About: http://webisa.webdatacommons.org/136183188

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	Because the polarization state of an incident light wave can vary with time, determination of the polarization state as time proceeds is a challenge, especially if the determination is to be made with only a small time delay.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com