File:Magnetic bubbles getting squeezed.png
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Summary
[edit]DescriptionMagnetic bubbles getting squeezed.png | This image shows how one kind of domain in the orthomagnetic sheet of magnetic bubble memory grows and the other shrinks, as an external magnetic field (the big magnet poles) is imposed on them. |
Date | |
Source | Self-made, using the Persistence of Vision Raytracer |
Author | Søren Peo Pedersen |
Permission (Reusing this file) |
GFDL-self |
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following license:
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. | ||
| ||
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 |
POV-Ray code
[edit]Below is the code for rendering the above image using the Persistence of Vision Raytracer:
/* ================================================ Magnetic domain bubbles, "squeezed down" in size ------------------------------------------------ Created by Søren Peo Pedersen - see my user page at http://da.wikipedia.org/wiki/Bruger:Peo ================================================ */ #declare MagnetFont="arialbd.ttf" // Font for the "N" and "S" nomenclature on magnets #declare NorthLtr="N"; // Letter to indicate north pole #declare SouthLtr="S"; // Letter to indicate south pole
#declare MagLayerUp=pigment { // Gradient with white gradient y // south pole side facing up color_map { [0.0 color rgb <1,0,0>] [1.0 color rgb <1,1,1>] } scale .000602 translate -.000301 }
#declare MagLayerDn=pigment { // Gradient with red north gradient y // pole side facing up color_map { [0.0 color rgb <1,1,1>] [1.0 color rgb <1,0,0>] } scale .000602 translate -.000301 } box {<-4,-.3,-4>,<4,.3,4> // The orthomagnetic sheet itself pigment { bumps // "Random" pattern formed by the domains pigment_map { [0.0 MagLayerUp] // A majority of 0.7 x 100% = 70% of the [0.7 MagLayerUp] // surface has a south pole facing upwards, and [0.7 MagLayerDn] // a minority of 0.3 x 100% = 30% of the surface [1.0 MagLayerDn] // (the "bubbles") has north poles facing up. } scale <1,1000,1> // Stretch so boundaries seem } // orthogonal to the surface finish {ambient .5} // Softens the self-shadows } // Magnets to "squeeze" bubbles down in size: box {<-4,3.5,-4>,<4,30,4> // The big north pole above the sheet pigment { object { text {ttf MagnetFont,NorthLtr,3,0 // with the letter for "north" on it scale 10 translate <-3,4,-30> } pigment {color rgbt <1,0,0,.9>} // High degree of transparency (0.9) pigment {color rgbt <1,1,1,.9>} // to hint that the field is weak } } finish {ambient .5} } box {<-4,-79,-4>,<4,-4.5,4> // The big south pole below the sheet pigment { object { text {ttf MagnetFont,SouthLtr,3,0 // with the letter for "south" on it scale 10 translate <-3,-12,-30> } pigment {color rgbt <1,1,1,.9>} // High degree of transparency (0.9) pigment {color rgbt <1,0,0,.9>} // to hint that the field is weak } } finish {ambient .5} }
background {color rgb 1} // White background camera { // View it all ... location <8,5,-10> // ... from this location look_at <0,0,0> // ... looking towards this point up <0,4/3,0> right <1,0,0> // Force 4/3 "portrait" aspect ratio } light_source { // light source <-100,150,-120> // to illuminate color rgb 1 // the scene }
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 22:03, 13 December 2007 | 480 × 640 (30 KB) | Peo~commonswiki (talk | contribs) | {{Information |Description=This image shows how one kind of domain in the orthomagnetic sheet of magnetic bubble memory grows and the other shrinks, as an external magnetic field (the big magnet poles) is imposed on them. |Source=Self-made, using the Pers |
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