About: http://webisa.webdatacommons.org/171799163

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 thickness of a cavity satisfies the relation e=k??/2n where ?? is the resonant wave length, n is the refraction index of the medium between the mirrors and k is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com