You can read a bit about the companyâs history in this article, but I canât point you to the companyâs web site for the simple reason that it doesnât have one. Yes, as amazing as this is, here in mid-2009 Arca Swiss lacks a web site, one of the few companies of any size in the photographic industry without one.
A pyritohedron is a dodecahedron with pyritohedral (T h) symmetry. Like the regular dodecahedron, it has twelve identical pentagonal faces, with three meeting in each of the 20 vertices. However, the pentagons are not constrained to be regular, and the underlying atomic arrangement has no true fivefold symmetry axes.
An Icosahedron is a polyhedron with 20 faces which are all equilateral triangles. It has 20 faces, 30 edges and 12 vertices. The surface area of an icosahedron is given by , where a is the edge length of the icosahedron. The volume of an icosahedron is given by , where a is the edge length of the icosahedron.