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Deskripsyon
English: A lodestone, a piece of the mineral magnetite that is a natural magnet, from 1921 electrical engineering book. The caption of the picture said: "Natural magnet attracting iron nails".
Petsa
Gigikanan Downloaded 2008-11-04 from Fred Anzley Annet (1921) Electrical Machinery: A practical study course on installation, operation, and maintenance, 1st Ed., McGraw-Hill, New York, p.11, fig.3 on Google Books
Tagsulat Fred Anzley Annet
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Public Domain in USA - published in USA prior to 1923

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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.

United States
United States
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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Lodestone, a natural magnet 🧲

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kasamtangan14:43, 3 Mayo 2021Thumbnail sa bersyon sa 14:43, 3 Mayo 2021532 × 668 (181 KB)MaterialscientistFFT
05:05, 22 Hunyo 2009Thumbnail sa bersyon sa 05:05, 22 Hunyo 2009532 × 668 (114 KB)Chetvorno{{Information |Description={{en|A Wikipedia:lodestone, a stone that is a natural magnet, from 1922 electrical engineering book. The caption of the picture said: "Natural magnet attracting iron nails".}} |Source=Downloaded 2008-11-04 from [http:/

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