This was fascinating, thank you. The wikipedia articles have gifs that eminently remind me of gliders in cellular automata. https://en.wikipedia.org/wiki/Airy

This was fascinating, thank you. The wikipedia articles have gifs that eminently remind me of gliders in cellular automata. https://en.wikipedia.org/wiki/Airy_beam https://en.wikipedia.org/wiki/Airy_beam https://en.wikipedia.org/wiki/Bessel_beam https://en.wikipedia.org/wiki/Bessel_beam