About: http://webisa.webdatacommons.org/398527696

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	As compared to all ordinary materials, including in this case such things as air and copper, the relative permeability of magnetic iron is on the order of 1000:1.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com