File:VFPt Earths Magnetic Field Confusion.svg

Original file(SVG file, nominally 320 × 300 pixels, file size: 30 KB)

Summary

Description
English: Magnetic field around a spherical dipole magnet like the earth with a schematic dipole magnet drawn to its center.
Date
Source Own work
Author Geek3
Other versions

Earths Magnetic Field Confusion.svg

SVG development
VectorFieldPlot symbol.svg
This plot was created with VectorFieldPlot.

Python

VectorFieldPlot source code
# paste this code at the end of VectorFieldPlot 1.3
doc = FieldplotDocument('VFPt_Earths_Magnetic_Field_Confusion',
    commons=True, width=320, height=300, unit=15)
phi = radians(-70.0)
r = 1.0
field = Field({'coils':[[0, 0, phi, r, 2*r, 1]]})
n = 11
for i in range(n):
    a = -1.0 + 2.0 * (i + 0.5) / n
    line = FieldLine(field, [sin(phi)*a*r, -cos(phi)*a*r], directions='both', maxr=30)
    doc.draw_line(line, linewidth=2, arrows_style={'dist':10, 'scale':1.2,
        'max_arrows':2, 'min_arrows':1, 'offsets':[0.6, 0.5, 0.5, 0.6]})
doc.draw_object('circle', {'r':'6', 'cx':'0', 'cy':'0',
    'style':'fill:#add8e6; stroke:#0000ff; stroke-width:0.066667; opacity:0.4'})
doc.draw_magnets(field)
doc.write()

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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.
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Date/TimeThumbnailDimensionsUserComment
current20:59, 13 December 2010Thumbnail for version as of 20:59, 13 December 2010320 × 300 (30 KB)Geek3own work
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