Newly published: Natural Illumination Solution for Rotating Space Se

That habitat has a weird shape, and I'm not sure I understand it yet. It seems that the light is coming in "under the floor," and that half the volume is dedicated to bouncing light around. Is all this volume pressurized?

It also seems that half the cylinder is on one side of a curved reflecting wall and half is on the other side.
I think I need more illustrations, and maybe a video.
The whole "sweet spot" thing is interesting. While habitats can be made larger and smaller than five thousand metres radius, it looks like that may become the preferred size. Adjust for materials, I suppose.