File:Gold leaf electroscope 1869.png

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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

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Date/TimeThumbnailDimensionsUserComment
current01:31, 15 December 2007Thumbnail for version as of 01:31, 15 December 2007562 × 792 (48 KB)wikimediacommons>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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