About: http://webisa.webdatacommons.org/214648971

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	The optical pathlength of the cavity of the tunable laser is the sum of the products of index of refraction and thickness along the optical path for all elements, including air, within the cavity.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au