RefractiveIndex.jl for refractive indices?

[stillyslalom]

Congrats on getting this great package registered. I only became aware of it thanks to the registration bot on Twitter.

RefractiveIndex.jl is meant to cover much of the same functionality as PhysData - let me know if there's something I can do to make it usable for Luna.

[jtravs]

Interesting, I wasn't aware of this package, and this could be very useful. We do have to be very careful about the refractive index data we use. But for materials that we have not curated, falling back to your package would make sense.