
00:27
So when light bounces off of a smooth surface, we have a specular reflection, which also reflects linearly.
00:38
So light bounces off as expected by the reflection law, theta i equals theta r, which we use for plain mirrors.
00:52
That looks like this.
00:55
Okay.
00:56
For diffuse, on the other hand, this type of reflection occurs on rough surfaces.
01:08
The effect of diffuse reflection occur randomly.
01:12
So when we have an incoming light source, every direction is reflected back out of it.
01:27
So it's not reflected in a way that we would expect.
01:31
So it's random at the macroscopic level...