About: http://webisa.webdatacommons.org/16743018

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 practice this is achieved by creating a screen ??? out of materials such as silver halide films or photopolymers ??? that provides the viewer with a slightly different perspective, depending on the observation angle.
http://www.w3.org/ns/prov#wasQuotedFrom	physicsworld.com