File:PSM V19 D340 Lampblack cell in an experimental receiver.jpg
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DescriptionPSM V19 D340 Lampblack cell in an experimental receiver.jpg | Lampblack cell in an experimental receiver | |||||
Date | ||||||
Source | Popular Science Monthly Volume 19 | |||||
Author | Unknown authorUnknown author | |||||
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current | 08:43, 24 March 2014 | 1,043 × 1,409 (88 KB) | Ineuw (talk | contribs) | Cleaned image & improved contrast | |
04:06, 21 August 2010 | 996 × 1,399 (79 KB) | Ineuw (talk | contribs) | {{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 |
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