random stuff( Facing Ratio shader node in Maya)

website : http://www.stevenchan.us/facing_ratio_shader_node_in_maya

this is something i found on the net that is related to the chrome exercise and node.it has something interesting point that i like , for example in the first section , it talk about ratio of the light and how effective light is being bound back at the camera

i felt that this is important as when i do my double cheese burger, one of the main problem i encounter is that the amount of light effective bounce off my burger. even consult my tutor, and try my tutor method by adding a point light. the result is not quite what i want. i want my double cheese burger at some point maybe at the top of the upper bun to have more reflect light than the bottom of the upper bun. something like a chrome ball, the shading of colour , but this time a shading in light.

another thing that i like is the toon shading , compare to x-ray and velvet, I find that toon shading is more comfortable and i think it will be much easier for me as a beginner  to start off with. it is similar to chrome ball and it is like an extension to it, i hope i have some time and try to do the toon shading when i free

all of the image above is taken from http://www.stevenchan.us/facing_ratio_shader_node_in_maya