About: http://webisa.webdatacommons.org/300968421

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	FIG. 3A is a cross-sectional side view of a lens assembly indirectly supported by a centered universal pivot, that is one optical element of an adjustable Fresnel lens solar concentrator.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com