File:Dynamo - exaggerated rotating field distortion.png

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English: TBD

Public Domain source:

  • Hawkins Electrical Guide, Volume 1
  • Chapter 19: Theory of the Armature, Page 264
  • Copyright 1917 by Theo. Audel & Co.
  • Printed in the United States

Photographed, reduced to grayscale, and saved as a PNG by Dale Mahalko, Gilman, WI

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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
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Original upload log[edit]

The original description page was here. All following user names refer to en.wikipedia.
  • 2007-09-15 00:27 DMahalko 941×744× (743485 bytes) This is from the 1917 Hawkins Electrical Guide, page 264 of volume 1. Photographed, reduced to grayscale, and saved as a PNG by me. Dale Mahalko, Gilman, WI Source and copyright information: {| | [[Image:1917 Hawkins Electrical Guide - Titlepage.jpg|3

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Date/TimeThumbnailDimensionsUserComment
current21:53, 7 April 2021Thumbnail for version as of 21:53, 7 April 2021941 × 744 (433 KB)JohnVanVliet (talk | contribs)jpg artifact removal
13:06, 2 October 2016Thumbnail for version as of 13:06, 2 October 2016941 × 744 (407 KB)Cmdrjameson (talk | contribs)Compressed with pngout. Reduced by 318kB (43% decrease).
01:22, 18 November 2008Thumbnail for version as of 01:22, 18 November 2008941 × 744 (726 KB)File Upload Bot (Magnus Manske) (talk | contribs) {{BotMoveToCommons|en.wikipedia}} {{Information |Description={{en|TBD '''Public Domain''' source: * Hawkins Electrical Guide, Volume 1 * Chapter 19: Theory of the Armature, Page 264 * Copyright 1917 by Theo. Audel & Co. * Printed in the United States

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