About: http://webisa.webdatacommons.org/83668115

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	As the cathode, there may be used metal with a low work function and of a thickness of about 500 angstroms or more, such as aluminum, magnesium, indium, silver or alloys of the individual metals.
http://www.w3.org/ns/prov#wasQuotedFrom	google.de