There is an example http://demonstrations.wolfram.com/RetroreflectiveSphere/
I need to change radius of existing circle to 8.5, index of refractionindex to my 1.47 and add one more circle with radius 5.35 and create logic for refraction on this circle with refractionindex 1.76. I plotted circles and found, where I can change refractionindex of outside circle.There is an example http://demonstrations.wolfram.com/RetroreflectiveSphere/
Any advices? Sorry for bad english.
Attaching file.
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