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Summary
| Description |
English: Photo of a gold-leaf electroscope from around 1900. This is a homemade one for amateur electricity experiments. The two grounded strips of metal foil on the inside of the jar flanking the gold leaves are a safety measure. If an excessive charge is placed on the electroscope, the gold leaves will touch the foil and discharge, rather than tearing. |
| Date | |
| Source | Downloaded from Harry Edwin Hadley (1901) Magnetism and Electricity for Beginners, MacMillan, New York, p.132, fig.95 on Google Books |
| Author | Harry Edwin Hadley |
| Permission (Reusing this file) |
Public domain - published in the 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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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:28, 14 December 2007 | | 512 × 666 (41 KB) | Chetvorno | {{Information |Description=Photo of a gold-leaf electroscope from around 1900. This is a homemade one for amateur electricity experiments. |Source=Downloaded from [http://books.google.com/books?id=xZgIAAAAIAAJ&pg=PA132 Harry Edwin Hadley (1901) ''Magneti |
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