About: http://webisa.webdatacommons.org/240162379

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	Each of the components, including the mirrors, anode, and cathode, are sealed to the block to form a gas tight seal by any one of a variety of techniques.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com