File:Post-medieval iron cannon ball (FindID 143585).jpg
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Captions
Captions
Summary
[edit]Post-medieval iron cannon ball | |||
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Photographer |
Royal Institution of Cornwall, Anna Tyacke, 2006-09-24 22:47:57 |
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Title |
Post-medieval iron cannon ball |
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Description |
English: Cast iron round shot or cannon ball, partly corroded so that there is little sign of a mid-rib or casting mark. The cannon ball weighs 480g which is about 1lb, and is almost 50 mm in diameter, or 2 inches, which was common in the 18th century.
A cannon is any large tubular firearm designed to fire a heavy projectile over a considerable distance. Although a variety of such guns are commonly referred to as ‘cannon’, the term specifically refers to a gun designed to fire a 42lb shot as opposed to a Demi-cannon (32lb), Culverin (18lb) or Demi-culverin (9lb). This cannon ball weighs only 1lb and may have been fired from a naval swivel gun with a 2-3 inch bore. As this shot was found near the sea, this last option is the most likely. Read (1988) illustrates a 2 lb cannon ball on page 205, No.1436, which is dated to the 18th century. |
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Depicted place | (County of findspot) Cornwall | ||
Date |
between 1700 and 1800 date QS:P571,+1500-00-00T00:00:00Z/6,P1319,+1700-00-00T00:00:00Z/9,P1326,+1800-00-00T00:00:00Z/9 |
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Accession number |
FindID: 143585 Old ref: CORN-6AD6C3 Filename: find 018.jpg |
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Credit line |
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Source |
https://finds.org.uk/database/ajax/download/id/114532 Catalog: https://finds.org.uk/database/images/image/id/114532 Artefact: https://finds.org.uk/database/artefacts/record/id/143585 |
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Permission (Reusing this file) |
Attribution-ShareAlike License |
Licensing
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:28, 22 January 2017 | ![]() | 1,280 × 960 (362 KB) | Fæ (talk | contribs) | Portable Antiquities Scheme, CORN, FindID: 143585, post medieval, page 95, batch count 1652 |
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Metadata
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 | NIKON |
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Camera model | E4500 |
Exposure time | 2/75 sec (0.026666666666667) |
F-number | f/3.4 |
ISO speed rating | 100 |
Date and time of data generation | 14:39, 22 September 2006 |
Lens focal length | 15.8 mm |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E4500v1.2 |
File change date and time | 14:39, 22 September 2006 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 14:39, 22 September 2006 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 2.8 APEX (f/2.64) |
Metering mode | Center weighted average |
Light source | Tungsten (incandescent light) |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |