File:VFPt barker3 coil.svg
![File:VFPt barker3 coil.svg](https://upload.wikimedia.org/wikipedia/commons/thumb/5/5b/VFPt_barker3_coil.svg/800px-VFPt_barker3_coil.svg.png?20180313202411)
Original file (SVG file, nominally 800 × 600 pixels, file size: 50 KB)
Captions
Captions
Summary
[edit]DescriptionVFPt barker3 coil.svg |
English: Magnetic field around a three-loop Barker coil[1] consisting of three round current loops with identical radius The inner loop is placed around the center and carries the current |
Date | |
Source | Own work |
Author | Geek3 |
SVG development InfoField | ![]() This plot was created with VectorFieldPlot. |
Source code InfoField | Python code# paste this code at the end of VectorFieldPlot 1.7
doc = FieldplotDocument('VFPt_barker3_coil', commons=True)
field = Field({'ringcurrents':[[-0.7601,0,0,1,1], [0,0,0,1,0.5315],
[0.7601,0,0,1,1]]})
y0 = 0.952
Fsum = ig.quad(lambda y: field.F([0., y])[0], -y0, y0)[0]
nlines = 16
ystart = [op.brentq(lambda ys: ig.quad(lambda y: field.F([0., y])[0],
-y0, ys)[0] / Fsum - (0.5+i)/nlines, -y0, y0) for i in range(nlines)]
for x0, y0 in [ [0, y] for y in ystart]:
line = FieldLine(field, [x0, y0], directions='both', maxr=10)
doc.draw_line(line, arrows_style={'dist':2,
'min_arrows':2, 'max_arrows':4, 'offsets':[0,0.5,0.5,1]})
for x, y in [ [-0.7601, -0.87], [0.7601, -0.87], [-0.7601, 0.87], [0.7601, 0.87] ]:
line = FieldLine(field, [x, y])
doc.draw_line(line, arrows_style={'min_arrows':1, 'offsets':[0.5,0.5,0.5,0.5]})
doc.draw_currents(Field({'ringcurrents':[[-0.7601,0,0,1,1], [0.7601,0,0,1,1]]}))
doc.draw_currents(Field({'ringcurrents':[[0,0,0,1,0.5315]]}), scale=sqrt(0.5315))
doc.write()
|
Licensing
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![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
![share alike](https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Cc-sa_white.svg/24px-Cc-sa_white.svg.png)
- 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.
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:24, 13 March 2018 | ![]() | 800 × 600 (50 KB) | Geek3 (talk | contribs) | User created page with UploadWizard |
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File usage on Commons
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Metadata
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Short title | VFPt_barker3_coil |
---|---|
Image title | VFPt_barker3_coil
created with VectorFieldPlot 1.7 http://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot about: http://commons.wikimedia.org/wiki/File:VFPt_barker3_coil.svg rights: Creative Commons Attribution ShareAlike 4.0 |
Width | 800 |
Height | 600 |