(Nanowerk News) Freestanding clusters of twenty gold atoms take the shape of a pyramid, researchers discovered. This is in contrast with most elements, which organize themselves by forming shells ...

A 3D shape with all straight edges and flat faces is a polyhedron. Other 3D shapes with least one curved surface are not polyhedra. A 3D shape with regular polygonal faces, meeting at equal angles, is ...

The number of Indian stamps in the collection were almost thrice the number of stamps of other countries, although the fewer foreign stamps created a niche for themselves by coming in triangular, ...