File:Blue 7 1 Knot.png
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Summary[edit]
DescriptionBlue 7 1 Knot.png |
English: A 7₁ knot. |
Source | Own work |
Author | Jim.belk |
Licensing[edit]
Public domainPublic domainfalsefalse |
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
Source[edit]
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.
#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 r_tube = 0.05; #declare num_steps = 70; #declare step_size = 1/num_steps; sphere_sweep { cubic_spline num_steps+3, #declare N = -1; #while(N <= num_steps + 1) #declare theta = 2 * pi * N * step_size; <0.3*( (7/3)*sin(2*theta)*(1+(2/7)*cos(7*theta)) ), 0.3*( (7/3)*cos(2*theta)*(1+(2/7)*cos(7*theta)) ), 0.2*sin(7*theta)>, r_tube /* uses a hypotrochoid */ #declare N = N + 1; #end pigment { color rgb <0,0.25,1> } finish { ambient 0.15 diffuse 0.85 brilliance 2 phong 0.3 phong_size 10 } } plane { <0,0,-1>, -0.25 pigment { color White } finish { ambient 0.35 diffuse 0.65 } }
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:55, 5 July 2015 | 1,800 × 1,800 (520 KB) | Cmdrjameson (talk | contribs) | Compressed with pngout. Reduced by 503kB (49% decrease). | |
17:56, 22 March 2010 | 1,800 × 1,800 (1,023 KB) | Jim.belk (talk | contribs) | {{Information |Description={{en|1=A 7₁ knot.}} |Source={{own}} |Author=Jim.belk |Date= |Permission= |other_versions= }} Category:Knots (knot theory) Category:Images including source code in their description |
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