![This image is not present because of licensing restrictions](../../images/1x1white.gif) |
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Summary
Description |
English: Magnetic dipole field around a small current loop.
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Date |
September 2010 |
Source |
Own work
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This plot was created with VectorFieldPlot |
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Author |
Geek3 |
✓ The source code of this SVG is valid.
Source Code
The image was generated with VectorFieldPlot 1.2
VectorFieldPlot source code |
# paste this code at the end of VectorFieldPlot 1.2
doc = FieldplotDocument('VFPt_dipole_magnetic2',
commons=True, width=600, height=600)
field = Field({'ringcurrents':[[0,0,0,0.5,1]]})
n = 12
for i in range(n):
a = 4.2 * ((i + 0.5) / n - 0.5)
line = FieldLine(field, [0, 0.5 * (exp(a)-1) / (exp(a)+1)],
directions='both')
doc.draw_line(line, linewidth=2.4,
arrows_style={'dist':1.7, 'scale':1.1, 'max_arrows':4})
# draw ring
symb = doc.draw_object('g', {'id':'ring',
'transform':'scale({0},{0})'.format(1.0/doc.unit)})
defs = doc.draw_object('defs', {}, group=symb)
spot = doc.draw_object('radialGradient', {'id':'light_spot',
'cx':'0.65', 'cy':'0.7', 'r':'0.75'}, group=defs)
for col, of in [['#fff', '0'], ['#ddd', '0.15'],
['#aaa', '0.5'], ['#444', '1']]:
doc.draw_object('stop', {'stop-colour':col, 'offset':of}, group=spot)
doc.draw_object('path',
{'d':'M -20.5,50 V -50 A 20.5,20.5 0 0,1 20.5,-50 V 50 A 20.5,20.5 0 0,1 -20.5,50 Z',
'style':'fill:url(#light_spot); stroke:#000000; stroke-width:3'},
group=symb)
doc.write()
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Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
![GNU head](../../images/0/30.png) |
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
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You may select the license of your choice.
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File usage
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