About: http://webisa.webdatacommons.org/195495194

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 transducer 21 should ideally be powered by a battery so that no cords or other devices are needed between the observer 27 and the display or other power source.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com