On 01/06/10 17:11, Reentrant wrote:

Why do they have to be spheres? Any shape will do provided there's just
a point contact with each neighbour. Maybe it would even work if the
faces were flat surfaces,


but the alignment would need to be perfect.


That's why everyone uses spheres ;-

BTW - flat wouldn't be so good, except in a vacuum as the air cushion
effect would become quite noticeable.


--
Tim Watts

Hung parliament? Rather have a hanged parliament.