Cluster of 195 SpheresTetrahedra in a Hexagonal 3D Net

To this demonstrations, one needs to know the basic concepts about crystallographyA sphere is placed at each node and edge of a frame consisting of 20 golden rhombohedra. There is one sphere at the center, 12 at the vertices of an icosahedron, 12 again at the vertices of another icosahedron, 60 at the vertices of a truncated icosahedron, 30 at the vertices of an icosidodecahedron, 60 at the vertices of another truncated icosahedron, and 20 at the vertices of a dodecahedron, for a total of 195 altogetherComponente Curricular::Educação Superior::Ciências Exatas e da Terra::Físic