File:Tapping coherer.jpg

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Summary

Title / Description	Drawing of a tapping filings-coherer radio detector.
Author(s)	"The Electrical Experimenter" (Commercial publication.)
Copyright holder	"The Electrical Experimenter" (Commercial publication.) See below for license/re-use information.
Source	Appeared as an illustration in the article "Radio Detector Development" by H. Winfield Secor, published in the January, 1917 issue of "The Electrical Experimenter".
Date created	Estimated: [1917]
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"See licensing data below" (This illustration was published in the United States prior to January 1, 1923)

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:54, 11 March 2022		733 × 556 (80 KB)	Maintenance script (talk \| contribs)	== Summary == Importing file

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