File:VFPt solenoid-field-animation.gif
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VFPt_solenoid-field-animation.gif (320 × 280 pixels, file size: 283 KB, MIME type: image/gif, looped, 40 frames, 3.9 s)
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Summary
[edit]DescriptionVFPt solenoid-field-animation.gif |
English: Solenoid fieldlines animation. A transformation from a circular current loop to an elongated ideal solenoid is shown. |
Date | |
Source | Own work |
Author | Geek3 |
GIF development InfoField | This plot was created with VectorFieldPlot. |
Source code InfoField | Python code# paste this code at the end of VectorFieldPlot 2.5
nframes = 40
L0 = 1.0
R = 0.4
nlines = 12
width = 320
height = 280
for iframe in range(nframes):
doc = FieldplotDocument('VFPt_solenoid-field-animation_{:03d}'.format(iframe),
width=width, height=height, commons=True)
if iframe < nframes / 2:
l = L0 * iframe / (nframes/2.)
else:
l = L0 * (2. - iframe / (nframes/2.))
print l
if l <= 0.:
field = Field({'ringcurrents':[[0, 0, 0, R, 1]]})
else:
field = Field({'coils':[[0, 0, 0, R, l, 1]]})
def f_arrows(xy):
return xy[0] * (sc.hypot(xy[0]/1.2, xy[1]/1.45) - 1.)
def f_cond(xy):
return fabs(xy[1]) > R or fabs(xy[0]) > 1e-6
for il in range(nlines):
a = (-1 + 2 * (0.5 + il) / nlines) * R
line = FieldLine(field, [0, a], directions='both', maxr=7.)
doc.draw_line(line, arrows_style={'at_potentials':[0.],
'potential':f_arrows, 'condition_func':f_cond})
doc.write()
|
for i in *.svg; do rsvg -w 320 -h 280 $i $(echo $i | sed s/svg/png/) && convert -scale 320x280 $(echo $i | sed s/svg/png/) $(echo $i | sed s/svg/gif/); done gifsicle -d5 -l0 --colors 16 --comment "https://commons.wikimedia.org/wiki/File:VFPt_solenoid-field-animation.gif" VFPt*.gif > animation.gif gifsicle -b animation.gif -d100 "#0" -d5 "#1-19" -d100 "#20" -d5 "#21-39" rm VFPt*.png VFPt*.gif
Licensing
[edit]I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 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.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 16:41, 4 January 2020 | 320 × 280 (283 KB) | Geek3 (talk | contribs) | User created page with UploadWizard |
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GIF file comment | https://commons.wikimedia.org/wiki/File:VFPt_dipole_animation_magnetic.gif |
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