About: http://webisa.webdatacommons.org/419544161

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	Because radioactive decay in stray uranium, thorium or other elements can produce photons, even impurities in the materials of the detector itself could generate false signals.
http://www.w3.org/ns/prov#wasQuotedFrom	nsf.gov