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File:Dynamo - exaggerated rotating field distortion.png

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Summary

Description
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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Licensing

Public domain
Public domain
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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This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

Original upload log

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

File history

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Date/TimeThumbnailDimensionsUserComment
current21:53, 7 April 2021Thumbnail for version as of 21:53, 7 April 2021941 × 744 (433 KB)JohnVanVlietjpg artifact removal
13:06, 2 October 2016Thumbnail for version as of 13:06, 2 October 2016941 × 744 (407 KB)CmdrjamesonCompressed 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) {{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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