<?xml version="1.0" encoding="utf-8"?> <rdf:RDF xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:odm2="http://vocabulary.odm2.org/ODM2/ODM2Terms/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" > <rdf:Description rdf:about="http://vocabulary.odm2.org/unitstype"> <rdf:type rdf:resource="http://www.w3.org/2004/02/skos/core#ConceptScheme"/> <dc:title>ODM2 Units Type Controlled Vocabulary</dc:title> <dc:creator>ODM2 Working Group</dc:creator> <dc:description>A vocabulary for describing the type of the Unit or the more general quantity that the Unit represents.</dc:description> </rdf:Description> <rdf:Description rdf:about="http://vocabulary.odm2.org/unitstype/electricalPermittivity"> <rdf:type rdf:resource="http://www.w3.org/2004/02/skos/core#Concept"/> <skos:inScheme rdf:resource="http://vocabulary.odm2.org/unitstype"/> <skos:prefLabel>Electrical permittivity</skos:prefLabel> <skos:definition>In electromagnetism, absolute permittivity is the measure of the resistance that is encountered when forming an electric field in a medium. In other words, permittivity is a measure of how an electric field affects, and is affected by, a dielectric medium. The permittivity of a medium describes how much electric field (more correctly, flux) is 'generated' per unit charge in that medium. More electric flux exists in a medium with a low permittivity (per unit charge) because of polarization effects. Permittivity is directly related to electric susceptibility, which is a measure of how easily a dielectric polarizes in response to an electric field. Thus, permittivity relates to a material's ability to resist an electric field and "permit" is a misnomer. In SI units, permittivity ? is measured in farads per meter (F/m)</skos:definition> <odm2:category>Electricity and Magnetism</odm2:category> <skos:historyNote>QUDT</skos:historyNote> <skos:exactMatch>http://qudt.org/vocab/quantity#Permittivity</skos:exactMatch> </rdf:Description> </rdf:RDF>