About: http://webisa.webdatacommons.org/268902056

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	In general, the index of refraction of the gas in cavity 26 is a function of its density, with changes in the density of the gas in cavity 26 causing a corresponding change in such gas's index of refraction.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca