About: http://webisa.webdatacommons.org/138937099

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	As the reflector rotates with the rotating part, it reaches a position such that the reflection from it re-enters the angle sensing autocollimator at just such an angle as to be transmitted efficiently into the end of the sensing fiber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es