File:Electrophorus cutaway.png

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Electrophorus_cutaway.png ‎(324 × 205 pixels, file size: 3 KB, MIME type: image/png)

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Summary

Description Drawing of an electrophorus from around 1900, showing electric charges. The electrophorus is a static electricity generator invented by Johan Carl Wilcke around 1762. The negative charge on the lower dielectric induces a separation of charge in the upper metal plate, with positive charges attracted to its lower surface and negative charges repelled to its upper surface. The upper surface of the plate is then momentarily grounded, draining off the negative charge, leaving the plate with a positive charge. Alterations: Removed captions and part labels, moved upper and lower plates farther apart to make it clearer.
Date
Source Downloaded on 2007-12-25 from Solomon Solis Cohen (1902) A System of Physiologic Therapeutics, Vol. 1, Book 1 - Electrophysics, P. Blackiston's Son & Co., Philadelphia on Google Books
Author Solomon Solis Cohen
Permission
(Reusing this file)		 Public domain - published in USA before 1923
File:Electrophorus schematic.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
File:Electrophorus cutaway.png → File:Electrophorus schematic.svg
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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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File history

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Date/TimeThumbnailDimensionsUserComment
current04:45, 28 December 2007Thumbnail for version as of 04:45, 28 December 2007324 × 205 (3 KB)wikimediacommons>Chetvorno{{Information |Description=Section drawing of an electrophorus from around 1900, showing electric charges. The electrophorus is a static electricity generator invented by Johan Carl Wilcke and Alessandro Volta around 1775. |Source=Downloaded on 2007-12-

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