About: http://webisa.webdatacommons.org/369564129

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 radiation source, such as an LED or a laser diode, may be arranged on the printed circuit board or mounted in a holder on the imaging unit.
http://www.w3.org/ns/prov#wasQuotedFrom	faqs.org