About: http://webisa.webdatacommons.org/115556624

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	It only works with metals of relatively high conductivity, such as copper or aluminum alloys, although it will work to a more limited extent with sheet steel....
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org