File:Electrolytic detector.jpg

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Summary

DescriptionElectrolytic detector.jpg	English: An electrolytic detector, a primitive device used to demodulate radio waves in early radio receivers around the turn of the century. It consists of a metal cup containing a dilute solution of nitric acid and a fine platinum wire on an adjustable arm with the tip dipping in the acid.
Date	1912
Source	Retrieved 9 November 2013 from Harry Winfield Secor, Sidney Gernsback, Austin Celestin Lescarboura (1912) Wireless Course in Twenty Lessons, Electro Importing Co., New York, p. 79, fig. 10 on Google Books
Author	Unknown authorUnknown author

Licensing

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
	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.