About: http://webisa.webdatacommons.org/417402245

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 an optical context conjugate points are points on the optical axis of an optical system, such as a lens or mirror, so positioned that light emitted from either point will be focused at the other, e.g. object and image points.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com