About: http://webisa.webdatacommons.org/157888042

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	FIGS. 50A and 50B are is a diagrams for explaining an optical element utilizing a laminar Fresnel zone plate;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au