About: http://webisa.webdatacommons.org/37116658

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	As discussed above, the placido projector 112 is made of a translucent material, such as plastic, and has a plurality of concentric mires 130 painted on the inner surface 126 of the cavity 124.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com