This is a Quality image. Click here for more information.

File:VFPt flat cylinder magnet potential.svg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file (SVG file, nominally 800 × 800 pixels, file size: 159 KB)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
English: Drawing of a homogeneously magnetized flat cylindrical magnet with exactly computed magnetic field lines. The cylinder has the proportions R/L=2. The magnetic north pole is aligned on top and the magnetic south pole on the bottom, with magnetization along the cylinder axis. The magnetic scalar potential 𝜓 is shown in the background from positive (fuchsia) through zero (yellow) to negative (aqua). Note that the field lines follow the gradient of the scalar potential.
Date
Source Own work
Author Geek3
Other versions VFPt flat cylinder magnet.svg
SVG development
InfoField
 
The source code of this SVG is invalid due to VectorFieldPlot errors.
 
This W3C-invalid vector image was created with Inkscape, or with something else.

Quality image

This image has been assessed using the Quality image guidelines and is considered a Quality image.

العربية ∙ جازايرية ∙ беларуская ∙ беларуская (тарашкевіца) ∙ български ∙ বাংলা ∙ català ∙ čeština ∙ Cymraeg ∙ Deutsch ∙ Schweizer Hochdeutsch ∙ Zazaki ∙ Ελληνικά ∙ English ∙ Esperanto ∙ español ∙ eesti ∙ euskara ∙ فارسی ∙ suomi ∙ français ∙ galego ∙ עברית ∙ हिन्दी ∙ hrvatski ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ Jawa ∙ ქართული ∙ кыргызча ∙ 한국어 ∙ kurdî ∙ Latina ∙ Lëtzebuergesch ∙ lietuvių ∙ македонски ∙ മലയാളം ∙ मराठी ∙ Bahasa Melayu ∙ Nederlands ∙ Norfuk / Pitkern ∙ polski ∙ português ∙ português do Brasil ∙ qaraqalpaqsha ∙ rumantsch ∙ română ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ shqip ∙ српски / srpski ∙ svenska ∙ தமிழ் ∙ తెలుగు ∙ ไทย ∙ Tagalog ∙ toki pona ∙ Türkçe ∙ українська ∙ Oʻzbekcha ∙ vèneto ∙ Tiếng Việt ∙ 中文 ∙ 中文（简体） ∙ 中文（繁體） ∙ +/−

Source code
InfoField

SVG code

# paste this code at the end of VectorFieldPlot 2.2
# https://commons.wikimedia.org/wiki/User:Geek3/VectorFieldPlot
doc = FieldplotDocument('VFPt_flat_cylinder_magnet_potential',
    commons=True, width=800, height=800)

R, L2 = 2., 0.5
Bfield = Field({'coils':[ [0, 0, pi/2, R, L2 ,1]]})
Hfield = Field([ ['charged_disc', {'x0':-R, 'y0':-L2, 'x1':R, 'y1':-L2, 'Q':-1}],
                 ['charged_disc', {'x0':-R, 'y0':L2, 'x1':R, 'y1':L2, 'Q':1}] ])

doc.draw_magnets(Bfield)

# distribute field lines proportionally to the field strength at y=0
nlines = 22
startpoints = Startpath(Bfield, lambda t: sc.array([-R + 2. * R * t, 0.])
    ).npoints(nlines)

for i, p0 in enumerate(startpoints):
    line = FieldLine(Bfield, p0, directions='both', maxr=12)
    doc.draw_line(line, arrows_style={'dist':2.5, 'scale':1.3})

U0 = Hfield.V([0., L2 + 0.02])
doc.draw_scalar_field(func=Hfield.V, cmap=doc.cmap_AqYlFs, vmin=-U0, vmax=U0)

doc.write()

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
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.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current14:24, 21 September 2019Thumbnail for version as of 14:24, 21 September 2019800 × 800 (159 KB)Geek3 (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

File usage on other wikis

The following other wikis use this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:VFPt_flat_cylinder_magnet_potential.svg&oldid=648539940"