About: http://webisa.webdatacommons.org/78353497

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	A further advantage is achieved by using diaphragms and other components which have a flat black surface to eliminate secondary lines and other undesirable reflections and
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com