My brain appears not to have entirely atrophied yet

[fivemack]

Have some pretty sphere-packing pictures:

Here they are. An evening's work, which I feel is probably a little more than it would have taken an actually competent mathematician, but hopefully adequately attractive.

I do not promise to hand over the Mars bar in person to any of my foreign correspondents who solves the problem, at least not with any unusual dispatch.

It also gives an optical illusion I hadn't seen before; the circle below is circular - rotate it in GIMP and overlay it on itself if you doubt me - but with the converging pink lines below it, it looks very squashed at the bottom:

Comments

[akicif.livejournal.com]

Nice. As a former crystallographer, though, I'd be interested in knowing if you've looked at packing in lattices.

And looking for a website with symmetry operatord for the 230 space groups led me to this one (http://www.ccp4.ac.uk/html/cheshirecell.html).