Fil:Magnetic bubbles getting squeezed.png
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Fuld opløsning (480 × 640 billedpunkter, filstørrelse: 30 KB, MIME-type: image/png)
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Beskrivelse
BeskrivelseMagnetic 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. |
Dato | |
Kilde | Self-made, using the Persistence of Vision Raytracer |
Forfatter | Søren Peo Pedersen |
Tilladelse (Genbrug af denne fil) |
GFDL-self |
Licensering
Jeg, dette værks ophavsretsindehaver, publicerer hermed værket under den følgende licens:
Tilladelse er givet til at kopiere, distribuere og/eller ændre dette dokument under betingelserne i GNU Free Documentation License', Version 1.2 eller enhver senere version udgivet af Free Software Foundation; uden et invariant afsnit, ingen forsidetekster, og ingen bagsidetekst. En kopi af licensen er inkluderet i afsnittet GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
Denne fil er udgivet under Creative Commons Kreditering-Del på samme vilkår 3.0 Ikke-porteret-licensen | ||
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Denne licens blev tilføjet som en del af GFDL-licensopdateringen.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
POV-Ray code
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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Filhistorik
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Dato/tid | Miniaturebillede | Dimensioner | Bruger | Kommentar | |
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nuværende | 14. dec. 2007, 00:03 | 480 × 640 (30 KB) | Peo~commonswiki | {{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 |
Filanvendelse
Den følgende side bruger denne fil: