File:VFPt helmholtz coil2.svg
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Size of this PNG preview of this SVG file: 600 × 600 pixels. Other resolutions: 240 × 240 pixels | 480 × 480 pixels | 768 × 768 pixels | 1,024 × 1,024 pixels | 2,048 × 2,048 pixels.
Original file (SVG file, nominally 600 × 600 pixels, file size: 36 KB)
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Summary[edit]
| Description |
English: Magnetic field around helmholtz coil consisting of two round current loops width their distance matching their radius. The symmetry axis is vertical and the image shows mostly the central region. |
| Date | |
| Source | Own work |
| Author | Geek3 |
| Other versions |
|
| SVG development |  This plot was created with VectorFieldPlot. |
| Source code | Python code# paste this code at the end of VectorFieldPlot 1.3
# https://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot
doc = FieldplotDocument('VFPt_helmholtz_coil2',
width=600, height=600, unit=100, commons=True)
field = Field({'ringcurrents':[[0,-1,pi/2,2,1]], [0,1,pi/2,2,1]})
startpath = lambda t: sc.array([2*sin(t*pi/2), 1-cos(t*pi/2)])
dstartpath = lambda t: (startpath(t+1e-6) - startpath(t-1e-6)) / 2e-6
FieldSum = lambda t0, t1: ig.quad(lambda t:
sc.cross(field.F(startpath(t)), dstartpath(t)), t0, t1)[0]
t0, t1 = -0.85, 0.85
Ftotal = FieldSum(t0, t1)
def startpos(s):
t = op.brentq(lambda t: FieldSum(t0, t) / Ftotal - s, t0, t1)
return startpath(t)
nl = 18
for i in range(nl):
s = i / (nl - 1.0)
line = FieldLine(field, startpos(s), directions='both')
doc.draw_line(line, arrows_style={'dist':1.5, 'min_arrows':1,
'max_arrows':3})
if i < 2 or nl - i <= 2:
line = FieldLine(field, [startpos(s)[0], -startpos(s)[1]],
directions='both')
doc.draw_line(line, arrows_style={'dist':1.5, 'min_arrows':1,
'max_arrows':3})
doc.draw_currents(field, scale=1.3)
doc.write()
|
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 3.0 Unported 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 | 22:17, 12 March 2017 | | 600 × 600 (36 KB) | Geek3 (talk | contribs) | == {{int:filedesc}} == {{Information |description={{en|1=Magnetic field around helmholtz coil consisting of two round current loops width their distance matching their radius. The symmetry axis is vertical and the image shows mos... |
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