File:PSM V19 D340 Lampblack cell in an experimental receiver.jpg

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Description Lampblack cell in an experimental receiver
Date
Source Popular Science Monthly Volume 19
Author Unknown authorUnknown author
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Date/TimeThumbnailDimensionsUserComment
current08:43, 24 March 2014Thumbnail for version as of 08:43, 24 March 20141,043 × 1,409 (88 KB)IneuwCleaned image & improved contrast
04:06, 21 August 2010Thumbnail for version as of 04:06, 21 August 2010996 × 1,399 (79 KB)Ineuw{{Information |Description = Lampblack cell in an experimental receiver |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_19.djvu/340 |Date = 1881 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category