About: http://webisa.webdatacommons.org/99691116

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	Denoted at 20 is a light source which produces coherent light, such as a laser, and denoted at 21 is a collimator lens for transforming the light from the light source 20 into parallel light.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au