File:PSM V24 D590 A home made microphone.jpg

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Description A home made microphone
Date between 1883 and 1884
date QS:P,+1883-00-00T00:00:00Z/8,P1319,+1883-00-00T00:00:00Z/9,P1326,+1884-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 24
Author Unknown authorUnknown author
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current15:34, 1 September 2010Thumbnail for version as of 15:34, 1 September 20101,870 × 1,265 (387 KB)Ineuw{{Information |Description = A home made microphone |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_24.djvu/590 |Date = 1883-1884 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular Scienc

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