Original file (788 × 676 pixels, file size: 91 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:48, 3 March 2010 | 788 × 676 (91 KB) | Chetvorno | {{Information |Description=Photo of a small spark-gap transmitter. |Source=Downloaded 2010-03-02 from [http://books.google.com/books?id=2MA3AAAAMAAJ&pg=PA19 Walter Wentworth Massie and Charles Reginald Underhill (1909) ''Wireless Telegraphy and Telep |
Original file (788 × 676 pixels, file size: 91 KB, MIME type: image/jpeg)
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 00:48, 3 March 2010 | 788 × 676 (91 KB) | Chetvorno | {{Information |Description=Photo of a small spark-gap transmitter. |Source=Downloaded 2010-03-02 from [http://books.google.com/books?id=2MA3AAAAMAAJ&pg=PA19 Walter Wentworth Massie and Charles Reginald Underhill (1909) ''Wireless Telegraphy and Telep |