File:EB1911 Telegraph - Lord Kelvin's early Siphon Recorder.jpg
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Size of this preview: 487 × 599 pixels. Other resolutions: 195 × 240 pixels | 553 × 680 pixels.
Original file (553 × 680 pixels, file size: 122 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:04, 1 March 2016 | 553 × 680 (122 KB) | Library Guy | {{Information |Description ={{en|1=The original form of the siphon recorder (telegraphy instrument), for which Lord Kelvin obtained his first patent in 1867. The indicator consists of a light rectangular signal-coil of fine wire, suspended between... |
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