Tags » Platonic Solids

Star Tetrahedron, the Star of David

Reposted from The Awakening Website

In 1959, a Czechoslo­vakian radio engineer, named Karl Drbal, received a patent for a model pyramid that regenerates a dull steel razor blade to its full sharpness. 518 more words

All Articles 2016

The Troiacord (El Troiacord) by Miquel de Palol

This review is the culmination of a decade-long obsession. I first encountered the name of Miquel de Palol in a book on contemporary Spanish literature in which there wasn’t a word on… 8,390 more words

Reviews

Trying to be Edgy

Maths and making stuff! I spent some time this weekend folding up the Dodecahedron pictured above. Here is the link for Instructions on how to build your own Origami Dodecahedron. 368 more words

Mathematics

Represent 3D shapes in 2D with Excel scatter graph

Platonic Solids have been studied for thousands of years for its mathematical beauty and symmetry. The five platonic solids are:

The vertices of the regular octahedron with its centre at origin will be as below. 355 more words

Excel

Shape of the Universe

Shape of the Universe

From The Status of Cosmic Topology after Planck Data

In the last decade, the study of the overall shape of the universe, called Cosmic Topology, has become testable by astronomical observations, especially the data from the Cosmic Microwave Background (hereafter CMB) obtained by WMAP and Planck telescopes.

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Cosmology

Platonic Solids and the Golden Ratio

There are five regular polyhedra. These are they: tetrahedron, cube/hexahedron, octahedron, dodecahedron and icosahedron. Here is a short summary in form of a table about the vertices, edges, faces and volumes of these solids: 184 more words

Math