About: http://webisa.webdatacommons.org/25211971

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	where L is the cavity length, n is the refractive index of the laser medium, nL is theoptical path, N is an integer and ?? denotes the wavelength.
http://www.w3.org/ns/prov#wasQuotedFrom	worldoflasers.com