About: http://webisa.webdatacommons.org/319588167

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	where Lz is the length of the chamber, c is the velocity of sound in the fluid (equal to frequency f times wavelength ?? and temperature dependent), and n is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es