@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix sdo: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . @prefix xsd: . rdf:type sdo:DefinedTerm ; sdo:description "The Magee Scientific AE1 Aethalometer determines concentration of light absorbing aerosol particles from measurements of light transmission through a sample. Air is filtered through a quartz fibre filter tape that traps particulate matter. Measurements are taken at user-specified time intervals ranging from one second to several minutes and the instrument outputs a voltage that is indicative of the amount of light absorbed by the sample."@en ; sdo:inDefinedTermSet ; sdo:name "Magee Scientific AE1 Aethalometer"@en ; sdo:termCode "SDN:L22::TOOL0333" .