Re: three stooges
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 end of the spectrum.
- On the other (high) end of the spectrum is blue.
- Green is that other primary color somewhere in the middle of the spectrum. Stars that are around that color temperature tend to be white, not green, since the red and blue ends of the spectrum are also covered.
- Yellow seems to be the brightest color in the spectrum.
--- On Tue, 7/28/09, Alan Michelson <a.michelson@...> wrote:
From: Alan Michelson <a.michelson@...>
Subject: [Polytopia] Re: Having Some Code Fun in Tiling
Date: Tuesday, July 28, 2009, 7:18 PM
Those same colors were used on the St. Petersburg subway system in Russia, before the new Frunzensko-Primorsk aya Line. Notice the different combinations of subway lines at the transfer stations (like the edges of the tetrahedron) :
Kirovsko-Vyborgskay a Line Moskovsko-Petrograd skaya Line Nevsko-Vasileostrov skaya Line Pravoberezhnaya Line Kirovsko-Vyborgskay a Line Tekhnologichesky Institut Ploshchad Vosstaniya
Moskovsko-Petrograd skaya Line Tekhnologichesky Institut Nevskiy Prospekt
Nevsko-Vasileostrov skaya Line Ploshchad Vosstaniya
Ploshchad Alexandra Nevskogo Pravoberezhnaya Line Vladimirskaya
Ploshchad Alexandra Nevskogo
The new Frunzensko-Primorsk aya Line should intersect the other lines, giving more transfer combinations. (Like the edges of the pentachoron. )
--- In Polytopia@yahoogrou ps.com, "Michael Donovan" <michael1@...> wrote:
> Wonderful image,
> But the primary colors fit in another way, those four planes are combinations of the three primary. Looks like on of Robert Webbs animations from Stella
> ----- Original Message -----
> From: Alan Michelson
> To: Polytopia@yahoogrou ps.com
> Sent: Monday, September 13, 2004 2:57 PM
> Subject: Re: [Polytopia] Having Some Code Fun in Tiling
> rybo6 rybo6@... wrote:
> http://www.codefun. com/Geometry_ tile1.htm
> By the way, if you go to that web page, notice the tetrahedron at http://www.codefun. com/Images/ Geometry/ DodecTile/ image004. jpg
> Each vertice of the tetrahedron has a color that matches its opposite face. This is because if you were to truncate each vertice, you will get a plane that is parallel to and therefore matches its opposite face. You can see this in
> You could also see the red, yellow, green, blue color-coded planes in
> http://www.superlim inal.com/ geometry/ infinite/ stereo/
> The upper picture has truncated tetrahedra.
> The lower picture has truncated octahedra.
> These were built using Polydron. The colored hexagons are oriented according to the corresponding tetrahedron planes.
> You can see how this applies to the coloring problem in http://www.codefun. com/Images/ Geometry/ DodecTile/ image006. jpg
> Those same colors were used on the St. Petersburg subway system inor in this case, the possible [transfer] points from the combinations of intersecting [subway] lines.
> Russia, before the new Frunzensko-Primorsk aya Line. Notice the
> different combinations of subway lines at the transfer stations
> (Like the edges of the simplex joining the vertexes.)
--- In Polytopia@yahoogroups.com, "Alan M" wrote:
> --- In Polytopia@yahoogroups.com, Alan Michelson wrote:
> > The new Frunzensko-Primorsk aya Line should intersect the other
> > lines, giving more transfer combinations. (Like the edges of the
> > simplex joining the vertexes.)
> or in this case, the possible [transfer] points from the combinations of intersecting [subway] lines.
This is from: