WriteClub » 3D http://write-club.net A friendly group for writers Fri, 18 May 2012 17:34:11 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 A 3D Mandelbrot http://erkdemon.blogspot.com/2010/06/3d-mandelbrot.html http://erkdemon.blogspot.com/2010/06/3d-mandelbrot.html#comments Thu, 24 Jun 2010 23:27:00 +0000 ErkDemon http://write-club.net/2010/06/a-3d-mandelbrot/feed/ 0 A 3D Mandelbrot http://erkdemon.blogspot.com/2010/06/3d-mandelbrot.html http://erkdemon.blogspot.com/2010/06/3d-mandelbrot.html#comments Thu, 24 Jun 2010 23:27:00 +0000 ErkDemon http://write-club.net/?guid=d9f97b3b0611044bd17a07b77e25fc88 http://write-club.net/2010/06/a-3d-mandelbrot-2/feed/ 0 3D Audio, and Binaural Recording http://erkdemon.blogspot.com/2010/03/3d-audio.html http://erkdemon.blogspot.com/2010/03/3d-audio.html#comments Sun, 28 Mar 2010 02:48:00 +0000 ErkDemon http://write-club.net/2010/03/3d-audio-and-binaural-recording/feed/ 0 Virtual Lego http://erkdemon.blogspot.com/2010/03/virtual-lego.html http://erkdemon.blogspot.com/2010/03/virtual-lego.html#comments Fri, 19 Mar 2010 18:30:00 +0000 ErkDemon http://write-club.net/2010/03/virtual-lego/feed/ 0 Virtual Lego http://erkdemon.blogspot.com/2010/03/virtual-lego.html http://erkdemon.blogspot.com/2010/03/virtual-lego.html#comments Fri, 19 Mar 2010 18:30:00 +0000 ErkDemon http://write-club.net/?guid=234881748ac49ab4548b95265565f24e http://write-club.net/2010/03/virtual-lego-2/feed/ 0 The Tetrahedral Triple-Helix http://erkdemon.blogspot.com/2009/12/tetrahedral-triple-helix.html http://erkdemon.blogspot.com/2009/12/tetrahedral-triple-helix.html#comments Sun, 20 Dec 2009 04:57:00 +0000 ErkDemon Tetrahedral triple-helix, Eric Baird 2009Mathematicians playing with geometrical solids tend to concentrate on the finite ones. Those provide a nice satisfying sense of closure, and they're cheaper to build with straws and pipecleaners than the infinite ones.

This is an interesting shape that doesn't fall into that category. It's a simple rigid stack of tetrahedra that generates a "column" with a triple-helix. The odd thing is, you'd expect an architect somewhere to have already used this on a structure somewhere ... but I don't recall ever seeing it.
Maybe I missed it.

The sequence rotates through [~]120 degrees and [nearly] maps onto itself every nine tetrahedra (that is, the tenth [nearly] aligns with the first). If you want to follow one of the spiral arms through a complete [~]360-degree revolution, that takes 9×3=27 tetrahedra, (#28 corresponds to #1) .

Oh, and it has a hole running right down the middle.

I'll try to upload some more images in another post.
from ErkDemon: The Other Side of Science http://erkdemon.blogspot.com
]]> http://write-club.net/2009/12/the-tetrahedral-triple-helix/feed/ 0