<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="https://digilab.ptb.de/dkd/refType/vocab/">  <dc:title>Metrology Database</dc:title>  <dc:creator>German Calibration Service (DKD)</dc:creator>  <dc:contributor>Thomas Krah, Daniel Hutzschenreuter, Benjamin Gloger, Muhammed-Ali Demir, Moritz Jordan</dc:contributor>  <dc:publisher>Deutscher Kalibrierdienst (German Calibration Service)</dc:publisher>  <dc:rights></dc:rights>  <dc:subject>metrology, reference types, digital calibration certificate, certificate of conformity</dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>2023-06-19</dc:date>  <dct:modified>2026-04-10 06:58:36</dct:modified>  <dc:language>en-US</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="https://digilab.ptb.de/dkd/refType/vocab/skos/484"><skos:prefLabel xml:lang="en-US">TimeToHalf</skos:prefLabel> <skos:definition xml:lang="en">High current impulse time to half value
For an exponential impulse current, time interval between the virtual origin and the instant at which the current has taken to fall to 50% of its peak value. </skos:definition> <skos:definition xml:lang="de">Impulsstromhalbwertszeit
Für einen Hochstromimpuls das Zeitintervall zwischen dem Ursprung und dem Moment, in dem der Strom auf die Hälfte des Spitzenwerts abgefallen ist.  </skos:definition> <skos:scopeNote xml:lang="en">Unit: s </skos:scopeNote> <skos:scopeNote xml:lang="en">DSI Unit: \second </skos:scopeNote> <skos:scopeNote xml:lang="en">SI Unit: s </skos:scopeNote> <skos:historyNote xml:lang="en">2026-04-08 Created </skos:historyNote> <skos:note xml:lang="en"> </skos:note> <skos:example xml:lang="en"> </skos:example><skos:inScheme rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/480"/>  <dct:created>2026-04-08 06:54:07</dct:created>  </skos:Concept></rdf:RDF>