<http://webisa.webdatacommons.org/prov/469710802>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/117468147> .
<http://webisa.webdatacommons.org/117468147>	<http://www.w3.org/ns/prov#value>	"The contact post 53 is made of a metal which is particularly rigid and acts, when electrical potential is applied across the element 48, to provide a high acoustic impedance so that the ultrasonic pulse is sent into the liquid." .
<http://webisa.webdatacommons.org/117468147>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/117468147>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com.au> .