本图片使用POV-Ray创作.

我，本作品著作权人，释出本作品至公有领域。这适用于全世界。 在一些国家这可能不合法；如果是这样的话，那么： 我无条件地授予任何人以任何目的使用本作品的权利，除非这些条件是法律规定所必需的。

This image was created using POV-Ray for Windows, version 3.6. The image was rendered to an 1800 x 1800 square, using 0.3 anti-aliasing, and then cropped and compressed using pngcrush.

#include "colors.inc"

background { color White }

global_settings { assumed_gamma 1.0}

camera
  {
  location <0, 0, -25>
  right <1,0,0> up <0,1,0>
  look_at  <0, 0, 0>
  angle 5
  }

light_source
  {
  <0, 20, -50>
  color White
  area_light <5, 0, 0>, <0, 5, 0>, 10, 10  /* very slow, decrease 10 to 2 for experiments */
  adaptive 3
  }

#declare shiny = finish {
    ambient 0.15
    diffuse 0.85
    brilliance 2
    phong 0.25
    phong_size 7.5
    }

#declare r_tube = 0.07;
#declare sep = 1;
#declare R = 0.35;

torus
  {
  R, r_tube              // major and minor radius
  rotate -90*x      // so we can see it from the top
  translate <sep/2,0,0.1>
  pigment { color rgb <0,0,1> }
  finish {shiny}
  }

torus
  {
  R, r_tube              // major and minor radius
  rotate -90*x      // so we can see it from the top
  translate <-sep/2,0,0.1>
  pigment { color rgb <1,0,0> }
  finish {shiny}
  }

plane
  {
  <0,0,-1>, -0.33
  pigment { color White }
  finish
    {
    ambient 0.35
    diffuse 0.65
    }
  }