About: http://webisa.webdatacommons.org/8184042

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 relatively thin layers 614 are formed from a material such as germanium, silicon or gallium arsenide and have a thickness that corresponds to one quarter wavelength optical thickness at the filters tuned wavelength.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com