File:VFPt dipole magnetic2.svg

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Summary

Description

English: Magnetic dipole field around a small current loop.

Date

September 2010

Source

Own work

This plot was created with VectorFieldPlot

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()

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()

Licensing

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.

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share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.

CC-BY-SA-3.0 truetrue

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File usage

The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Short title

VFPt_dipole_magnetic2

Image title

VFPt_dipole_magnetic2

created with VectorFieldPlot 1.1 http://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot

about: http://commons.wikimedia.org/wiki/File:VFPt_dipole_magnetic2.svg rights: GNU Free Documentation license,

       Creative Commons Attribution ShareAlike license

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