About: http://webisa.webdatacommons.org/285097906

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	d, is a measure of how well the source is collimated, which is expressed by the size of the source (D
http://www.w3.org/ns/prov#wasQuotedFrom	opticsinfobase.org