About: http://webisa.webdatacommons.org/177209182

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	Since the concave mirror 24 has a light collecting function unlike a plane mirror, a lens such as an objective lens can be eliminated.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com