Original file (1,484 × 1,568 pixels, file size: 3.15 MB, MIME type: image/png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:41, 3 September 2011 | 1,484 × 1,568 (3.15 MB) | DrJunge | New scan, denoised, contrast adjusted. | |
15:46, 23 August 2011 | 848 × 861 (978 KB) | Wdwd | Higher resolution Taken from: Author: Uppenborn, Friedrich, 1859-1907 Title: Electric transformers -- History Online: http://www.archive.org/details/historyoftransfo00upperich | ||
07:49, 27 January 2011 | 653 × 652 (67 KB) | Chetvorno | {{Information |Description={{en|Drawing of the first Wikipedia:transformer, built by British scientist Michael Faraday in the 1830s. It consisted of an iron ring with two windings of insulated wire around it. Faraday attached one winding to a sensi |
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