File:Bell System 1877.jpg
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[edit]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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[edit]I, the copyright holder of this work, hereby publish it under the following licenses:
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
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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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This file is licensed under the Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic and 1.0 Generic license.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:24, 3 November 2006 | ![]() | 1,478 × 824 (205 KB) | File Upload Bot (Zubro) (talk | contribs) | == 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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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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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 |
APEX shutter speed | 4.9068908691406 |
APEX aperture | 5.6556396484375 |
APEX 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 |