About: http://webisa.webdatacommons.org/179747270

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	Also shown in FIG. 4 is a pair of mirrors 71 and 73 which allow for the stacked arrangement of the laser 14 and photo diode 16, providing the correct alignment of laser light to the single rotating polygonal mirror 17.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com