About: http://webisa.webdatacommons.org/309955090

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	The spherical lens embodiment of FIG. 12 can be made by partially embedding closely spaced spherical balls, made of glass, plastic or other relevant material, in a layer of, for example, white paste or paint.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk