File:GWR_Cooke_and_Wheatstone_double_needle_telegraph_instrument.jpg
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Summary
DescriptionGWR Cooke and Wheatstone double needle telegraph instrument.jpg |
English: An early double-needle telegraph of the Cooke and Wheatstone pattern used on the pioneering telegraph routes of the Great Western Railway in England. On display at the National Railway Museum. |
Date | |
Source | Own work |
Author | Geof Sheppard |
Licensing
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Items portrayed in this file
depicts
some value
13 April 2009
0.01666666666666666666 second
2.8
7.4 millimetre
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 17:38, 3 March 2024 | 1,366 × 1,366 (358 KB) | Geof Sheppard | Larger copy | |
07:04, 28 August 2009 | 768 × 768 (151 KB) | Geof Sheppard | {{Information |Description={{en|1=An early double-needle telegraph of the Cooke and Wheatstone pattern used on the pioneerimg telegraph routes of the Great Western Railway in England. On display at the National Railway Museum.}} |Source=Own work by uploa |
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Metadata
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Camera manufacturer | Canon |
---|---|
Camera model | Canon PowerShot G7 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/2.8 |
Date and time of data generation | 15:49, 13 April 2009 |
Lens focal length | 7.4 mm |
Orientation | Normal |
File change date and time | 15:49, 13 April 2009 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 15:49, 13 April 2009 |
Meaning of each component |
|
Image compression mode | 3 |
Shutter speed | 5.90625 |
APEX aperture | 2.96875 |
Exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing |
DateTimeOriginal subseconds | 00 |
DateTimeDigitized subseconds | 00 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 12,710.801393728 |
Focal plane Y resolution | 12,725.581395349 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |