["item",{"itemId":"19","public":"1","featured":"1","xmlns:xsi":"http://www.w3.org/2001/XMLSchema-instance","xsi:schemaLocation":"http://omeka.org/schemas/omeka-xml/v5 http://omeka.org/schemas/omeka-xml/v5/omeka-xml-5-0.xsd","uri":"https://learning.hku.hk/ccch9051/group-1/items/show/19?output=omeka-json","accessDate":"2026-06-09T11:03:12+08:00"},["fileContainer",["file",{"fileId":"17"},["src","https://learning.hku.hk/ccch9051/group-1/files/original/61d8b8bd6eb3850bf77208042b3067ef.jpeg"],["authentication","cf24ee72ac10d5111398ffe5be341b49"]]],["collection",{"collectionId":"8"},["elementSetContainer",["elementSet",{"elementSetId":"1"},["name","Dublin Core"],["description","The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/."],["elementContainer",["element",{"elementId":"50"},["name","Title"],["description","A name given to the resource"],["elementTextContainer",["elementText",{"elementTextId":"141"},["text","Tools"]]]]]]]],["itemType",{"itemTypeId":"15"},["name","Physical Object"],["description","An inanimate, three-dimensional object or substance. Note that digital representations of, or surrogates for, these objects should use Moving Image, Still Image, Text or one of the other types."]],["elementSetContainer",["elementSet",{"elementSetId":"1"},["name","Dublin Core"],["description","The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/."],["elementContainer",["element",{"elementId":"50"},["name","Title"],["description","A name given to the resource"],["elementTextContainer",["elementText",{"elementTextId":"92"},["text","Seismometer"]]]],["element",{"elementId":"49"},["name","Subject"],["description","The topic of the resource"],["elementTextContainer",["elementText",{"elementTextId":"93"},["text","Machines; Natural hazard prevention"]]]],["element",{"elementId":"41"},["name","Description"],["description","An account of the resource"],["elementTextContainer",["elementText",{"elementTextId":"94"},["text","The seismometer was made of fine copper, and looked like a big cup with a lid. The instrument was cast with eight dragons on the surface (whose heads pointed in eight directions), and each dragon had a copper ball in the mouth. On the ground below the dragons there were eight copper toads raising their heads and opening their mouths opposite the dragons' mouths. When an earthquake occurred, the dragon facing that direction would open its mouth, and the ball would fall into the toad's mouth, automatically indicating the direction of the earthquake."]]]],["element",{"elementId":"39"},["name","Creator"],["description","An entity primarily responsible for making the resource"],["elementTextContainer",["elementText",{"elementTextId":"95"},["text","Zhang Heng"]]]],["element",{"elementId":"40"},["name","Date"],["description","A point or period of time associated with an event in the lifecycle of the resource"],["elementTextContainer",["elementText",{"elementTextId":"155"},["text","Han Dynasty"]]]],["element",{"elementId":"46"},["name","Relation"],["description","A related resource"],["elementTextContainer",["elementText",{"elementTextId":"156"},["text","Armillary sphere"]]]],["element",{"elementId":"42"},["name","Format"],["description","The file format, physical medium, or dimensions of the resource"],["elementTextContainer",["elementText",{"elementTextId":"157"},["text","Round-shaped with dragons and toads to represent directions"]]]],["element",{"elementId":"51"},["name","Type"],["description","The nature or genre of the resource"],["elementTextContainer",["elementText",{"elementTextId":"158"},["text","Physical object"]]]],["element",{"elementId":"38"},["name","Coverage"],["description","The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant"],["elementTextContainer",["elementText",{"elementTextId":"159"},["text","Chinese geography"]]]]]]]]