About: http://webisa.webdatacommons.org/362005133

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 this is the case, the opacity is principally a function of the light scattering effect which occurs because of the existence of the voids in the system.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es