They are 3D Mandelbrot models,
Taking the various Mandelbrot / Julia / Menger sets, and pulling them from 2 to 3D.
Takes a bit of tinkering, but it's fun messing with them.
(
J Peasemould Gruntfuttock Alpha Mike Foxtrot,
Wed 27 Apr 2011, 2:16,
archived)
Can anyone have a stab at doing this stuff?
Or is it arcane, ultra-specialised SORCERY that we mortals would be better-advised to leave well alone?
(
Sea Tramp the thinking woman's 8 Ace,
Wed 27 Apr 2011, 2:20,
archived)