About: http://webisa.webdatacommons.org/52049003

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 angle determined in such manner so as to observe the process enables to perceive gradual changes of transparency occurring on the surfaces of filters.
http://www.w3.org/ns/prov#wasQuotedFrom	federicodiaz.net