It was a bit hard for me to understand why these terms are able to describe the optical properties (mainly the fresnel term) of an object since because we aren't able to see how each of these terms are computed. I found a useful blog
here. It talks about a few methods for calculating each of the three highlighted quantities. The formulas used in the blog have allowed me to gain a better understanding of the Fresnel term in particular. It essentially characterizes how the refractive properties of the given material and our own viewpoint interact with each other to produce the image we see.
It was a bit hard for me to understand why these terms are able to describe the optical properties (mainly the fresnel term) of an object since because we aren't able to see how each of these terms are computed. I found a useful blog here. It talks about a few methods for calculating each of the three highlighted quantities. The formulas used in the blog have allowed me to gain a better understanding of the Fresnel term in particular. It essentially characterizes how the refractive properties of the given material and our own viewpoint interact with each other to produce the image we see.