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HarrisonH1
Page history last edited by GregReser 8 mos ago
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| Image ID : |
HarrisonH1 |
| View/Description : |
Oblique view with dials |
| Image Creator : |
National Maritime Museum |
| Image Date : |
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Image Source :
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National Maritime Museum |
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Notes :
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| Rights Owner : |
National Maritime Museum |
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URL to larger image :
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www.nmm.ac.uk/rog/D6783-3.jpg |
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Work ID :
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HarrisonH1 |
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Title :
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Marine Timekeeper
Harrison Number One
Harrison H1
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Creator/Agent :
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Harrison, John, 1693-1776 [LCNAF]
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Date (of work) :
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ca. 1735 |
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Location/Site :
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constructed: Barrow-on-Humber, Lincolnshire, England |
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GIS Coordinates :
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Location/Museum :
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National Maritime Museum, Greenwich, London, Ministry of Defence Art Collection
National Maritime Museum (Great Britain) [LCNAF]
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Other Identifier :
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NMM (ZAA0034) |
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Publisher :
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Description :
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State/Edition :
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Inscription :
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Work Type :
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Measuring devices (instruments) [AAT]
Timepieces [AAT]
Clocks [AAT]
Chronometers [AAT]
Prototypes (object genre) [AAT]
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Measurements :
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67.3 cm [HEIGHT] |
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Material :
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brass; bronze; steel; oak; lignum vitae |
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Technique :
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Mechanical engineering [AAT] |
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Style/Period/
Group/Movement :
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Cultural Context :
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British |
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Subject :
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Navigation [LCSH]
Time [LCSH]
Horology [LCSH]
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Relation :
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Language :
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Text Reference :
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http://www.nmm.ac.uk/collections/explore/object.cfm?ID=ZAA0034
en.wikipedia.org/wiki/John_Harrison
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Keywords :
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gears, dials, mechanical, competitions, form follows function, |
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Notes :
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Marine timekeeper, H1. This is the first experimental marine timekeeper made by John Harrison in Barrow-on-Humber between 1730 and 1735 as a first step towards solving the longitude problem and winning the great £20,000 prize offered by the British Government. Now known as 'H1', the timekeeper is unaffected by the motion of a ship owing to its two interconnected swinging balances. It compensates for changes in temperature and thanks to extensive anti-friction devices, runs without any lubrication. It was the first relatively successful marine timekeeper of any kind and was the toast of London when Harrison unveiled it in 1735. It is one of the great milestones in clock-making history. |
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HarrisonH1
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Comments (1)
GregReser said
at 10:09 am on Mar 30, 2009
For Technique I used "Mechanical engineering" which is an AAT Discipline term. Is there a better field for this? Subject perhaps?
I included several terms for work type. Is it good to use all of the AAT hierarchies or just the most specific?
I included "Prototypes (object genre)" as a work type because it is in the AAT Objects facet. Does that make sense?
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