About: http://webisa.webdatacommons.org/402102409

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 P is a strain optical coefficient, n is a refractive index, rho is a density, v is an acoustic velocity, and p is an energy of acoustic wave.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com