polyhedra

Infinite Recursive Zoom In of Nested Platonic Solids

Thursday, 4 August 2011 by Bruce Rawles

Infinite Nested Platonic Solid Recursion

This continuous loop rotates around a nest of the five Platonic Solids: Cube (red), Tetrahedron (yellow), Octahedron (green), Icosahedron (blue) and Dodecahedron (purple), returning to a cube oriented along the same x-y-z axes one third the size in each dimension as the outer cube. The transparency of the inner cube changes from 100% opaque to 100% transparent as the animation proceeds, which allows playing as an infinte recursive loop. Each “new cube” (as one loop of the animation completes) has 1/27th the volume of the original, since the side length is 1/3 of the starting cube.

This is a higher resolution version of the clip originally uploaded to YouTube on March 31,2007.

Zometool Inspiration

Saturday, 28 May 2011 by Bruce Rawles

Carlos Neumann zometool microdo — Carlos Neumann with a Zometool ‘microdo’ model

Recently we had lunch in Denver, Colorado with Carlos Neumann of Zometool, the maker of my favorite geometric modeling tool/toy. It’s really both a fabulous design and 3D visualization modeling environment AND a fun toy for any age – even those who don’t think they like geometry. He brought along a Zometool model of the “Microdo.” See the close up photograph below:

zometool microdo photo — Zometool “microdo” model

and a screen snap of it using the new Zomepad software, a VERY cool 3D modeling app that lets one rotate, modify, translate, zoom, etc. Zometool models in real time. The screen snaps just give a hint of how fun this app is!

Zomepad Microdo model — Zomepad image of Microdo model

Here’s a chrome plated (dare we say “Chrome Zome”? :-) hub. Notice that the polygons that make up the hub are equilateral triangles, regular pentagons and golden rectangles, which provide phenomenal versatility in creating Platonic and Archimedean Solids, as well as a staggering array of amazing shapes that use these foundational geometries and their 3-fold and 5-fold rotational symmetries and much more. Stay tuned for fun and decorative developments with these shiny orb-like gems! :-)

ZomeTool Chrome plated hub — Chrome plated Zometool hub

Another thing to notice about the Zomepad models is that there are background dots: red (pentagonal), yellow (triangular) and blue (golden rectangular) that are aligned behind the model as it rotates around so that you can see when you’re lined up with an axis of rotation and/or symmetry. Pretty neat!

Here are the default models that you can explore with the current pre-release version of the ZomePad app:

ZomePad model - pentagram/pentagon fractal — ZomePad model – pentagram/pentagon fractal

ZomePad Hypercube (Tesseract) model — ZomePad Hypercube (Tesseract) – 3D ‘shadow’ of a 4D polytope

ZomePad 3D Hexagonal (honey comb) grid model

Here are some Zometool models I put together years ago:

zometool stellated dodecahedron — Zometool stellated dodecahedron

The stellated dodecahedron model hung above my office cubicle at Grass Valley Group in northern California for several years; sure made a great landmark to direct folks to my desk! :-)

Here’s another of the countless topologies and geometric variations that one can make with Zometool hubs and struts. If you enjoyed Tinkertoys (or perhaps Erector sets, etc.) when you were a kid, check out Zometool. There really isn’t anything else like it. The engineering and precision design of the hub alone is an amazing story in itself that Marc Pelletier gave us a quick tour of when I was at a sacred geometry conference in Boulder, Colorado years ago, where I met lots of wonderful geometer colleagues I’m still mostly in touch with.

ZomeTool model — Zometool model (one of countless variations to explore)

Dodecahedra Origami Luminaria

Monday, 2 May 2011 by Bruce Rawles

After seeing these at a friend’s home recently, I did a google search and found a couple of nice tutorials (Dodecahedron Star Lantern Tutorial from Mom’s Crafty Space and another from WholesomePlayTime.com) for making these Dodecahedron (Pentagram) Star Lanterns; these could also be made using the Dodecahedron foldup pattern, although this design with the 5 folded over triangles on each pentagonal face highlights the inscribed pentagram (5-pointed star) on each face in an artistic way. This is a great kid’s construction project featuring sacred geometry.

Sacred Geometry Communities

Sunday, 13 March 2011 by Bruce Rawles

The Geometry Code – Sacred Geometry Blog – Conversations – Global Community (this is a blog-ish page from our prior site)

Videos: interviews and more

Here’s a video interview about The Seven Hermetic Laws, Sacred Geometry and more with Alan Steinfeld of New Realities and Bruce Rawles now on YouTube (originally on Emerald Energies) recorded in Sedona, Arizona at the Global Sacred Geometry Conference in Feb 2004. Thanks also to Alan Gutierrez and Angélique DeWolfe for their efforts with this interview.

Here’s a video by Dan Shaw (a long time fellow geometer) of my commentary on the Planetary Geometries: Martineau Solar System Series artwork when it was at the Mobius in Ashland, Oregon during April, 2007.

Audios: interviews and more

This is an audio interview with Jake Steele of Author’s Audio about sacred geometry, the Great Pyramid and more.

Geometric Animations

Here’s an animation I did showing how the Platonic Solids nest perfectly in an infinite recursive 3:1 size scaled loop with each iteration oriented the same – the original video has MUCH better resolution… and the looping is seamless in the QuickTime viewer! There are more details on my blog.)

Local Community (Southern Oregon)
Ashland Geometers – a.k.a. Hedronists

We have a wonderful group of kindred geometers that meet somewhat regularly in Ashland, Oregon; we call ourselves by the whimsical name “Hedronists”. We previously had links to our collaborative video/dialogues presence on MySpace, LuminosityWeb, and ning.

Here’s my individual YouTube site, which has one of our Hedronists meetings in parts 1, 2, 3, 4, 5, and 6.

For more, please visit our Resources and Events pages.

Sacred Geometry Blog Post Archives

Saturday, 12 March 2011 by Bruce Rawles

Here are some archives of past blog posts (on my personal blog) on a variety of sacred geometry and related topics. Now that the new website has a blog devoted to sacred geometry, you’ll find the new posts on this site.