For come context, this uses a technique called CPPN’s (compositional pattern producing networks), where the inputs are (x, y, sqrt(x^2 + y^2)) and then there are several neural net layers with different activation functions and randomly initialized weights. It actually resembles the optical physics of light reflecting through glass (which explains why it sometimes looks like light reflecting through a gem).
Otoro wrote some great blog posts on this:
https://blog.otoro.net/2016/03/25/generating-abstract-patter...
Is this related in any way to how Nvidias NeRF's work?
It makes abstract patterns, some of which you may find pretty. It’s similar to other algorithmic art dating back to the 60s.