File:Semaphore Tower at Baitalkuli in Bankura district of West Bengal 16.jpg
![File:Semaphore Tower at Baitalkuli in Bankura district of West Bengal 16.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/Semaphore_Tower_at_Baitalkuli_in_Bankura_district_of_West_Bengal_16.jpg/800px-Semaphore_Tower_at_Baitalkuli_in_Bankura_district_of_West_Bengal_16.jpg?20221115120457)
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Summary
[edit]DescriptionSemaphore Tower at Baitalkuli in Bankura district of West Bengal 16.jpg |
English: 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. |
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Source | Own work |
Author | Amitabha Gupta |
Object location | 22° 58′ 29.61″ N, 87° 33′ 26.36″ E ![]() | View this and other nearby images on: OpenStreetMap | ![]() |
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This file was uploaded as part of Wiki Exploration Program, an initiative by West Bengal Wikimedians User Group.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:04, 15 November 2022 | ![]() | 6,000 × 4,000 (14.9 MB) | Amitabha Gupta (talk | contribs) | Uploaded own work with UploadWizard |
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Camera manufacturer | SONY |
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Camera model | ILCE-7M3 |
Exposure time | 1/400 sec (0.0025) |
F-number | f/6.3 |
ISO speed rating | 125 |
Date and time of data generation | 11:13, 4 September 2022 |
Lens focal length | 46 mm |
Orientation | Normal |
Horizontal resolution | 350 dpi |
Vertical resolution | 350 dpi |
Software used | Adobe Photoshop CS3 Windows |
File change date and time | 11:13, 4 September 2022 |
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Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.31 |
Date and time of digitizing | 11:13, 4 September 2022 |
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Image compression mode | 3 |
APEX brightness | 10.1421875 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
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 | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 46 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Supported Flashpix version | 1 |
Image width | 6,000 px |
Image height | 4,000 px |
Date metadata was last modified | 03:05, 14 November 2022 |
Rating (out of 5) | 0 |
IIM version | 17,386 |
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4 September 2022
image/jpeg
3e1f952ab1783a88080df7f56ade1737bd9b16ad
15,623,581 byte
4,000 pixel
6,000 pixel
22°58'29.615"N, 87°33'26.356"E
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- Supported by West Bengal Wikimedians User Group
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