Fresnel laws for curved surfaces

[Datseris]

In this arXiv paper: https://arxiv.org/abs/1904.05663 the authors discuss corrected transmission and refraction formulas for light and curved boundaries.

Even though in this package we don't have light rays (although we may have in the future, see #178 ) it still may be worth it to implement these laws as a function similar to law_of_refraction

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[asinghvi17]

Does the package have media? (i.e., friction, "gravity", etc.)? Otherwise, I can't see how you would implement this - you would need to know properties of the materials, right?

[Datseris]

I don't understand your concern to be honest. In principle one should be able to tie in as many parameters as they want in to the transmission and reflection functions. I used to do this to model Klein tunneling in graphene.

The "properties" of the materials are just tied into the reflection function?

[asinghvi17]

Okay, that makes more sense - I had assumed that you could create a terrain and have billiards propagate through that, but now that you mention that you need to provide those properties explicitly to the functions I can see how it could be done.

[Datseris]

law_of_refraction works in the same way. The two indices n1, n2 are tied into the functions.