File:Gold leaf electroscope 1869.png
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Original file (562 × 792 pixels, file size: 48 KB, MIME type: image/png)
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This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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Summary
| Description |
English: Drawing of a gold-leaf electroscope from around 1880s. This is an early electric charge detecting instrument. When an electrically charged object is touched to the brass top terminal, the charge is conducted to the delicate gold leaves. Since they have the same polarity charge they repel each other, and spread apart in a "V" shape. |
| Date | |
| Source | Downloaded from James Edward Henry Gordon (1889) A Physical Treatise on Electricity and Magnetism, 2nd Ed., Vol.1, D. Appleton & Co., New York, p.32, fig.9 on Google Books |
| Author | James Edward Henry Gordon |
| Permission (Reusing this file) |
Public domain - published in USA before 1923 |
Licensing
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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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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 | Dimensions | User | Comment | |
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| current | 13:01, 14 December 2007 | 562 × 792 (48 KB) | Chetvorno | {{Information |Description=Drawing of gold-leaf electroscope from around 1880s. |Source=Downloaded from [[http://books.google.com/books?hl=en&id=TN1pKNbiH94C&pg=PA James Edward Henry Gordon (1889) ''A Physical Treatise on Electricity and Magnetism, 2nd Ed |
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