File:Gold leaf electroscope 1869.png

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DescriptionGold leaf electroscope 1869.png	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	1889
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

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
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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:01, 14 December 2007		562 × 792 (48 KB)	Chetvorno (talk \| contribs)	{{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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