File:VFPt maxwell coil.svg
Original file (SVG file, nominally 800 × 600 pixels, file size: 43 KB)
This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.
Summary
DescriptionVFPt maxwell coil.svg |
English: Magnetic field around a maxwell coil consisting of three round current loops symetric around their common axis. This arrangement removes variations in the magnetic field, up to its 6th-order derivative with respect to the center. The radius of the small loops is times the radius of the big coils. The axial distance of the small loops from the big loop is times the radius of the big coils. The current through the small loops is 49/64 times the current through the big loop. |
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Date | |||
Source | Own work | ||
Author | Geek3 | ||
SVG development InfoField | This W3C-invalid vector image was created with Inkscape, or with something else.
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Source code InfoField | SVG code# paste this code at the end of VectorFieldPlot 1.0
doc = FieldplotDocument('VFPt_maxwell_coil', width=800, height=600, commons=True)
field = Field({'ringcurrents':[[0,0,0,sqrt(1.75),1],
[-sqrt(0.75),0,0,1,49./64.], [sqrt(0.75),0,0,1,49./64.]]})
y0 = sqrt(1.75) - 0.14
s = ig.quad(lambda y: field.F([0.0, y])[0], -y0, y0)[0]
n = 17
for i in range(n):
a = i / (n - 1.)
y = op.brentq(lambda y1: ig.quad(lambda y: field.F([0.0, y])[0], -y0, y1)[0] - a * s, -y0, y0)
if i == 2 or i == n - 3: of = 0.0
else: of = 0.5
line = FieldLine(field, [0.0, y], directions='both', maxr=20.0)
doc.draw_line(line, arrows_style={'dist':1.9, 'offsets':[0+of, 0.5, 0.5, 1-of]})
doc.draw_currents(Field({'ringcurrents':[ [-sqrt(0.75),0,0,1,49./64.],
[sqrt(0.75),0,0,1,49./64.]]}), scale=sqrt(49./64.))
doc.draw_currents(Field({'ringcurrents':[ [0,0,0,sqrt(1.75),1]]}))
doc.write()
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Licensing
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 |
- 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.
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Items portrayed in this file
depicts
May 2010
image/svg+xml
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 22:42, 13 March 2018 | 800 × 600 (43 KB) | wikimediacommons>Geek3 | smaller symbols for smaller currents |
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