File:In the historic period, a canal was constructed as a power supply for the factory operations. A series of tail races were (b23f6213-1dd8-b71b-0b41-d4c3e5f1f04c).JPG
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Summary
[edit]English: Tail Races | |||||
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Photographer |
English: NPS Photo |
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Title |
English: Tail Races |
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Publisher |
English: U.S. National Park Service |
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Description |
English: The tail races vary from curved stone openings in the stone canal wall with keystones to simple openings. In the historic period, a canal was constructed as a power supply for the factory operations. A series of tail races were constructed from the canal leading to the Potomac River. Evidence uncovered during archeological investigation of the area indicates the first constructed trail race likely dates from 1799 to 1801. Other tail races were constructed in the 1840s with the expansion of the Armory.
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Depicted place |
English: Harpers Ferry National Historical Park |
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Date | Taken on 13 December 2016 | ||||
Accession number | |||||
Source |
English: NPGallery |
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Permission (Reusing this file) |
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NPS Unit Code InfoField | HAFE | ||||
Album(s) InfoField | English: United States Armory Grounds and Potomac Riverfront |
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 09:35, 14 May 2024 | 4,272 × 2,848 (5.54 MB) | BMacZeroBot (talk | contribs) | Batch upload (Commons:Batch uploading/NPGallery) |
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Metadata
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Image title | In the historic period, a canal was constructed as a power supply for the factory operations. A series of tail races were constructed from the canal leading to the Potomac River. Evidence uncovered during archeological investigation of the area indicates the first constructed trail race likely dates from 1799 to 1801. Other tail races were constructed in the 1840s with the expansion of the Armory. |
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Camera manufacturer | Canon |
Camera model | Canon EOS DIGITAL REBEL XSi |
Exposure time | 1/125 sec (0.008) |
F-number | f/3.5 |
ISO speed rating | 250 |
Date and time of data generation | 12:20, 13 December 2016 |
Lens focal length | 18 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
File change date and time | 12:20, 13 December 2016 |
Y and C positioning | Co-sited |
Exposure Program | Shutter priority |
Exif version | 2.21 |
Date and time of digitizing | 12:20, 13 December 2016 |
Meaning of each component |
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APEX shutter speed | 7 |
APEX aperture | 3.625 |
APEX exposure bias | 0 |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
DateTime subseconds | 52 |
DateTimeOriginal subseconds | 52 |
DateTimeDigitized subseconds | 52 |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 4,865.6036446469 |
Focal plane Y resolution | 4,876.7123287671 |
Focal plane resolution unit | inches |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Manual white balance |
Scene capture type | Standard |