File:Induction coil cutaway.jpg
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Summary edit
DescriptionInduction coil cutaway.jpg |
English: Drawing of an induction coil from a 1920 book on radio apparatus, with the outer surfaces drawn transparent, to show the construction. |
Date | |
Source | Downloaded from Harry Winfield Secor (1920) The How and Why of Radio Apparatus, 1st Ed., Experimenter Publishing Co., New York, p.5 on Google Books |
Author | Harry Winfield Secor |
Permission (Reusing this file) |
Public domain in USA - published in USA before 1923 |
Licensing edit
Public domainPublic domainfalsefalse |
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.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:18, 28 September 2009 | 775 × 688 (363 KB) | DrJunge (talk | contribs) | denoised, though not despeckled | |
11:58, 26 December 2008 | 775 × 688 (202 KB) | Chetvorno (talk | contribs) | {{Information |Description={{en|1=Drawing of an Wikipedia:induction coil from a 1920 radio book, with the outer surfaces drawn transparent, to show the construction. }} |Source=Downloaded from [http://books.google.com/books?id=wxZLAAAAMAAJ&pg=PA5 H |
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Orientation | Normal |
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Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 18:18, 28 September 2009 |
Color space | sRGB |
Image width | 775 px |
Image height | 688 px |
Date and time of digitizing | 20:18, 28 September 2009 |
Date metadata was last modified | 20:18, 28 September 2009 |