Objects that cannot be taken apart with two hands
Have you ever felt, when you were trying to put something together,
that you needed an extra hand?
This sculpture represents research results on the number of hands that
a robot would need to assemble collections of simple geometric
objects. It is made from 30 identical aluminum tubes, grouped and
colored as five twisted tetrahedra. The construction is based on the
symmetries of a dodecahedron -- from different views you can see
two-fold, three-fold, and five-fold symmetries.
-- Jack Snoeyink (snoeyink@cs.ubc.ca)