About: http://webisa.webdatacommons.org/216451470

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The magnetic lines of flux travel largely through air which offers a much higher reluctance than does a magnetizable material such as iron or steel.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr