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| hi. my name is Herman. I work in the field of design and manufacture of industrial machinery. Visit my blog at http://www.mymachineinfo.com/ to see my machine design. thanks. |
| New record. 148 tetrahedra in a loop such that the gap at the end has error 7 . 10^-14. So instead of the diameter of a proton, we (Mike Elgersman and I) are now down to the radius of a proton. Our previous record was 174 tetrahedra with a gap of... |
| Since a 3-member ring is allowed, I understood the problem to be like growth of a freely-jointed polymer chain, where the octahedra may be linked by both axial and edge connections. This seems to rule out simple symmetry operations to count the... |