About: http://webisa.webdatacommons.org/266910953

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 this connection, the refraction index of the glass matrix surrounding such crystals must corresponds as closely as possible to that of the crystals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com