File:Bubble memory guide patterns.png

Summary[edit]

Licensing[edit]

I, the copyright holder of this work, hereby publish it under the following licenses:

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
	You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
	This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

You may select the license of your choice.

POV-Ray code[edit]

Below is the code to render this image using the Persistence of Vision Raytracer:

/*
================================================
Two types of "guides" for magnetic bubble memory
------------------------------------------------
Created by Søren Peo Pedersen - see my user page
at http://da.wikipedia.org/wiki/Bruger:Peo
================================================
*/

box {<-4,-.3,.5>,<4,.3,3>     // Topmost sheet, using the T-I-T-I-T... style
  pigment {color rgb <1,1,1>}
  finish {ambient .5}
  }

box {<-4,-.3,-3>,<4,.3,-.5>   // Lower sheet, using the V-V-V-V-V... style
  pigment {color rgb <1,1,1>}
  finish {ambient .5}
  }

#declare Tguide=merge {   // Defines the shape of a T-shaped guide
  cylinder {<-.5,.3,.5>,<.5,.3,.5>,.03}
  sphere {<.5,.3,.5>,.03}
  cylinder {<.5,.3,.5>,<.5,.3,.3>,.03}
  sphere {<.5,.3,.3>,.03}
  cylinder {<.5,.3,.3>,<.1,.3,.3>,.03}  
  cylinder {<.1,.3,.3>,<.1,.3,-.5>,.03}
  sphere {<.1,.3,-.5>,.03}
  cylinder {<.1,.3,-.5>,<-.1,.3,-.5>,.03}
  sphere {<-.1,.3,-.5>,.03}
  cylinder {<-.1,.3,.3>,<-.1,.3,-.5>,.03}
  cylinder {<-.5,.3,.3>,<-.1,.3,.3>,.03}
  sphere {<-.5,.3,.3>,.03}
  cylinder {<-.5,.3,.5>,<-.5,.3,.3>,.03}  
  box {<-.5,0,.3>,<.5,.33,.5>}
  box {<-.1,0,-.5>,<.1,.33,.3>}
  pigment {color rgb .5}
  finish {ambient .5 phong 1}
  }

#declare Iguide=merge {   // Defines the shape of an I-shaped guide
  cylinder {<-.1,.3,.5>,<.1,.3,.5>,.03}
  sphere {<.1,.3,.5>,.03}
  cylinder {<.1,.3,.5>,<.1,.3,-.5>,.03}
  sphere {<.1,.3,-.5>,.03}
  cylinder {<.1,.3,-.5>,<-.1,.3,-.5>,.03}  
  sphere {<-.1,.3,-.5>,.03}
  cylinder {<-.1,.3,-.5>,<-.1,.3,.5>,.03}
  sphere {<-.1,.3,.5>,.03}
  box {<-.1,0,-.5>,<.1,.33,.5>}
  pigment {color rgb .5}
  finish {ambient .5 phong 1}
  }

#declare Vguide=merge {   // Defines the shape of a V-shaped guide
  sphere {<0,.3,0>,.03}
  cylinder {<0,.3,0>,<-1,.3,0>,.03}
  sphere {<-1,.3,0>,.03}
  cylinder {<-1,.3,0>,<-1,.3,.2>,.03}
  sphere {<-1,.3,.2>,.03}
  cylinder {<-1,.3,.2>,<-.2,.3,.2>,.03}
  sphere {<-.2,.3,.2>,.03}
  cylinder {<-.2,.3,.2>,<-.2,.3,1>,.03}
  sphere {<-.2,.3,1>,.03}
  cylinder {<-.2,.3,1>,<0,.3,1>,.03}
  sphere {<0,.3,1>,.03}
  cylinder {<0,.3,0>,<0,.3,1>,.03}
  box {<-1,.3,0>,<0,.33,.2>}
  box {<-.2,.3,.2>,<0,.33,1>}
  rotate <0,45,0>
  pigment {color rgb .5}
  finish {ambient .5 phong 1}
  }

#local Col=0;   // Loop to create rows of several stages for each guide type
#while (Col<4)
  #object {Tguide translate <1.6*Col-3.2,0,4-2.7>}  // T-shaped and
  #object {Iguide translate <1.6*Col-2.4,0,4-1.9>}  // I-shaped above,...
  #object {Vguide translate <1.6*Col-2.4,0,-2.2>}   // V-shaped ones below.
  #local Col=Col+1;
#end
#object {Tguide translate <3.2,0,4-2.7>}  // Add an extra T at the end

background {color rgb 1}  // White background color

camera {  // See the whole thing
  location <0,6.5,0>  // from straight above,
  look_at 0           // looking towards origo.
  }

light_source {      // Illumination
  <-100,150,-120>
  color rgb 1
  }