About: http://webisa.webdatacommons.org/360999980

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	I can not think of any situation other than building a lens or a pinhole camera in which it is practically useful to think about the diameter or area of the aperture pupil.
http://www.w3.org/ns/prov#wasQuotedFrom	fredmiranda.com