File:Split-flap display.jpg
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Summary
| Description |
English: Mechanism of a "split-flap" alarm clock, removed from its case. It displays the time digitally on flaps mounted on wheels. The inset shows the metal tab holding back the top flap. Each complete turn of a wheel advances the wheel on its left by one flap. The wheels are turned by an electric motor (visible in the back) synchronized to the oscillations of the AC current from the wall plug. Therefore, unlike later quartz digital clocks, this is a synchronous clock which is kept to the correct time by the 50/60 Hz AC power grid. The narrow numbered wheel and knobs on the left are the alarm mechanism.
Deutsch: Typische Fallblattanzeige in einem Uhrenradio |
| Date | |
| Source | Own work Foto und Fotomontage selbst erstellt |
| Author | Reinraum |
Deutsches Museum München 2010
Licensing
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
| Annotations | This image is annotated: View the annotations at Commons |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:57, 19 September 2010 | | 2,945 × 2,028 (3.98 MB) | Reinraum | scale |
| 21:52, 19 September 2010 |  | 3,101 × 2,028 (4.19 MB) | Reinraum | {{Information |Description={{en|1=Split-flap display}} {{de|1=Typische Fallblattanzeige in einem Uhrenradio}} |Source={{own}} Foto und Fotomontage selbst erstellt |Author=Reinraum |Date=19. September 2010 |Permission= |other_versions= }} |
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