About: http://webisa.webdatacommons.org/435617795

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	Embodiments are discussed which allow the source to be positioned such as to yield an imaging system based on either the critical angle effect or on frustrated total internal reflection.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com