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File:Bowl Shaped Magnetic Levitation.png

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Bowl_Shaped_Magnetic_Levitation.png (414 × 547 pixels, file size: 79 KB, MIME type: image/png)

Summary

Description
English: I, User:Osndok, created this file to aid the discussion on the Magnetic levitation talk page.

I found a strange video[1] that appears to show magnetic levitation in contradiction to my understanding of Earshaw's theorem. This diagram intends to illustrate what is going on (e.g. for those who don't want to wade through the video, but might be able to see "what's wrong").

My best guess at the moment is that either:

  1. Earnshaw's theorem does not apply to masses with "holes" in them, or
  2. the low center of gravity restricts the degrees of freedom usually present for instability.
Note that the low-hanging weight is for illustration only, the configuration in the video does not actually have such an extension (but I think the weight of the magnets themselves act this way).
Source Own work
Author User:Osndok

Licensing

Public domain
This image has been released into the public domain by its creator and original copyright holder. This applies worldwide. As such you are entirely free to reproduce it, create derivative works, or make commercial use of it as you see fit, without any requirement to give the creator credit. However, as a courtesy, a link back to Wikipedia (http://www.wikipedia.org/) would be appreciated.

In case this is not legally possible:

The copyright holder grants any entity the right to use this work for any purpose, without any conditions, unless such conditions are required by law. However, as a courtesy, a link back to Wikipedia (http://www.wikipedia.org/) would be appreciated.

Original upload log

Transferred from en.wikipedia to Commons using For the Common Good.

The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
18:08, 20 October 2015 414 × 547 (81,071 bytes) w:en:Osndok (talk | contribs) Additional psuedo-3d lines should show the outline of the 'bowls' better.
16:39, 19 October 2015 402 × 499 (47,296 bytes) w:en:Osndok (talk | contribs) As discussed on the [[Magnetic Levitation]] talk page, I found a strange video[https://www.youtube.com/watch?v=9EPlyiW-xGI&t=25m15s] that appears to show magnetic levitation in contradiction to my understanding of Earshaw's theorem. This diagram intends...

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media type

image/png

checksum

03eff2d5b5ace7b7dba51786e7fa51c47ab2d75b

determination method or standard: SHA-1

data size

81,071 byte

height

547 pixel

width

414 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current02:07, 2 February 2016Thumbnail for version as of 02:07, 2 February 2016414 × 547 (79 KB)OgreBot(BOT): Reverting to most recent version before archival
02:07, 2 February 2016Thumbnail for version as of 02:07, 2 February 2016402 × 499 (46 KB)OgreBot(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2015-10-19 16:39:09 by Osndok
03:08, 1 February 2016Thumbnail for version as of 03:08, 1 February 2016414 × 547 (79 KB)TerraCodesTransferred from en.wikipedia: see original upload log above

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