About: http://webisa.webdatacommons.org/252434709

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	When used in this manner, the characteristic impedance is a special case of the specific acoustic impedance, and is the specific acoustic impedance for a plane progressive wave.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com