About: http://webisa.webdatacommons.org/147428084

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	These are devices which use an effect found in some materials e.g. nickel which reduce in size when placed in a magnetic field and return to normal dimensions when the field is removed (magnetostriction).
http://www.w3.org/ns/prov#wasQuotedFrom	sonochemistry.info