Meissner bodies are fascinating. Wikipedia has a little on them, but there's some more detail on MathOverflow.
The image is Copyright Christof Weber 2009, who wrote an excellent paper about them and has set up an interactive java demo.
You can also buy your own set to play with.
This is the personal site of Cal Henderson, Tiny Specker, ex Glitch engineer, ex Flickr architect, programmer, author and chronic complainer.
I give occasional talks, write code and sometimes articles. I also blog at World of Theorycraft and those links show up here too.
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