About: http://webisa.webdatacommons.org/57058728

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 modifiers, the salts of copper and iron used together are particularly suitable because they also lessen the effect which the temperature of iridization sometimes has on the resistance of the film.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com