File:Semaphore tower at the village of Babhani in Rohtas district, Bihar, India 17.jpg
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Summary
DescriptionSemaphore tower at the village of Babhani in Rohtas district, Bihar, India 17.jpg |
English: Semaphore tower at the village of Babhani in Rohtas district, Bihar, India.
The optical telegraph system in India was first suggested in the early 1800s for military use. A survey line was to be set up between Calcutta and Chunar in Uttar Pradesh, and towers built along the route at different stations including Howrah, Hooghly, Purulia, Hazaribagh and Gaya along the Old Benaras Road or Military Road (later replaced by G.T. Road). An account in Anton A. Huurdeman’s book Worldwide History of Telecommunications, states that there were as many as 45 semaphore towers built along the Calcutta-Chunar line. It is hard to say how many of those still remain, but about 18 have been located so far. After limited use, with mounting costs, the Calcutta-Chunar line was abandoned as a failed project in 1828. |
Date | |
Source | Own work |
Author | Amitabha Gupta |
Camera location | 25° 03′ 31.96″ N, 84° 00′ 29.71″ E | View this and other nearby images on: OpenStreetMap | 25.058877; 84.008252 |
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This file was generated using a equipment of West Bengal Wikimedians user Group.
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This file was uploaded as part of Wiki Explores Bihar - Phase I under Wiki Exploration Program, an initiative by West Bengal Wikimedians User Group.
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The production, editing or release of this file was supported by the West Bengal Wikimedians User Group.
To see other files made with the support of the user group, please check the category Supported by West Bengal Wikimedians User Group. English | Français | македонски | Українська | +/−
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Items portrayed in this file
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22 September 2023
25°3'31.957"N, 84°0'29.707"E
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 15:09, 28 January 2024 | 6,000 × 4,000 (15.66 MB) | Amitabha Gupta | Uploaded own work with UploadWizard |
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Metadata
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Camera manufacturer | SONY |
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Camera model | ILCE-7M3 |
Author | AMITABHA GUPTA |
Copyright holder | AMITABHA GUPTA |
Exposure time | 1/320 sec (0.003125) |
F Number | f/6.3 |
ISO speed rating | 500 |
Date and time of data generation | 16:29, 22 September 2023 |
Lens focal length | 24 mm |
Orientation | Normal |
Horizontal resolution | 350 dpi |
Vertical resolution | 350 dpi |
Software used | ILCE-7M3 v4.01 |
File change date and time | 16:29, 22 September 2023 |
White point chromaticity |
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Chromaticities of primarities |
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Color space transformation matrix coefficients |
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Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.31 |
Date and time of digitizing | 16:29, 22 September 2023 |
Meaning of each component |
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Image compression mode | 5 |
APEX brightness | 8.0171875 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Daylight |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | Uncalibrated |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Manual white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 24 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Rating (out of 5) | 0 |