File:VFPt Solenoid correct3.svg

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Original file (SVG file, nominally 490 × 490 pixels, file size: 18 KB)

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Summary

[edit]
Description
English: Diagram of a solenoid and its magnetic field lines. The shape of all lines was computed according to the laws of electrodynamics.
Date
Source Own work
Author Geek3
Other versions
SVG development
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The SVG code is valid.
 
This plot was created with VectorFieldPlot.
Source code
InfoField

Python code

# paste this code at the end of VectorFieldPlot 3.3
# https://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot
doc = FieldplotDocument('VFPt_Solenoid_correct3',
    width=490, height=490, unit=100, commons=True, bg_color=None)
doc.arrow_geo = {'x_nock':-2, 'x_head':4, 'x_tail':-2, 'width':4}
R = 0.49
L = 1.96
field = Field([ ['coil', {'x':0, 'y':0, 'phi':0, 'R':R, 'Lhalf':L/2, 'I':1}] ])

for a in [-0.455, -0.385, -0.275, -0.165, -0.055, 0.055, 0.165, 0.275, 0.385, 0.455]:
    line = FieldLine(field, [0, a], directions='both', maxr=5)
    doc.draw_line(line, linewidth=1.0, arrows_style={'dist':1.5,
        'min_arrows':1, 'max_arrows':3, 'scale':2,
        'offsets':{'start':1, 'leave_image':0.25, 'enter_image':0.25, 'end':1} })

current_out = doc.draw_object('g', {'id':'current_out'}, group=doc._get_defs())
doc.draw_object('circle', {'cx':'0', 'cy':'0', 'r':12.5, 'fill':'#ffffff',
    'stroke':'#000000', 'stroke-width':3}, group=current_out)
doc.draw_object('circle', {'cx':'0', 'cy':'0', 'r':2.6, 'fill':'#000000',
    'stroke':'none'}, group=current_out)
current_in = doc.draw_object('g', {'id':'current_in'}, group=doc._get_defs())
doc.draw_object('circle', {'cx':'0', 'cy':'0', 'r':12.5, 'fill':'#ffffff',
    'stroke':'#000000', 'stroke-width':3}, group=current_in)
doc.draw_object('path', {'d':"M -8.8,-8.8 L 8.8,8.8 M -8.8,8.8 L 8.8,-8.8",
    'fill':'none', 'stroke':'#000000', 'stroke-width':3}, group=current_in)
for x in sc.linspace(-0.84, 0.84, 7):
    doc.draw_object('use', {'{http://www.w3.org/1999/xlink}href':'#current_out',
        'transform':"translate({:.3f},{:.3f}) scale(0.01, 0.01)".format(x, R)})
    doc.draw_object('use', {'{http://www.w3.org/1999/xlink}href':'#current_in',
        'transform':"translate({:.3f},{:.3f}) scale(0.01, 0.01)".format(x, -R)})

doc.write()

Licensing

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I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head 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.
w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 4.0 International 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.
You may select the license of your choice.

File history

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Date/TimeThumbnailDimensionsUserComment
current23:39, 22 January 2017Thumbnail for version as of 23:39, 22 January 2017490 × 490 (18 KB)Geek3 (talk | contribs)== {{int:filedesc}} == {{Information |description={{en|1=Diagram of a solenoid and its magnetic field lines. The shape of all lines is correct according to the laws of electrodynamics.}} |source={{own}} |author={{U|Geek3}} |date=2010-6 |other versions=...

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