File:NTM cathode ray tubers Kr Birkeland 1890s IMG 0891.JPG
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Size of this preview: 487 × 599 pixels. Other resolutions: 195 × 240 pixels | 390 × 480 pixels | 624 × 768 pixels | 832 × 1,024 pixels | 1,664 × 2,048 pixels | 3,120 × 3,840 pixels.
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| Description |
English: Cathode ray tubers developed and managed by Kristian Birkeland in the 1890s, at the University of Oslo. Exibit at the Norwegian Technical Museum in Oslo. |
| Date | |
| Source | Own work |
| Author | Bjoertvedt |
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I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:00, 18 May 2016 | | 3,120 × 3,840 (2.16 MB) | SteinsplitterBot (talk | contribs) | Bot: Image rotated by 90° (EXIF-Orientation set from 6 to 1, rotated 180°) |
| 21:46, 20 November 2014 |  | 3,845 × 3,126 (2.17 MB) | Bjoertvedt (talk | contribs) | User created page with UploadWizard |
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