File:Bell System 1877.jpg
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Summary
| DescriptionBell System 1877.jpg |
Français : Système Bell (1877), collection historique France Télécom, musée des télécommunications de Pleumeur-Bodou
English: Model of first telephone receiver/transmitter invented by US scientist Alexander Graham Bell in 1875, in the historical collection of the Museum of Telecommunications in Pleumeur-Bodou, France. The instruments on either side are models of the receiver (earphone) invented by Bell later.
English: Bell System (1877) |
| Date | first published on 2006-11-03 on commons |
| Source | image by myself |
| Author | (c) 2006 Zubro |
| Permission (Reusing this file) |
released under GFDL and CC-BY-SA |
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| This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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| This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:24, 3 November 2006 | 1,478 × 824 (205 KB) | File Upload Bot (Zubro) | == Description == {{Français}} Système Bell (1877), collection historique France Télécom, musée des télécommunications de Pleumeur-Bodou {{English}} Bell System (1877) {{information| |Description = |Source = image by myself |Date = first publis |
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Metadata
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| Camera manufacturer | Canon |
|---|---|
| Camera model | Canon DIGITAL IXUS |
| Exposure time | 1/30 sec (0.033333333333333) |
| F-number | f/7.1 |
| Date and time of data generation | 15:21, 25 July 2006 |
| Lens focal length | 5.40625 mm |
| Orientation | Normal |
| Horizontal resolution | 180 dpi |
| Vertical resolution | 180 dpi |
| File change date and time | 15:21, 25 July 2006 |
| Y and C positioning | Centered |
| Exif version | 2.1 |
| Date and time of digitizing | 15:21, 25 July 2006 |
| Image compression mode | 3 |
| Shutter speed | 4.9068908691406 |
| APEX aperture | 5.6556396484375 |
| Exposure bias | 0 |
| Maximum land aperture | 2.9708557128906 APEX (f/2.8) |
| Subject distance | 0.161 meters |
| Metering mode | Center weighted average |
| Flash | Flash fired |
| Color space | sRGB |
| Focal plane X resolution | 7,766.9902912621 |
| Focal plane Y resolution | 7,741.935483871 |
| Focal plane resolution unit | inches |
| Sensing method | One-chip color area sensor |
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