reminds me of the exhibits at the Saint Louis Arch http://www.dzre.com/alex/slarch/ http://www.dzre.com/alex/slarch/ and http://www.sciencefriday.com/video/04/2

reminds me of the exhibits at the Saint Louis Arch http://www.dzre.com/alex/slarch/ http://www.dzre.com/alex/slarch/ and http://www.sciencefriday.com/video/04/23/2009/how-the-arch-got-its-shape.html http://www.sciencefriday.com/video/04/23/2009/how-the-arch-g...