About: http://webisa.webdatacommons.org/15438230

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 low frequency of the AC magnetic field emitted by a respective generator is capable of penetrating thin metals such as foils, where radio signals are totally blocked.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es