Interesting how they pick the colors for the Saint Petersberg (as well as the Los Angeles) Metro: Red, as we know, is the principle primary color from the low...
1598
Polytopia@yahoogroups...
Sep 27, 2009 12:41 pm
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /Craig's...
1599
cdsgraphics1952
Sep 27, 2009 12:48 pm
Using a lineal spectrum as a terrain heightfield and again as the color map overlay provides a clue to the saturation levels of the spectrum as a file that I...
1600
Alan Michelson
a.michelson
Sep 29, 2009 5:09 pm
... From: cdsgraphics1952 <cdsgraphics@...> Subject: [Polytopia] Re: three stooges To: Polytopia@yahoogroups.com Date: Sunday, September 27, 2009, 5:48...
1601
Alan M
a.michelson
Sep 30, 2009 10:50 pm
... This is explained in http://en.wikipedia.org/wiki/Infinite_skew_polyhedron and http://www.superliminal.com/geometry/infinite/infinite.htm...
1602
Alan Michelson
a.michelson
Oct 1, 2009 2:21 am
... From: Alan Michelson <a.michelson@...> Subject: Re: [Polytopia] Re: three peaks & three valleys [2 Attachments] To: Polytopia@yahoogroups.com Date:...
1603
Polytopia@yahoogroups...
Oct 1, 2009 11:16 am
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the Polytopia group. File : /Craig's...
1604
cdsgraphics1952
Oct 1, 2009 11:34 am
I think it would resemble a flattened Monkey Saddle if there were only 4 colors, but the spectrum has 6 dominate (3 peaks & 3 Valleys) as my...
1605
Alan M
a.michelson
Oct 1, 2009 5:31 pm
... 4 colors, but the spectrum has 6 dominate (3 peaks & 3 Valleys) as my Radial_Spectrum_HeightField file illustrates. If there were only 4 colors, then that...
1606
Alan M
a.michelson
Oct 5, 2009 3:21 am
... Actually, I'm talking about leveling the color field flat, so that the average value of the three colors is around 50% (between black and white), not about...
1607
cdsgraphics1952
Oct 5, 2009 11:00 am
You are right about the Monkey Saddle, though I tended to see it as more as a square version of the Calgary Saddle Dome that appeared to have only four...
1608
Alan Michelson
a.michelson
Oct 5, 2009 7:22 pm
I see what you mean: Here's a picture of a hyperbolic paraboloid within a tetrahedral wireframe; in other words, a skew quadrilateral. ... From:...
... From: Alan Michelson <a.michelson@...> Subject: Re: [Polytopia] Re: peaks & valleys To: Polytopia@yahoogroups.com Date: Monday, October 5, 2009,...
1611
jjkostick
Oct 14, 2009 1:19 pm
For those in the eastern PA area, the Math Midway will be traveling to Allentown, PA at the end of the week. The Math Midway is a carnival-style traveling...
1612
Alan Michelson
a.michelson
Oct 15, 2009 4:51 am
I have the wavy color wheel according to the red-green-blue model, and I also have the flattened color wheel according to how we perceive the color spectrum. ...
This fan page showcases a cool multi-dimensional construction toy which glows in the dark - http://www.facebook.com/astrologix . Can be used to build shapes...
1615
Alan M
a.michelson
Dec 11, 2009 6:33 pm
Astro Logix <http://www.astro-logix.com/> An evolutionary new construction toy. http://www.astro-logix.com/ <http://www.astro-logix.com/> ... which glows in...
1616
roopak vaidya
roopak.vaidya
Dec 12, 2009 1:26 pm
The astrologix seems like an excellent not-just-a-toy. However, at 60$ seems grossly over-priced. Â ________________________________ From: robstrange66...
1617
FreeManInParis
mitchpowell2
Dec 15, 2009 6:54 pm
Hi everyone - I just thought I'd let you know I took my passion for designing patterns on triangular grids mapped across an icosahedral template, and I turned...
1618
Alan M
a.michelson
Dec 29, 2009 3:39 am
Wow! How about that! Little icosahedra <http://free-craft-downloads.com/> on your Christmas Tree! I bet that anyone can make the templates ...
1619
FreeManInParis
mitchpowell2
Dec 30, 2009 12:01 am
You're being facetious, aren't you?...
1620
Alan Michelson
a.michelson
Dec 31, 2009 12:38 am
Without making fun of the "little" icosahedra, (I'd rather hang BIG icosahedra on the tree.) I have always liked geometric stuff as decorations. (See the...
1621
Burt Clawson
wildstar2002
Dec 31, 2009 4:39 am
i think those icosahedral ornaments are very cool. Here's a paper ornament I built about four years ago - a small stellated dodecahedron. Paper, razor...
1622
Alan M
a.michelson
Jan 7, 2010 5:53 am
... Just look at the http://en.wikipedia.org/wiki/Natural_Color_System ... Which you can build from http://www.adrianbruce.com/maths/nets/tetrahedron_net.htm...
1623
occamsword
Feb 1, 2010 11:21 pm
I've created six slide shows at Youtube featuring new classes of polyhedra, including: Exploded, Lattice, Open and Crown polyhedra. You can find them by typing...
1624
jennifer kurtz
jenniyoungkurtz
Feb 2, 2010 12:19 am
Thank you for sharing! You made my little guy's month!!! He only got to watch one tonight before bed and was so thrilled that he got to rate it!  ...
1625
jxandar
Mar 18, 2010 9:28 pm
Chemists Influence Stem-Cell Development With Geometry http://www.sciencedaily.com/releases/2010/03/100317162000.htm ...
1626
jennifer kurtz
jenniyoungkurtz
Mar 18, 2010 11:27 pm
Have you found this site?  http://chemistry.ctrl.ucla.edu/crmr/ Not exactly what you were wanting but worth looking at if you haven't yet.  Peace~ Jenn ...
