About: http://webisa.webdatacommons.org/152073010

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	Atomic clocks are accurate, but the speed of light in other than a vacuum must call for some modelling presumptions.
http://www.w3.org/ns/prov#wasQuotedFrom	climateaudit.org