VFPt_plus_thumb_potential+contour.svg
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Summary
| Description |
English:
Field of a positive point charge. Thumbnail version with potential shown as color from positive (fuchsia) to neutral (yellow) and equipotential lines.
|
| Date | |
| Source | Own work |
| Author | Geek3 |
| SVG development |
This plot was created with
VectorFieldPlot
.
|
| Source code |
Python code# paste this code at the end of VectorFieldPlot 3.1
# https://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot
doc = FieldplotDocument('VFPt_plus_thumb_potential+contour',
width=180, height=180, unit=30, commons=True)
field = Field([ ['monopole', {'x':0, 'y':0, 'Q':1}] ])
doc.draw_charges(field)
nlines = 16
for iline in range(nlines):
a = 2.0 * pi * (0.5 + iline) / nlines
line = FieldLine(field, [0, 0], start_v=[cos(a), sin(a)],
directions='forward', maxr=5)
doc.draw_line(line, linewidth=1.2, arrows_style={'dist':2, 'scale':1.8,
'max_arrows':1, 'offsets':{'start':1.05}, 'fixed_ends':{'start':True} })
U0 = field.V(sc.array([15./30., 0.]))
U1 = field.V(sc.array([14.65/30., 0.]))
doc.draw_scalar_field(func=field.V, cmap=doc.cmap_AqYlFs, vmin=-U0, vmax=U0)
doc.draw_contours(func=field.V, linewidth=0.7, linecolor='#444444',
levels=sc.linspace(0, U1, 12))
doc.write()
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Licensing
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
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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.